{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,22]],"date-time":"2025-10-22T05:23:04Z","timestamp":1761110584678},"reference-count":66,"publisher":"Springer Science and Business Media LLC","issue":"4","license":[{"start":{"date-parts":[[2021,4,14]],"date-time":"2021-04-14T00:00:00Z","timestamp":1618358400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2021,4,14]],"date-time":"2021-04-14T00:00:00Z","timestamp":1618358400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Wireless Pers Commun"],"published-print":{"date-parts":[[2021,8]]},"DOI":"10.1007\/s11277-021-08423-1","type":"journal-article","created":{"date-parts":[[2021,4,14]],"date-time":"2021-04-14T10:03:22Z","timestamp":1618394602000},"page":"3609-3630","update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A Partial CSI Estimation Approach for Downlink FDD massive-MIMO System with Different Base Transceiver Station Topologies"],"prefix":"10.1007","volume":"119","author":[{"given":"Marwah Abdulrazzaq","family":"Naser","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Muntadher Qasim","family":"Alsabah","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Montadar Abas","family":"Taher","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,4,14]]},"reference":[{"issue":"3","key":"8423_CR1","doi-asserted-by":"publisher","first-page":"28","DOI":"10.1109\/MVT.2019.2921208","volume":"14","author":"Z Zhang","year":"2019","unstructured":"Zhang, Z., Xiao, Y., Ma, Z., Xiao, M., Ding, Z., Lei, X., et al. (2019). 6G wireless networks: Vision, requirements, architecture, and key technologies. IEEE Vehicular Technology Magazine, 14(3), 28\u201341.","journal-title":"IEEE Vehicular Technology Magazine"},{"issue":"4","key":"8423_CR2","doi-asserted-by":"publisher","first-page":"70","DOI":"10.1109\/MNET.2019.1800418","volume":"33","author":"P Yang","year":"2019","unstructured":"Yang, P., Xiao, Y., Xiao, M., & Li, S. (2019). 6G wireless communications: Vision and potential techniques. IEEE Network, 33(4), 70\u201375.","journal-title":"IEEE Network"},{"issue":"3","key":"8423_CR3","doi-asserted-by":"publisher","first-page":"55","DOI":"10.1109\/MCOM.001.1900411","volume":"58","author":"M Giordani","year":"2020","unstructured":"Giordani, M., Polese, M., Mezzavilla, M., Rangan, S., & Zorzi, M. (2020). Toward 6G networks: Use cases and technologies. IEEE Communications Magazine, 58(3), 55\u201361.","journal-title":"IEEE Communications Magazine"},{"issue":"1","key":"8423_CR4","doi-asserted-by":"publisher","first-page":"20","DOI":"10.1038\/s41928-019-0355-6","volume":"3","author":"S Dang","year":"2020","unstructured":"Dang, S., Amin, O., Shihada, B., & Alouini, M.-S. (2020). What should 6G be? Nature Electronics, 3(1), 20\u201329.","journal-title":"Nature Electronics"},{"key":"8423_CR5","doi-asserted-by":"publisher","DOI":"10.1016\/j.jii.2020.100158","volume":"19","author":"Y Lu","year":"2020","unstructured":"Lu, Y., & Zheng, X. (2020). 6G: A survey on technologies, scenarios, challenges, and the related issues. Journal of Industrial Information Integration, 19,.","journal-title":"Journal of Industrial Information Integration"},{"key":"8423_CR6","doi-asserted-by":"crossref","unstructured":"Akyildiz, I.F., Kak, A., & Nie, S. (2020). 6G and beyond: The future of wireless communications systems. IEEE Access, vol. 8, pp. 133\u00a0995","DOI":"10.1109\/ACCESS.2020.3010896"},{"key":"8423_CR7","doi-asserted-by":"publisher","first-page":"107","DOI":"10.1109\/OJVT.2020.2980003","volume":"1","author":"S Zhang","year":"2020","unstructured":"Zhang, S., Xiang, C., & Xu, S. (2020). 6G: Connecting everything by 1000 times price reduction. IEEE Open Journal of Vehicular Technology, 1, 107\u2013115.","journal-title":"IEEE Open Journal of Vehicular Technology"},{"issue":"5","key":"8423_CR8","doi-asserted-by":"publisher","first-page":"126","DOI":"10.1109\/MWC.001.1900516","volume":"27","author":"G Gui","year":"2020","unstructured":"Gui, G., Liu, M., Tang, F., Kato, N., & Adachi, F. (2020). 