{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T15:15:48Z","timestamp":1784301348799,"version":"3.55.0"},"reference-count":547,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","license":[{"start":{"date-parts":[[2021,1,1]],"date-time":"2021-01-01T00:00:00Z","timestamp":1609459200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"},{"start":{"date-parts":[[2021,1,1]],"date-time":"2021-01-01T00:00:00Z","timestamp":1609459200000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Access"],"published-print":{"date-parts":[[2021]]},"DOI":"10.1109\/access.2021.3124812","type":"journal-article","created":{"date-parts":[[2021,11,2]],"date-time":"2021-11-02T21:28:51Z","timestamp":1635888531000},"page":"148191-148243","source":"Crossref","is-referenced-by-count":527,"title":["6G Wireless Communications Networks: A Comprehensive Survey"],"prefix":"10.1109","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7937-3093","authenticated-orcid":false,"given":"Muntadher","family":"Alsabah","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5686-2759","authenticated-orcid":false,"given":"Marwah Abdulrazzaq","family":"Naser","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4121-0843","authenticated-orcid":false,"given":"Basheera M.","family":"Mahmmod","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6439-0082","authenticated-orcid":false,"given":"Sadiq H.","family":"Abdulhussain","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5584-5815","authenticated-orcid":false,"given":"Mohammad R.","family":"Eissa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4594-6006","authenticated-orcid":false,"given":"Ahmed","family":"Al-Baidhani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0343-4862","authenticated-orcid":false,"given":"Nor K.","family":"Noordin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4796-0581","authenticated-orcid":false,"given":"Sadiq M.","family":"Sait","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3965-5018","authenticated-orcid":false,"given":"Khaled A.","family":"Al-Utaibi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1880-5643","authenticated-orcid":false,"given":"Fazirul","family":"Hashim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"263","reference":[{"key":"ref275","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2016.7509396"},{"key":"ref274","doi-asserted-by":"publisher","DOI":"10.1109\/WCNC.2017.7925924"},{"key":"ref277","author":"wen","year":"2013","journal-title":"5G A Technology Vision"},{"key":"ref276","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2017.2737528"},{"key":"ref271","doi-asserted-by":"publisher","DOI":"10.1109\/VETECS.2009.5073571"},{"key":"ref270","doi-asserted-by":"publisher","DOI":"10.1109\/SPAWC.2015.7227001"},{"key":"ref273","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2017.2766698"},{"key":"ref170","doi-asserted-by":"publisher","DOI":"10.1016\/j.nancom.2016.02.001"},{"key":"ref272","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2014.2345566"},{"key":"ref172","doi-asserted-by":"publisher","DOI":"10.1016\/j.nancom.2020.100284"},{"key":"ref171","doi-asserted-by":"publisher","DOI":"10.1109\/ICASSP.2019.8683394"},{"key":"ref174","article-title":"Wireless data center networks: Advances, challenges, and opportunities","author":"celik","year":"2018","journal-title":"arXiv 1811 11717"},{"key":"ref173","doi-asserted-by":"publisher","DOI":"10.1109\/OJCOMS.2020.3010270"},{"key":"ref176","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2017.2712878"},{"key":"ref175","doi-asserted-by":"publisher","DOI":"10.1016\/j.phycom.2019.04.014"},{"key":"ref178","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2018.2792419"},{"key":"ref177","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2011.6011734"},{"key":"ref168","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2016.1600306CM"},{"key":"ref169","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2929455"},{"key":"ref267","doi-asserted-by":"publisher","DOI":"10.1109\/TBC.2008.915770"},{"key":"ref268","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2011.940267"},{"key":"ref269","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOMW.2013.6824990"},{"key":"ref288","doi-asserted-by":"publisher","DOI":"10.1186\/s13638-018-1104-7"},{"key":"ref287","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2020.3041598"},{"key":"ref286","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2015.7263349"},{"key":"ref285","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2018.2835558"},{"key":"ref181","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.1996.533654"},{"key":"ref284","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2017.2768666"},{"key":"ref180","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-30201-0"},{"key":"ref283","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2017.2725519"},{"key":"ref282","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2016.2646183"},{"key":"ref281","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2016.2621116"},{"key":"ref185","doi-asserted-by":"publisher","DOI":"10.1364\/OL.28.000129"},{"key":"ref280","doi-asserted-by":"publisher","DOI":"10.1587\/transcom.E98.B.403"},{"key":"ref184","doi-asserted-by":"publisher","DOI":"10.1002\/mop.11337"},{"key":"ref183","doi-asserted-by":"publisher","DOI":"10.1109\/JEDS.2017.2695491"},{"key":"ref182","doi-asserted-by":"publisher","DOI":"10.1049\/ip-opt:19960881"},{"key":"ref189","doi-asserted-by":"publisher","DOI":"10.1109\/CONTEL.2003.176939"},{"key":"ref188","doi-asserted-by":"publisher","DOI":"10.1109\/JSTSP.2019.2921527"},{"key":"ref187","doi-asserted-by":"publisher","DOI":"10.1364\/JOCN.5.001001"},{"key":"ref186","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2012.2220754"},{"key":"ref179","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9781107278929"},{"key":"ref278","author":"docomo","year":"2014","journal-title":"5G Radio Access Requirements Concepts and Technologies"},{"key":"ref279","doi-asserted-by":"publisher","DOI":"10.1109\/VTCSpring.2013.6692652"},{"key":"ref293","doi-asserted-by":"publisher","DOI":"10.1109\/IWCMC.2012.6314235"},{"key":"ref292","doi-asserted-by":"publisher","DOI":"10.1109\/VTCFall.2014.6966170"},{"key":"ref295","doi-asserted-by":"publisher","DOI":"10.1109\/ISWCS.2014.6933459"},{"key":"ref294","doi-asserted-by":"publisher","DOI":"10.1109\/ICFCN.2012.6206872"},{"key":"ref297","doi-asserted-by":"publisher","DOI":"10.1109\/VTCSpring.2016.7504361"},{"key":"ref296","doi-asserted-by":"publisher","DOI":"10.1109\/ICCS.2014.7024798"},{"key":"ref299","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2016.2596438"},{"key":"ref298","doi-asserted-by":"publisher","DOI":"10.1098\/rsta.2014.0432"},{"key":"ref154","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2947819"},{"key":"ref153","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2020.3031657"},{"key":"ref156","doi-asserted-by":"publisher","DOI":"10.1109\/ICUMT.2016.7765354"},{"key":"ref155","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.3010896"},{"key":"ref150","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2947928"},{"key":"ref291","doi-asserted-by":"publisher","DOI":"10.1109\/PIMRC.2013.6666156"},{"key":"ref152","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2947938"},{"key":"ref290","year":"2015","journal-title":"New SI Proposal Study on Downlink Multiuser Superposition Transmissions for LTE"},{"key":"ref151","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2947856"},{"key":"ref146","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2017.2673248"},{"key":"ref147","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2947922"},{"key":"ref148","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2947929"},{"key":"ref149","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2947924"},{"key":"ref289","year":"2014","journal-title":"Study on Network-Assisted Interference Cancellation and Suppression (NAICS) for LTE"},{"key":"ref167","first-page":"1","article-title":"Towards a new internet for the year 2030 and beyond","author":"li","year":"2018","journal-title":"Proc 3rd Annu ITU IMT-2020\/5G Workshop Demo Day"},{"key":"ref166","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.2019.1800418"},{"key":"ref165","doi-asserted-by":"publisher","DOI":"10.1016\/j.jii.2020.100158"},{"key":"ref164","doi-asserted-by":"publisher","DOI":"10.1109\/OJCOMS.2019.2953633"},{"key":"ref163","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2018.1700924"},{"key":"ref162","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2018.1700928"},{"key":"ref161","doi-asserted-by":"publisher","DOI":"10.1016\/j.phycom.2014.01.006"},{"key":"ref160","doi-asserted-by":"publisher","DOI":"10.1109\/TTHZ.2011.2159552"},{"key":"ref159","article-title":"A prospective look: Key enabling technologies, applications and open research topics in 6G networks","author":"bariah","year":"2020","journal-title":"arXiv 2004 06049"},{"key":"ref157","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOM.2018.8647921"},{"key":"ref158","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2019.2921522"},{"key":"ref197","doi-asserted-by":"crossref","first-page":"56","DOI":"10.1109\/JPROC.2013.2287851","article-title":"Spatial modulation for generalized MIMO: Challenges, opportunities, and implementation","volume":"102","author":"di renzo","year":"2014","journal-title":"Proc IEEE"},{"key":"ref198","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2011.2155622"},{"key":"ref199","first-page":"1","article-title":"803 Mbit\/s visible light WDM link based on DMT modulation of a single RGB LED luminary","author":"vu?i?","year":"2011","journal-title":"Proc Conf Optical Fiber Commun \/Nat Fiber Opt Eng Conf"},{"key":"ref193","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2015.2418285"},{"key":"ref194","article-title":"6G white paper: Research challenges for trust, security and privacy","author":"ylianttila","year":"2020","journal-title":"arXiv 2004 11665"},{"key":"ref195","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.001.1900428"},{"key":"ref196","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2015.2476474"},{"key":"ref190","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2009.2024169"},{"key":"ref191","doi-asserted-by":"publisher","DOI":"10.1109\/SPAWC.2018.8445766"},{"key":"ref192","doi-asserted-by":"publisher","DOI":"10.1109\/JPHOT.2017.2671031"},{"key":"ref526","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2020.3023550"},{"key":"ref527","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-019-09103-2"},{"key":"ref524","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2019.2900035"},{"key":"ref525","doi-asserted-by":"publisher","DOI":"10.1016\/j.cmpb.2021.106357"},{"key":"ref522","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2016.2615643"},{"key":"ref523","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2019.2916583"},{"key":"ref520","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2014.2320099"},{"key":"ref521","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2016.1600317WC"},{"key":"ref528","doi-asserted-by":"publisher","DOI":"10.1109\/SPAWC.2019.8815428"},{"key":"ref529","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2019.2921627"},{"key":"ref530","doi-asserted-by":"publisher","DOI":"10.3390\/s21061999"},{"key":"ref535","doi-asserted-by":"publisher","DOI":"10.1109\/SPAWC.2017.8227766"},{"key":"ref536","doi-asserted-by":"publisher","DOI":"10.1109\/SPLIM.2016.7528397"},{"key":"ref537","doi-asserted-by":"publisher","DOI":"10.1109\/CISS.2017.7926071"},{"key":"ref538","doi-asserted-by":"publisher","DOI":"10.1109\/ALLERTON.2016.7852251"},{"key":"ref531","article-title":"Speech enhancement algorithm based on a hybrid estimator","volume":"1090","author":"mahmmod","year":"2021","journal-title":"Proc IOP Conf Mater Sci Eng"},{"key":"ref532","doi-asserted-by":"publisher","DOI":"10.3390\/e23091162"},{"key":"ref533","doi-asserted-by":"publisher","DOI":"10.1109\/TCCN.2017.2758370"},{"key":"ref534","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2017.7997434"},{"key":"ref539","doi-asserted-by":"publisher","DOI":"10.1109\/OJCOMS.2019.2959913"},{"key":"ref200","doi-asserted-by":"publisher","DOI":"10.1364\/OFC.2013.OTh1G.4"},{"key":"ref541","first-page":"213","article-title":"Convolutional radio modulation recognition networks","author":"o\u2019shea","year":"2016","journal-title":"Proc Int Conf Eng Appl Neural Netw"},{"key":"ref540","doi-asserted-by":"publisher","DOI":"10.1109\/LWC.2017.2757490"},{"key":"ref101","doi-asserted-by":"publisher","DOI":"10.1186\/s13638-019-1438-9"},{"key":"ref100","article-title":"Reconfigurable intelligent surfaces and metamaterials: The potential of wave propagation control for 6G wireless communications","author":"alexandropoulos","year":"2020","journal-title":"arXiv 2006 11136"},{"key":"ref500","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2016.2584538"},{"key":"ref501","doi-asserted-by":"publisher","DOI":"10.1145\/2757384.2757397"},{"key":"ref209","doi-asserted-by":"publisher","DOI":"10.1016\/j.revip.2017.10.001"},{"key":"ref504","first-page":"1","article-title":"Mobile edge computing–A key technology towards 5G","volume":"11","author":"hu","year":"2015","journal-title":"ETSI White Paper"},{"key":"ref409","doi-asserted-by":"publisher","DOI":"10.1109\/LWC.2017.2734893"},{"key":"ref505","first-page":"1","article-title":"On using a