6G: Opening new horizons for integration of comfort, security, and intelligence. IEEE Wireless Communications, 27(5), 126\u2013132.","journal-title":"IEEE Wireless Communications"},{"issue":"4","key":"8423_CR9","doi-asserted-by":"publisher","first-page":"118","DOI":"10.1109\/MWC.001.1900488","volume":"27","author":"F Tariq","year":"2020","unstructured":"Tariq, F., Khandaker, M. R., Wong, K.-K., Imran, M. A., Bennis, M., & Debbah, M. (2020). A speculative study on 6G. IEEE Wireless Communications, 27(4), 118\u2013125.","journal-title":"IEEE Wireless Communications"},{"key":"8423_CR10","doi-asserted-by":"crossref","unstructured":"Han, C., Jornet, J. M., & Akyildiz, I. (2018).\u201cUltra-massive MIMO channel modeling for graphene-enabled terahertz-band communications. In 2018 IEEE 87th vehicular technology conference (VTC Spring). IEEE (pp. 1\u20135).","DOI":"10.1109\/VTCSpring.2018.8417893"},{"issue":"4","key":"8423_CR11","doi-asserted-by":"publisher","first-page":"74","DOI":"10.1109\/MWC.001.1900157","volume":"27","author":"E De Carvalho","year":"2020","unstructured":"De Carvalho, E., Ali, A., Amiri, A., Angjelichinoski, M., & Heath, R. W. (2020). Non-stationarities in extra-large-scale massive MIMO. IEEE Wireless Communications, 27(4), 74\u201380.","journal-title":"IEEE Wireless Communications"},{"issue":"4","key":"8423_CR12","doi-asserted-by":"publisher","first-page":"1436","DOI":"10.1109\/TCOMM.2013.020413.110848","volume":"61","author":"HQ Ngo","year":"2013","unstructured":"Ngo, H. Q., Larsson, E. G., & Marzetta, T. L. (2013). Energy and spectral efficiency of very large multiuser MIMO systems. IEEE Transactions on Communications, 61(4), 1436\u20131449.","journal-title":"IEEE Transactions on Communications"},{"issue":"2","key":"8423_CR13","doi-asserted-by":"publisher","first-page":"186","DOI":"10.1109\/MCOM.2014.6736761","volume":"52","author":"EG Larsson","year":"2014","unstructured":"Larsson, E. G., Edfors, O., Tufvesson, F., & Marzetta, T. L. (2014). Massive MIMO for next generation wireless systems. IEEE Communications Magazine, 52(2), 186\u2013195.","journal-title":"IEEE Communications Magazine"},{"issue":"5","key":"8423_CR14","doi-asserted-by":"publisher","first-page":"742","DOI":"10.1109\/JSTSP.2014.2317671","volume":"8","author":"L Lu","year":"2014","unstructured":"Lu, L., Li, G. Y., Swindlehurst, A. L., Ashikhmin, A., & Zhang, R. (2014). An overview of massive MIMO: Benefits and challenges. IEEE journal of Selected Topics in Signal Processing, 8(5), 742\u2013758.","journal-title":"IEEE journal of Selected Topics in Signal Processing"},{"key":"8423_CR15","doi-asserted-by":"publisher","first-page":"11","DOI":"10.15325\/BLTJ.2015.2407793","volume":"20","author":"TL Marzetta","year":"2015","unstructured":"Marzetta, T. L. (2015). Massive MIMO: An introduction. Bell Labs Technical Journal, 20, 11\u201322.","journal-title":"Bell Labs Technical Journal"},{"key":"8423_CR16","doi-asserted-by":"crossref","unstructured":"Marzetta, T. L., Larsson, E. G., Yang, H., & Ngo, H. Q. (2016). Fundamentals of Massive MIMO. Cambridge University Press.","DOI":"10.1017\/CBO9781316799895"},{"key":"8423_CR17","doi-asserted-by":"crossref","unstructured":"Medbo, J., B\u00f6rner, K., Haneda, K., Hovinen, V., Imai, T., J\u00e4rvelainen, J., J\u00e4ms\u00e4, T., Karttunen, A., Kusume, K., & Kyr\u00f6l\u00e4inen et\u00a0al. J. (2014). Channel modelling for the fifth generation mobile communications. In The 8th European conference on antennas and propagation (EuCAP 2014). IEEE (pp. 219\u2013223).","DOI":"10.1109\/EuCAP.2014.6901730"},{"key":"8423_CR18","doi-asserted-by":"crossref","unstructured":"Mart\u00ednez, \u00c0. O., De Carvalho, E., & Nielsen, J. \u00d8. (2014Towards very large aperture massive MIMO: A measurement based study. In 2014 IEEE