sdn-based control plane in 5G mobile networks","author":"mahmoodi","year":"2014","journal-title":"Proc 32nd Meeting Wireless World Res Forum"},{"key":"ref502","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2015.2477041"},{"key":"ref407","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2018.2846272"},{"key":"ref503","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2014.2371999"},{"key":"ref408","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2018.2872715"},{"key":"ref508","doi-asserted-by":"publisher","DOI":"10.24996\/ijs.2020.61.6.32"},{"key":"ref203","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2019.2906225"},{"key":"ref405","doi-asserted-by":"publisher","DOI":"10.1109\/GlobalSIP.2018.8646330"},{"key":"ref509","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2019.2941458"},{"key":"ref204","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijleo.2019.163176"},{"key":"ref406","doi-asserted-by":"publisher","DOI":"10.1109\/ACSSC.2016.7869024"},{"key":"ref506","doi-asserted-by":"publisher","DOI":"10.1145\/2980137.2980139"},{"key":"ref201","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2012.6163585"},{"key":"ref403","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2016.2548658"},{"key":"ref507","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.2990292"},{"key":"ref202","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2011.5751298"},{"key":"ref404","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2019.2941478"},{"key":"ref207","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2015.2510021"},{"key":"ref401","article-title":"6G white paper on validation and trials for verticals towards 2030’s","author":"pouttu","year":"2020"},{"key":"ref208","doi-asserted-by":"publisher","DOI":"10.1109\/JPHOT.2016.2637564"},{"key":"ref402","doi-asserted-by":"publisher","DOI":"10.1109\/ICCW.2019.8756714"},{"key":"ref205","doi-asserted-by":"publisher","DOI":"10.3390\/s19051153"},{"key":"ref206","doi-asserted-by":"publisher","DOI":"10.1109\/LPT.2013.2297621"},{"key":"ref400","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2010.2049996"},{"key":"ref211","doi-asserted-by":"publisher","DOI":"10.1117\/2.1201304.004773"},{"key":"ref210","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2012.2236642"},{"key":"ref510","article-title":"Edge intelligence for autonomous driving in 6G wireless system: Design challenges and solutions","author":"yang","year":"2020","journal-title":"arXiv 2012 06992"},{"key":"ref511","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.001.1900665"},{"key":"ref512","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2020.3020068"},{"key":"ref513","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2015.7295483"},{"key":"ref418","doi-asserted-by":"publisher","DOI":"10.1016\/j.comnet.2018.03.012"},{"key":"ref514","doi-asserted-by":"publisher","DOI":"10.1109\/MCOMSTD.2019.1900005"},{"key":"ref419","doi-asserted-by":"publisher","DOI":"10.1109\/TCSS.2019.2919667"},{"key":"ref515","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2019.2926625"},{"key":"ref516","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2019.2916177"},{"key":"ref517","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2019.2919236"},{"key":"ref414","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2019.2935434"},{"key":"ref212","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2015.2511015"},{"key":"ref518","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2019.2920162"},{"key":"ref415","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2020.2975354"},{"key":"ref213","doi-asserted-by":"publisher","DOI":"10.1364\/JOCN.12.00A190"},{"key":"ref519","doi-asserted-by":"publisher","DOI":"10.1109\/TCCN.2018.2881442"},{"key":"ref416","year":"2017","journal-title":"study on Non-Orthogonal Multiple Access (NOMA) for NR Release 15"},{"key":"ref214","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2013.6655152"},{"key":"ref417","doi-asserted-by":"publisher","DOI":"10.1080\/23270012.2018.1516523"},{"key":"ref215","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2017.1500672CM"},{"key":"ref410","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2019.8762051"},{"key":"ref216","author":"haas","year":"2015","journal-title":"Wireless Data Fromevery Light Bulb"},{"key":"ref411","doi-asserted-by":"publisher","DOI":"10.1109\/ICCT46805.2019.8947237"},{"key":"ref217","doi-asserted-by":"publisher","DOI":"10.1201\/9781315151724"},{"key":"ref412","doi-asserted-by":"publisher","DOI":"10.1109\/LCOMM.2020.3041899"},{"key":"ref218","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2020.2966855"},{"key":"ref413","doi-asserted-by":"publisher","DOI":"10.1109\/ACSSC.2018.8645336"},{"key":"ref219","doi-asserted-by":"publisher","DOI":"10.1109\/CNSR.2011.38"},{"key":"ref420","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2018.2882385"},{"key":"ref220","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2016.2603518"},{"key":"ref222","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2006.885252"},{"key":"ref221","doi-asserted-by":"publisher","DOI":"10.1109\/JPHOT.2015.2506172"},{"key":"ref229","author":"fares","year":"2010","journal-title":"Mobile and Wireless Communications Network Layer and Circuit Level Design"},{"key":"ref228","doi-asserted-by":"publisher","DOI":"10.1109\/MMM.2009.932832"},{"key":"ref227","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2005.1495057"},{"key":"ref226","doi-asserted-by":"publisher","DOI":"10.1109\/MILCOM.2004.1493303"},{"key":"ref225","doi-asserted-by":"publisher","DOI":"10.1117\/12.604597"},{"key":"ref224","doi-asserted-by":"publisher","DOI":"10.1007\/s10776-006-0042-1"},{"key":"ref223","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2014.2329501"},{"key":"ref127","year":"2012"},{"key":"ref126","doi-asserted-by":"publisher","DOI":"10.1109\/JSTSP.2016.2523924"},{"key":"ref125","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2014.2328111"},{"key":"ref124","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2014.2299397"},{"key":"ref129","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1109\/MCOM.2014.6894455","article-title":"Coverage and capacity of millimeter-wave cellular networks","volume":"52","author":"bai","year":"2014","journal-title":"IEEE Commun Mag"},{"key":"ref128","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2014.6736746"},{"key":"ref130","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2019.2947997"},{"key":"ref133","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2015.2435357"},{"key":"ref134","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2014.6736750"},{"key":"ref131","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2016.1600071CM"},{"key":"ref132","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.2982068"},{"key":"ref232","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2009.071318"},{"key":"ref233","doi-asserted-by":"publisher","DOI":"10.4304\/jcm.4.8.524-532"},{"key":"ref230","doi-asserted-by":"publisher","DOI":"10.1364\/AO.22.003353"},{"key":"ref231","doi-asserted-by":"publisher","DOI":"10.1016\/j.optcom.2012.08.055"},{"key":"ref239","doi-asserted-by":"publisher","DOI":"10.3390\/rs12060986"},{"key":"ref238","first-page":"138","article-title":"UAV-based laser scanning to meet special challenges in lidar surveying","author":"amon","year":"2015","journal-title":"Proc Geomatics Indaba"},{"key":"ref235","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2011.121410.100032"},{"key":"ref234","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2012.061412.100460"},{"key":"ref237","doi-asserted-by":"publisher","DOI":"10.1109\/MCE.2016.2556878"},{"key":"ref236","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2019.2921398"},{"key":"ref136","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2015.7054714"},{"key":"ref135","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2013.6472194"},{"key":"ref138","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2014.011714.130846"},{"key":"ref137","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2018.2819645"},{"key":"ref139","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2016.2532458"},{"key":"ref140","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2018.1800140"},{"key":"ref141","doi-asserted-by":"publisher","DOI":"10.1109\/JSTSP.2014.2334278"},{"key":"ref142","doi-asserted-by":"publisher","DOI":"10.1109\/VTCFall.2016.7880935"},{"key":"ref143","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2017.2725878"},{"key":"ref2","year":"2020","journal-title":"Cisco Annual Internet Report (2018–2023)"},{"key":"ref144","doi-asserted-by":"publisher","DOI":"10.1109\/ICCNC.2017.7876265"},{"key":"ref1","year":"2015","journal-title":"IMT Traffic Estimates for the Years 2020 to 2030"},{"key":"ref145","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2017.2699059"},{"key":"ref241","doi-asserted-by":"publisher","DOI":"10.1109\/6GSUMMIT49458.2020.9083914"},{"key":"ref242","doi-asserted-by":"publisher","DOI":"10.1049\/iet-opt.2014.0151"},{"key":"ref243","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2004.1312630"},{"key":"ref244","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2017.2681110"},{"key":"ref240","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2020.2973615"},{"key":"ref248","first-page":"40","article-title":"Data transfer technology to enable communication between displays and smart devices","volume":"50","author":"kuraki","year":"2014","journal-title":"FUJITSU Sci Tech J"},{"key":"ref247","author":"iizuka","year":"2014","journal-title":"OCC Proposal of Scope of Standardization and Applications"},{"key":"ref246","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOMW.2012.6477759"},{"key":"ref245","doi-asserted-by":"publisher","DOI":"10.1109\/WOCC.2013.6676454"},{"key":"ref249","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2018.2868995"},{"key":"ref109","doi-asserted-by":"publisher","DOI":"10.1109\/LCOMM.2020.2974196"},{"key":"ref108","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2020.3024621"},{"key":"ref107","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2020.3011308"},{"key":"ref106","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2020.2990766"},{"key":"ref105","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2017.2682318"},{"key":"ref104","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2020.3007035"},{"key":"ref103","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2020.3000807"},{"key":"ref102","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2020.3000802"},{"key":"ref111","article-title":"Resource allocation for multi-cell IRS-aided NOMA networks","author":"ni","year":"2020","journal-title":"arXiv 2006 11811"},{"key":"ref112","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.2000061"},{"key":"ref110","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2020.3006915"},{"key":"ref250","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2014.6815890"},{"key":"ref251","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2015.7263346"},{"key":"ref254","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2015.7105647"},{"key":"ref255","doi-asserted-by":"publisher","DOI":"10.1109\/SPAWC.2016.7536809"},{"key":"ref252","doi-asserted-by":"publisher","DOI":"10.1145\/2486001.2486033"},{"key":"ref253","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2014.2330193"},{"key":"ref257","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2011.071411.102266"},{"key":"ref256","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2017.1600264"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2014.6736752"},{"key":"ref259","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2014.6736751"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2019.2919279"},{"key":"ref258","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2015.7105651"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2019.2909490"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2019.1900271"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1109\/OJVT.2020.2980003"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.1900323"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2019.2921244"},{"key":"ref118","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2020.3000826"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.1900333"},{"key":"ref117","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.1900534"},{"key":"ref18","article-title":"From 5G to 6G: Has the time for modern random access come?","author":"clazzer","year":"2019","journal-title":"arXiv 1903 03063"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1007\/978-981-15-9735-0_1"},{"key":"ref119","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2019.2921208"},{"key":"ref114","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2018.2877210"},{"key":"ref113","doi-asserted-by":"publisher","DOI":"10.1109\/LWC.2020.2966705"},{"key":"ref116","article-title":"Reconfigurable intelligent surfaces for 6G systems: Principles, applications, and research directions","author":"pan","year":"2020","journal-title":"arXiv 2011 