Globecom workshops (GC Wkshps). IEEE (pp. 281\u2013286).","DOI":"10.1109\/GLOCOMW.2014.7063445"},{"issue":"8","key":"8423_CR19","doi-asserted-by":"publisher","first-page":"2640","DOI":"10.1109\/TWC.2011.060711.101155","volume":"10","author":"J Jose","year":"2011","unstructured":"Jose, J., Ashikhmin, A., Marzetta, T. L., & Vishwanath, S. (2011). Pilot contamination and precoding in multi-cell TDD systems. IEEE Transactions on Wireless Communications, 10(8), 2640\u20132651.","journal-title":"IEEE Transactions on Wireless Communications"},{"key":"8423_CR20","doi-asserted-by":"crossref","unstructured":"Yang, H., & Marzetta, T.L. (2013). Total energy efficiency of cellular large scale antenna system multiple access mobile networks. In 2013 IEEE online conference on green communications (OnlineGreenComm). IEEE (pp. 27\u201332).","DOI":"10.1109\/OnlineGreenCom.2013.6731024"},{"issue":"2","key":"8423_CR21","doi-asserted-by":"publisher","first-page":"160","DOI":"10.1109\/JSAC.2013.130205","volume":"31","author":"J Hoydis","year":"2013","unstructured":"Hoydis, J., Ten Brink, S., & Debbah, M. (2013). Massive MIMO in the UL\/DL of cellular networks: How many antennas do we need? IEEE Journal on selected Areas in Communications, 31(2), 160\u2013171.","journal-title":"IEEE Journal on selected Areas in Communications"},{"issue":"5","key":"8423_CR22","doi-asserted-by":"publisher","first-page":"773","DOI":"10.1109\/JSTSP.2014.2310053","volume":"8","author":"RR M\u00fcller","year":"2014","unstructured":"M\u00fcller, R. R., Cottatellucci, L., & Vehkapera, M. (2014). Blind pilot decontamination. IEEE Journal of Selected Topics in Signal Processing, 8(5), 773\u2013786.","journal-title":"IEEE Journal of Selected Topics in Signal Processing"},{"issue":"6","key":"8423_CR23","doi-asserted-by":"publisher","first-page":"3059","DOI":"10.1109\/TWC.2015.2400437","volume":"14","author":"E Bj\u00f6rnson","year":"2015","unstructured":"Bj\u00f6rnson, E., Sanguinetti, L., Hoydis, J., & Debbah, M. (2015). Optimal design of energy-efficient multi-user MIMO systems: Is massive MIMO the answer? IEEE Transactions on Wireless Communications, 14(6), 3059\u20133075.","journal-title":"IEEE Transactions on Wireless Communications"},{"issue":"11","key":"8423_CR24","doi-asserted-by":"publisher","first-page":"2990","DOI":"10.1109\/TSP.2016.2535204","volume":"64","author":"H Yin","year":"2016","unstructured":"Yin, H., Cottatellucci, L., Gesbert, D., M\u00fcller, R. R., & He, G. (2016). Robust pilot decontamination based on joint angle and power domain discrimination. IEEE Transactions on Signal Processing, 64(11), 2990\u20133003.","journal-title":"IEEE Transactions on Signal Processing"},{"issue":"1","key":"8423_CR25","doi-asserted-by":"publisher","first-page":"574","DOI":"10.1109\/TWC.2017.2768423","volume":"17","author":"E Bj\u00f6rnson","year":"2017","unstructured":"Bj\u00f6rnson, E., Hoydis, J., & Sanguinetti, L. (2017). Massive MIMO has unlimited capacity. IEEE Transactions on Wireless Communications, 17(1), 574\u2013590.","journal-title":"IEEE Transactions on Wireless Communications"},{"key":"8423_CR26","unstructured":"Ericsson (2016). Ericsson mobility report: On the pulse of the network society. technical report 2016. [online] available: https:\/\/www.ericsson.com\/assets\/local\/mobility-report\/documents\/2016\/ericsson-mobility-report-november-2016.pdf.Ericsson."},{"key":"8423_CR27","unstructured":"Kaltenberger, F., Jiang, H., Guillaud, M., & Knopp, R. (2010). \u201cRelative channel reciprocity calibration in MIMO\/TDD systems,\u201d in Future Network & Mobile Summit, Florence, Italy. IEEE, 16-18 June, pp. 1\u201310."},{"key":"8423_CR28","doi-asserted-by":"crossref","unstructured":"Bjrnson, E., Hoydis, J., Kountouris, M., & Debbah, M. (2013).\u201cHardware impairments in large-scale MISO systems: Energy efficiency, estimation, and capacity limits,\u201d in 18th International Conference on Digital Signal Processing (DSP), July July, pp. 1\u20136.","DOI":"10.1109\/ICDSP.2013.6622755"},{"issue":"9","key":"8423_CR29","doi-asserted-by":"publisher","first-page":"3734","DOI":"10.1109\/TCOMM.2017.2676088","volume":"65","author":"D Mi","year":"2017","unstructured":"Mi, D., Dianati, M., Zhang, L., Muhaidat, S., & Tafazolli, R. (2017). Massive MIMO performance with imperfect channel reciprocity and channel estimation error. IEEE Transactions on Communications, 65(9), 3734\u20133749.","journal-title":"IEEE Transactions on Communications"},{"issue":"5","key":"8423_CR30","doi-asserted-by":"publisher","first-page":"3042","DOI":"10.1109\/TWC.2017.2674659","volume":"16","author":"J Vieira","year":"2017","unstructured":"Vieira, J., Rusek, F., Edfors, O., Malkowsky, S., Liu, L., & Tufvesson, F. (2017). Reciprocity calibration for massive MIMO: Proposal, modeling, and validation. IEEE Transactions on Wireless Communications, 16(5), 3042\u20133056.","journal-title":"IEEE Transactions on Wireless Communications"},{"key":"8423_CR31","doi-asserted-by":"crossref","unstructured":"Tse, D., & Viswanath, P. (2005). Fundamentals of wireless communication. Cambridge University Press.","DOI":"10.1017\/CBO9780511807213"},{"issue":"4","key":"8423_CR32","doi-asserted-by":"publisher","first-page":"951","DOI":"10.1109\/TIT.2003.809594","volume":"49","author":"B Hassibi","year":"2003","unstructured":"Hassibi, B., & Hochwald, B. M. (2003). How much training is needed in multiple-antenna wireless links? IEEE Transactions on Information Theory, 49(4), 951\u2013963.","journal-title":"IEEE Transactions on Information Theory"},{"issue":"1","key":"8423_CR33","doi-asserted-by":"publisher","first-page":"40","DOI":"10.1109\/MSP.2011.2178495","volume":"30","author":"F Rusek","year":"2013","unstructured":"Rusek, F., Persson, D., Lau, B. K., Larsson, E. G., Marzetta, T. L., Edfors, O., & Tufvesson, F. (2013). Scaling up MIMO: Opportunities and challenges with very large arrays. IEEE Signal Processing Magazine, 30(1), 40\u201360.","journal-title":"IEEE Signal Processing Magazine"},{"issue":"2","key":"8423_CR34","doi-asserted-by":"publisher","first-page":"114","DOI":"10.1109\/MCOM.2016.7402270","volume":"54","author":"E Bj\u00f6rnson","year":"2016","unstructured":"Bj\u00f6rnson, E., Larsson, E. G., & Marzetta, T. L. (2016). Massive MIMO: Ten myths and one critical question. IEEE Communications Magazine, 54(2), 114\u2013123.","journal-title":"IEEE Communications Magazine"},{"key":"8423_CR35","doi-asserted-by":"publisher","first-page":"108731","DOI":"10.1109\/ACCESS.2020.3000302","volume":"8","author":"M Alsabah","year":"2020","unstructured":"Alsabah, M., Vehkapera, M., & O\u2019Farrell, T. (2020). Non-iterative downlink training sequence design based on sum rate maximization in FDD massive MIMO systems. IEEE Access, 8, 108731\u2013108747.","journal-title":"IEEE Access"},{"issue":"12","key":"8423_CR36","doi-asserted-by":"publisher","first-page":"2155","DOI":"10.3390\/electronics9122155","volume":"9","author":"MA Naser","year":"2020","unstructured":"Naser, M. A., Alsabah, M., Mahmmod, B. M., Noordin, N. K., Abdulhussain, S. H., & Baker, T. (2020). Downlink training design for FDD massive MIMO systems in the presence of colored noise. Electronics, 9(12), 2155.","journal-title":"Electronics"},{"issue":"10","key":"8423_CR37","doi-asserted-by":"publisher","first-page":"6441","DOI":"10.1109\/TIT.2013.2269476","volume":"59","author":"A Adhikary","year":"2013","unstructured":"Adhikary, A., Nam, J., Ahn, J. Y., & Caire, G. (2013). Joint spatial division and multiplexing: The large-scale array regime. IEEE Transactions on Information Theory, 59(10), 6441\u20136463.","journal-title":"IEEE Transactions on Information Theory"},{"issue":"1","key":"8423_CR38","doi-asserted-by":"publisher","first-page":"336","DOI":"10.1109\/TIT.2016.2615627","volume":"63","author":"J