04300"},{"key":"ref115","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2020.3004598"},{"key":"ref120","doi-asserted-by":"publisher","DOI":"10.1109\/6GSUMMIT49458.2020.9083807"},{"key":"ref121","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2017.2719924"},{"key":"ref122","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2011.5783993"},{"key":"ref123","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2013.2260813"},{"key":"ref260","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2017.2692307"},{"key":"ref261","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2017.2705041"},{"key":"ref262","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2017.2731420"},{"key":"ref263","article-title":"Multiuser full-duplex two-way communications via intelligent reflecting surface","author":"peng","year":"2020","journal-title":"arXiv 2006 05147"},{"key":"ref264","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2005.1421929"},{"key":"ref265","author":"dahlman","year":"2013","journal-title":"4G LTE\/LTE-Advanced for Mobile Broadband"},{"key":"ref266","author":"nee","year":"2000","journal-title":"OFDM for Wireless Multimedia Communications"},{"key":"ref365","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOM.2017.8254715"},{"key":"ref364","doi-asserted-by":"publisher","DOI":"10.1109\/6GSUMMIT49458.2020.9083880"},{"key":"ref363","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2020.3028247"},{"key":"ref362","article-title":"Enabling technologies for 6g future wireless communications: Opportunities and challenges","author":"elmeadawy","year":"2020","journal-title":"arXiv 2002 06068"},{"key":"ref361","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2018.2890152"},{"key":"ref360","first-page":"1","article-title":"Integrating LEO satellite and UAV relaying via reinforcement learning for non-terrestrial networks","author":"lee","year":"2020","journal-title":"Proc IEEE Global Commun Conf (GLOBECOM)"},{"key":"ref498","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2017.1600387"},{"key":"ref39","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.001.1900411"},{"key":"ref499","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2018.1700906"},{"key":"ref38","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.1900488"},{"key":"ref33","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2019.2952892"},{"key":"ref32","doi-asserted-by":"publisher","DOI":"10.1109\/LWC.2019.2932435"},{"key":"ref31","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.2980285"},{"key":"ref359","doi-asserted-by":"publisher","DOI":"10.1109\/5GWF49715.2020.9221119"},{"key":"ref30","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.011.1900630"},{"key":"ref37","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.001.1900228"},{"key":"ref357","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.011.2000493"},{"key":"ref36","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.001.1900287"},{"key":"ref358","doi-asserted-by":"publisher","DOI":"10.1002\/sat.1393"},{"key":"ref35","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.001.1900652"},{"key":"ref355","doi-asserted-by":"publisher","DOI":"10.1109\/ICUMT.2018.8631208"},{"key":"ref34","article-title":"Six key enablers for machine type communication in 6G","author":"huda mahmood","year":"2019","journal-title":"arXiv 1903 05406"},{"key":"ref356","doi-asserted-by":"publisher","DOI":"10.1016\/j.jnca.2012.07.012"},{"key":"ref547","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2019.2924010"},{"key":"ref352","doi-asserted-by":"publisher","DOI":"10.1515\/nanoph-2019-0006"},{"key":"ref546","doi-asserted-by":"publisher","DOI":"10.1109\/ALLERTON.2017.8262812"},{"key":"ref351","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2013.120713.130417"},{"key":"ref354","doi-asserted-by":"publisher","DOI":"10.1109\/ISWCS.2018.8491095"},{"key":"ref353","doi-asserted-by":"publisher","DOI":"10.1109\/LCOMM.2017.2784454"},{"key":"ref543","doi-asserted-by":"publisher","DOI":"10.1109\/LCOMM.2019.2915977"},{"key":"ref542","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2018.2850226"},{"key":"ref545","doi-asserted-by":"publisher","DOI":"10.1109\/LWC.2020.3019321"},{"key":"ref350","doi-asserted-by":"publisher","DOI":"10.1109\/JSSC.2003.817249"},{"key":"ref544","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2019.2893928"},{"key":"ref491","doi-asserted-by":"publisher","DOI":"10.1109\/TSMCC.2012.2189204"},{"key":"ref490","doi-asserted-by":"publisher","DOI":"10.1109\/IE.2015.29"},{"key":"ref493","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2016.7721736"},{"key":"ref492","doi-asserted-by":"publisher","DOI":"10.1109\/MIS.2015.57"},{"key":"ref495","doi-asserted-by":"publisher","DOI":"10.1109\/MAES.2008.4665323"},{"key":"ref494","doi-asserted-by":"publisher","DOI":"10.1109\/ICBDSC.2016.7460395"},{"key":"ref497","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2017.2745201"},{"key":"ref496","doi-asserted-by":"publisher","DOI":"10.1109\/CCST.2006.313456"},{"key":"ref487","doi-asserted-by":"publisher","DOI":"10.1109\/ICUFN.2017.7993840"},{"key":"ref28","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2020.2975559"},{"key":"ref488","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2018.2844296"},{"key":"ref27","doi-asserted-by":"publisher","DOI":"10.1109\/MITP.2019.2963491"},{"key":"ref489","doi-asserted-by":"publisher","DOI":"10.1080\/09720510.2017.1395171"},{"key":"ref29","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2019.2954595"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1016\/j.comcom.2020.07.020"},{"key":"ref348","doi-asserted-by":"publisher","DOI":"10.1145\/2534169.2486015"},{"key":"ref349","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-020-17808-y"},{"key":"ref22","article-title":"A survey of intelligent reflecting surfaces (IRSs): Towards 6G wireless communication networks","author":"zhao","year":"2019","journal-title":"arXiv 1907 04789"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.1109\/6GSUMMIT49458.2020.9083784"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.2981745"},{"key":"ref344","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2017.2783901"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2019.2935192"},{"key":"ref345","doi-asserted-by":"publisher","DOI":"10.1186\/s13638-019-1391-7"},{"key":"ref26","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2019.2924820"},{"key":"ref346","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2019.2898474"},{"key":"ref25","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2019.2921162"},{"key":"ref347","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2018.2799848"},{"key":"ref50","doi-asserted-by":"publisher","DOI":"10.1016\/j.dsp.2019.06.007"},{"key":"ref383","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2011.2159690"},{"key":"ref51","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2018.2803045"},{"key":"ref382","first-page":"18","article-title":"Very low earth orbit mission concepts for earth observation: Benefits and challenges","author":"llop","year":"2014","journal-title":"Proc Reinventing Space Conf"},{"key":"ref381","doi-asserted-by":"publisher","DOI":"10.1145\/2387027.2387030"},{"key":"ref380","author":"grace","year":"2011","journal-title":"Broadband Communications via High Altitude Platforms"},{"key":"ref387","doi-asserted-by":"publisher","DOI":"10.1007\/s11277-005-0742-3"},{"key":"ref386","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2005.1423332"},{"key":"ref385","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2017.2757924"},{"key":"ref384","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2018.2864423"},{"key":"ref486","doi-asserted-by":"publisher","DOI":"10.1109\/ICCSE.2014.6926609"},{"key":"ref485","doi-asserted-by":"publisher","DOI":"10.1109\/JSEN.2017.2705043"},{"key":"ref484","doi-asserted-by":"publisher","DOI":"10.1109\/JCSSE.2017.8025904"},{"key":"ref483","doi-asserted-by":"publisher","DOI":"10.1109\/JSEN.2017.2718107"},{"key":"ref482","doi-asserted-by":"publisher","DOI":"10.1109\/INCITE.2016.7857603"},{"key":"ref481","doi-asserted-by":"publisher","DOI":"10.1109\/ICMIC.2015.7409402"},{"key":"ref480","doi-asserted-by":"publisher","DOI":"10.3390\/agronomy10020207"},{"key":"ref478","doi-asserted-by":"publisher","DOI":"10.1016\/j.jii.2020.100128"},{"key":"ref479","doi-asserted-by":"publisher","DOI":"10.1016\/j.agsy.2017.01.023"},{"key":"ref476","article-title":"6G white paper on edge intelligence","author":"peltonen","year":"2020","journal-title":"arXiv 2004 14850"},{"key":"ref477","doi-asserted-by":"publisher","DOI":"10.1109\/6GSUMMIT49458.2020.9083794"},{"key":"ref59","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2011.060711.101155"},{"key":"ref379","doi-asserted-by":"publisher","DOI":"10.1109\/35.620534"},{"key":"ref58","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2013.130206"},{"key":"ref57","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2013.130205"},{"key":"ref377","doi-asserted-by":"publisher","DOI":"10.1007\/s11554-021-01093-z"},{"key":"ref56","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2019.2913173"},{"key":"ref378","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2018.1800023"},{"key":"ref55","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2007.904812"},{"key":"ref54","doi-asserted-by":"crossref","first-page":"968","DOI":"10.1109\/LSP.2007.905051","article-title":"On parameter identifiability of MIMO radar","volume":"14","author":"li","year":"2007","journal-title":"IEEE Signal Process Lett"},{"key":"ref53","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2007.894398"},{"key":"ref52","doi-asserted-by":"publisher","DOI":"10.1109\/ACSSC.2003.1291865"},{"key":"ref370","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.1800594"},{"key":"ref372","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2018.2890133"},{"key":"ref40","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.1900516"},{"key":"ref371","doi-asserted-by":"publisher","DOI":"10.1016\/j.jnca.2020.102706"},{"key":"ref374","doi-asserted-by":"publisher","DOI":"10.1145\/3321289.3321310"},{"key":"ref373","doi-asserted-by":"publisher","DOI":"10.1109\/SPAWC.2018.8445936"},{"key":"ref376","doi-asserted-by":"publisher","DOI":"10.1080\/23311916.2020.1763553"},{"key":"ref375","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2021.3100139"},{"key":"ref473","doi-asserted-by":"publisher","DOI":"10.1002\/sres.2705"},{"key":"ref472","author":"schwab","year":"2017","journal-title":"The Fourth Industrial Revolution"},{"key":"ref475","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOMW.2018.8644245"},{"key":"ref474","doi-asserted-by":"publisher","DOI":"10.1109\/SURV.2012.071812.00124"},{"key":"ref471","doi-asserted-by":"publisher","DOI":"10.1016\/j.procir.2016.07.041"},{"key":"ref470","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1007\/s12599-014-0334-4","article-title":"Industry 4.0","volume":"6","author":"lasi","year":"2014","journal-title":"Bus Inf Syst Eng"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1038\/s41928-019-0355-6"},{"key":"ref469","doi-asserted-by":"publisher","DOI":"10.1080\/00207543.2018.1444806"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2019.2957648"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2018.2848498"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2015.2461602"},{"key":"ref8","first-page":"47","article-title":"Evolution of mobile wireless communication networks-1G to 5G as well as future prospective of next generation communication network","volume":"2","author":"sharma","year":"2013","journal-title":"Int J Comput Sci Mob Comput"},{"key":"ref465","doi-asserted-by":"publisher","DOI":"10.1016\/j.jnca.2013.02.036"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2014.7000985"},{"key":"ref466","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2014.2327587"},{"key":"ref49","doi-asserted-by":"publisher","DOI":"10.1109\/MCOMSTD.2017.1700042"},{"key":"ref467","first-page":"2v","volume":"22","year":"2018","journal-title":"Study on MEC support for V2X use cases"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1016\/j.phycom.2013.11.009"},{"key":"ref468","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.011.1900242"},{"key":"ref46","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2010.092810.091092"},{"key":"ref366","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2018.2874531"},{"key":"ref45","doi-asserted-by":"publisher","DOI":"10.1109\/VETEC.1997.600425"},{"key":"ref367","doi-asserted-by":"publisher","DOI":"10.1016\/j.comnet.2017.05.021"},{"key":"ref48","doi-asserted-by":"crossref","first-page":"1436","DOI":"10.1109\/TCOMM.2013.020413.110848","article-title":"Energy and spectral efficiency of very large multiuser MIMO systems","volume":"61","author":"ngo","year":"2013","journal-title":"IEEE Trans Commun"},{"key":"ref368","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2019.2947921"},{"key":"ref47","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9781316799895"},{"key":"ref369","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2019.2927313"},{"key":"ref42","doi-asserted-by":"crossref","first-page":"253","DOI":"10.1016\/j.dcan.2020.05.003","article-title":"Service-aware 6G: An intelligent and open network based on the convergence of communication, computing and caching","volume":"6","author":"zhou","year":"2020","journal-title":"Digit Commun Netw"},{"key":"ref41","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2020.2982417"},{"key":"ref44","doi-asserted-by":"publisher","DOI":"10.1109\/JSTSP.2014.2317671"},{"key":"ref43","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2007.904815"},{"key":"ref460","doi-asserted-by":"publisher","DOI":"10.1109\/SURV.2011.122111.00145"},{"key":"ref463","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.2018.1700460"},{"key":"ref464","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2019.2961937"},{"key":"ref461","doi-asserted-by":"publisher","DOI":"10.1109\/W-FiCloud.2016.28"},{"key":"ref462","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2014.2320093"},{"key":"ref320","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2013.032013.120494"},{"key":"ref321","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2011.5783984"},{"key":"ref73","doi-asserted-by":"publisher","DOI":"10.3390\/electronics9122155"},{"key":"ref72","article-title":"Downlink training sequence design based on achievable sum rate maximisation in FDD massive MIMO systems","author":"alsabah","year":"2020"},{"key":"ref71","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.3000302"},{"key":"ref70","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.2016.2615627"},{"key":"ref76","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.1900157"},{"key":"ref318","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2016.2550338"},{"key":"ref77","doi-asserted-by":"publisher","DOI":"10.1109\/EuCAP.2014.6901799"},{"key":"ref317","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2014.2351411"},{"key":"ref74","doi-asserted-by":"publisher","DOI":"10.1007\/s11277-021-08423-1"},{"key":"ref316","doi-asserted-by":"publisher","DOI":"10.1109\/TCC.2016.2522439"},{"key":"ref75","doi-asserted-by":"publisher","DOI":"10.1109\/VTCSpring.2018.8417893"},{"key":"ref315","doi-asserted-by":"publisher","DOI":"10.1109\/MNET.2015.7018201"},{"key":"ref314","first-page":"1","author":"mobile","year":"2011","journal-title":"C-RAN the Road Towards Green RAN"},{"key":"ref313","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2020.3000328"},{"key":"ref78","doi-asserted-by":"publisher","DOI":"10.1109\/EuCAP.2014.6901730"},{"key":"ref312","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2010.5621969"},{"key":"ref79","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOMW.2014.7063445"},{"key":"ref311","doi-asserted-by":"publisher","DOI":"10.1561\/0100000088"},{"key":"ref457","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2010.5675779"},{"key":"ref456","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2020.2973314"},{"key":"ref455","doi-asserted-by":"publisher","DOI":"10.1109\/CCNC.2015.7158084"},{"key":"ref454","doi-asserted-by":"publisher","DOI":"10.1038\/s41569-020-00445-9"},{"key":"ref459","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2016.2527741"},{"key":"ref458","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2016.2537306"},{"key":"ref319","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2010.5621970"},{"key":"ref450","year":"2017","journal-title":"National Institute on Aging National Institutes of Health US Department of Health and Human Services (2011) Global Health and Aging"},{"key":"ref451","doi-asserted-by":"publisher","DOI":"10.1049\/iet-cps.2016.0023"},{"key":"ref452","doi-asserted-by":"publisher","DOI":"10.3390\/s141019551"},{"key":"ref453","doi-asserted-by":"publisher","DOI":"10.1109\/TEMC.2011.2164803"},{"key":"ref310","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2011.6056688"},{"key":"ref60","doi-asserted-by":"publisher","DOI":"10.1109\/JSTSP.2014.2310053"},{"key":"ref62","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2016.2535204"},{"key":"ref61","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2016.2553021"},{"key":"ref63","doi-asserted-by":"publisher","DOI":"10.1109\/SPAWC.2017.8227727"},{"key":"ref305","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2011.6094024"},{"key":"ref64","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2017.2768423"},{"key":"ref304","doi-asserted-by":"publisher","DOI":"10.1109\/SURV.2012.020212.00049"},{"key":"ref65","doi-asserted-by":"publisher","DOI":"10.3390\/asi4030054"},{"key":"ref307","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2020.2971486"},{"key":"ref66","doi-asserted-by":"publisher","DOI":"10.1109\/OnlineGreenCom.2013.6731024"},{"key":"ref306","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2014.2327066"},{"key":"ref67","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2014.2364188"},{"key":"ref301","doi-asserted-by":"publisher","DOI":"10.1109\/TBC.2014.2361471"},{"key":"ref68","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2015.2400437"},{"key":"ref300","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOM.2016.7841947"},{"key":"ref69","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.2013.2269476"},{"key":"ref303","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2011.6108331"},{"key":"ref302","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2016.2533580"},{"key":"ref444","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2017.1600514"},{"key":"ref443","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2014.2306328"},{"key":"ref446","doi-asserted-by":"publisher","DOI":"10.1109\/MAP.2012.6230714"},{"key":"ref445","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2013.6525605"},{"key":"ref448","doi-asserted-by":"crossref","first-page":"40","DOI":"10.23919\/JCIN.2019.8917871","article-title":"Large intelligent surface\/antennas (LISA): Making reflective radios smart","volume":"4","author":"liang","year":"2019","journal-title":"J Commun Inf Netw"},{"key":"ref309","doi-asserted-by":"publisher","DOI":"10.4103\/0256-4602.113526"},{"key":"ref447","doi-asserted-by":"publisher","DOI":"10.1038\/srep06693"},{"key":"ref308","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2010.939904"},{"key":"ref449","article-title":"Rayleigh fading modeling and channel hardening for reconfigurable intelligent surfaces","author":"bj\u00f6rnson","year":"2020","journal-title":"arXiv 2009 04723"},{"key":"ref441","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2017.2717986"},{"key":"ref442","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2018.2816597"},{"key":"ref440","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2017.2703901"},{"key":"ref95","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2019.2936025"},{"key":"ref94","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2018.1700659"},{"key":"ref93","doi-asserted-by":"publisher","DOI":"10.1038\/lsa.2014.99"},{"key":"ref92","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2018.2816577"},{"key":"ref91","doi-asserted-by":"publisher","DOI":"10.1109\/ICC40277.2020.9148961"},{"key":"ref342","doi-asserted-by":"publisher","DOI":"10.1109\/TGCN.2019.2911161"},{"key":"ref90","doi-asserted-by":"publisher","DOI":"10.1109\/GLOCOM.2018.8647620"},{"key":"ref343","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2017.1600806"},{"key":"ref340","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2013.031813.120224"},{"key":"ref341","doi-asserted-by":"publisher","DOI":"10.1109\/OnlineGreenCom.2013.6731038"},{"key":"ref336","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2017.1600116"},{"key":"ref335","doi-asserted-by":"publisher","DOI":"10.1109\/VTCSpring.2015.7146165"},{"key":"ref334","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2013.2281026"},{"key":"ref333","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2018.2841964"},{"key":"ref98","doi-asserted-by":"publisher","DOI":"10.1109\/LWC.2019.2960779"},{"key":"ref99","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2019.2922609"},{"key":"ref339","doi-asserted-by":"publisher","DOI":"10.1109\/ISIT.2008.4595260"},{"key":"ref96","doi-asserted-by":"publisher","DOI":"10.1109\/OJCOMS.2020.3020925"},{"key":"ref338","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2018.2872615"},{"key":"ref97","article-title":"White paper on broadband connectivity in 6G","author":"rajatheva","year":"2020","journal-title":"arXiv 2004 14247"},{"key":"ref337","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2018.2797886"},{"key":"ref439","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2016.2593486"},{"key":"ref438","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2015.7060516"},{"key":"ref437","doi-asserted-by":"publisher","DOI":"10.1109\/RBME.2017.2749527"},{"key":"ref436","doi-asserted-by":"publisher","DOI":"10.1109\/MCE.2017.2755338"},{"key":"ref435","doi-asserted-by":"publisher","DOI":"10.1109\/ICECTA48151.2019.8959607"},{"key":"ref434","doi-asserted-by":"publisher","DOI":"10.1109\/LATINCOM.2018.8613209"},{"key":"ref433","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2016.2525398"},{"key":"ref432","doi-asserted-by":"publisher","DOI":"10.1109\/MELCON.2016.7495388"},{"key":"ref430","doi-asserted-by":"publisher","DOI":"10.1007\/s11036-019-01430-4"},{"key":"ref431","year":"2015","journal-title":"5G Automotive Vision"},{"key":"ref82","doi-asserted-by":"publisher","DOI":"10.1109\/ISTT.2014.7238169"},{"key":"ref81","doi-asserted-by":"publisher","DOI":"10.1109\/MICC.2013.6805871"},{"key":"ref84","doi-asserted-by":"crossref","first-page":"1848","DOI":"10.3837\/tiis.2014.06.002","article-title":"Review of channel quality indicator estimation schemes for multi-user MIMO in 3GPP LTE\/LTE-a systems","volume":"8","author":"abdulhasan","year":"2014","journal-title":"KSII Trans Internet Inf Syst"},{"key":"ref83","doi-asserted-by":"publisher","DOI":"10.1109\/SCOReD.2013.7002567"},{"key":"ref330","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2014.6957150"},{"key":"ref80","doi-asserted-by":"publisher","DOI":"10.1007\/s11277-015-2350-1"},{"key":"ref331","doi-asserted-by":"publisher","DOI":"10.1038\/s41528-020-00092-7"},{"key":"ref332","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2015.2391531"},{"key":"ref89","first-page":"106","article-title":"Towards smart and reconfigurable environment: Intelligent reflecting surface aided wireless network","volume":"58","author":"qingqing","year":"2019","journal-title":"IEEE Commun Mag"},{"key":"ref323","doi-asserted-by":"publisher","DOI":"10.1109\/INFCOM.2012.6195845"},{"key":"ref322","doi-asserted-by":"publisher","DOI":"10.1109\/MC.2010.98"},{"key":"ref325","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2015.2432023"},{"key":"ref324","doi-asserted-by":"publisher","DOI":"10.1109\/INFCOMW.2014.6849260"},{"key":"ref85","doi-asserted-by":"publisher","DOI":"10.1016\/j.comnet.2016.09.004"},{"key":"ref327","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2013.2267738"},{"key":"ref429","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2017.2764181"},{"key":"ref86","doi-asserted-by":"publisher","DOI":"10.1109\/ACSSC.2013.6810277"},{"key":"ref326","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2012.122212.120086"},{"key":"ref87","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2016.2594120"},{"key":"ref329","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2016.2544498"},{"key":"ref88","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.2017.1600343"},{"key":"ref328","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2014.2323971"},{"key":"ref426","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2018.2885541"},{"key":"ref425","doi-asserted-by":"publisher","DOI":"10.23919\/ICACT.2017.7890067"},{"key":"ref428","doi-asserted-by":"publisher","DOI":"10.1109\/COMST.2018.2851452"},{"key":"ref427","doi-asserted-by":"publisher","DOI":"10.1109\/MVT.2013.2295069"},{"key":"ref422","doi-asserted-by":"publisher","DOI":"10.1145\/237814.237866"},{"key":"ref421","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2005.851157"},{"key":"ref424","doi-asserted-by":"publisher","DOI":"10.1109\/IPOC.2011.6122872"},{"key":"ref423","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2019.2907245"},{"key":"ref399","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2010.101202"},{"key":"ref389","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2020.3018837"},{"key":"ref388","doi-asserted-by":"publisher","DOI":"10.1109\/TSSA.2017.8272902"},{"key":"ref390","doi-asserted-by":"publisher","DOI":"10.1109\/MWC.001.2000076"},{"key":"ref397","doi-asserted-by":"crossref","first-page":"1745","DOI":"10.1109\/VETECS.2001.944993","article-title":"Enhancing the cellular downlink capacity via co-processing at the transmitting end","volume":"3","author":"shamai","year":"2001","journal-title":"Proc IEEE VTS 53rd Veh Technol Conf"},{"key":"ref398","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2003.1186553"},{"key":"ref395","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2017.2698449"},{"key":"ref396","doi-asserted-by":"publisher","DOI":"10.1186\/s13638-019-1507-0"},{"key":"ref393","doi-asserted-by":"publisher","DOI":"10.4108\/eai.11-11-2020.166959"},{"key":"ref394","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2017.2655515"},{"key":"ref391","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2021.3056091"},{"key":"ref392","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2021.3088692"}],"container-title":["IEEE Access"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx7\/6287639\/9312710\/09598915.pdf?arnumber=9598915","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,1,14]],"date-time":"2023-01-14T10:18:55Z","timestamp":1673691535000},"score":1,"resource":{"primary":{"URL":"https:\/\/ieeexplore.ieee.org\/document\/9598915\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021]]},"references-count":547,"URL":"https:\/\/doi.org\/10.1109\/access.2021.3124812","relation":{},"ISSN":["2169-3536"],"issn-type":[{"value":"2169-3536","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021]]}}}