Nam","year":"2017","unstructured":"Nam, J., Caire, G., & Ha, J. (2017). On the role of transmit correlation diversity in multiuser MIMO systems. IEEE Transactions on Information Theory, 63(1), 336\u2013354.","journal-title":"IEEE Transactions on Information Theory"},{"issue":"12","key":"8423_CR39","doi-asserted-by":"publisher","first-page":"3261","DOI":"10.1109\/TSP.2014.2324991","volume":"62","author":"X Rao","year":"2014","unstructured":"Rao, X., & Lau, V. K. (2014). Distributed compressive CSIT estimation and feedback for FDD multi-user massive MIMO systems. IEEE Transactions on Signal Processing, 62(12), 3261\u20133271.","journal-title":"IEEE Transactions on Signal Processing"},{"issue":"23","key":"8423_CR40","doi-asserted-by":"publisher","first-page":"6169","DOI":"10.1109\/TSP.2015.2463260","volume":"63","author":"Z Gao","year":"2015","unstructured":"Gao, Z., Dai, L., Wang, Z., & Chen, S. (2015). Spatially common sparsity based adaptive channel estimation and feedback for FDD massive MIMO. IEEE Transactions on Signal Processing, 63(23), 6169\u20136183.","journal-title":"IEEE Transactions on Signal Processing"},{"issue":"2","key":"8423_CR41","doi-asserted-by":"publisher","first-page":"601","DOI":"10.1109\/TCOMM.2015.2508809","volume":"64","author":"Z Gao","year":"2016","unstructured":"Gao, Z., Dai, L., Dai, W., Shim, B., & Wang, Z. (2016). Structured compressive sensing-based spatio-temporal joint channel estimation for FDD massive MIMO. IEEE Transactions on Communications, 64(2), 601\u2013617.","journal-title":"IEEE Transactions on Communications"},{"issue":"7","key":"8423_CR42","doi-asserted-by":"publisher","first-page":"2852","DOI":"10.1109\/TCOMM.2017.2691700","volume":"65","author":"Y Han","year":"2017","unstructured":"Han, Y., Lee, J., & Love, D. J. (2017). Compressed sensing-aided downlink channel training for FDD massive MIMO systems. IEEE Transactions on Communications, 65(7), 2852\u20132862.","journal-title":"IEEE Transactions on Communications"},{"issue":"5","key":"8423_CR43","doi-asserted-by":"publisher","first-page":"802","DOI":"10.1109\/JSTSP.2014.2313020","volume":"8","author":"J Choi","year":"2014","unstructured":"Choi, J., Love, D. J., & Bidigare, P. (2014). Downlink training techniques for FDD massive MIMO systems: Open-loop and closed-loop training with memory. IEEE Journal of Selected Topics in Signal Processing, 8(5), 802\u2013814.","journal-title":"IEEE Journal of Selected Topics in Signal Processing"},{"issue":"5","key":"8423_CR44","doi-asserted-by":"publisher","first-page":"787","DOI":"10.1109\/JSTSP.2014.2327572","volume":"8","author":"S Noh","year":"2014","unstructured":"Noh, S., Zoltowski, M. D., Sung, Y., & Love, D. J. (2014). Pilot beam pattern design for channel estimation in massive MIMO systems. IEEE Journal of Selected Topics in Signal Processing, 8(5), 787\u2013801.","journal-title":"IEEE Journal of Selected Topics in Signal Processing"},{"issue":"5","key":"8423_CR45","doi-asserted-by":"publisher","first-page":"549","DOI":"10.1109\/LSP.2014.2364180","volume":"22","author":"J So","year":"2015","unstructured":"So, J., Kim, D., Lee, Y., & Sung, Y. (2015). Pilot signal design for massive MIMO systems: A received signal-to-noise-ratio-based approach. IEEE Signal Processing Letters, 22(5), 549\u2013553.","journal-title":"IEEE Signal Processing Letters"},{"issue":"4","key":"8423_CR46","doi-asserted-by":"publisher","first-page":"3170","DOI":"10.1109\/TVT.2016.2594706","volume":"66","author":"H Xie","year":"2016","unstructured":"Xie, H., Gao, F., Zhang, S., & Jin, S. (2016). A unified transmission strategy for TDD\/FDD massive MIMO systems with spatial basis expansion model. IEEE Transactions on Vehicular Technology, 66(4), 3170\u20133184.","journal-title":"IEEE Transactions on Vehicular Technology"},{"issue":"2","key":"8423_CR47","doi-asserted-by":"publisher","first-page":"68","DOI":"10.1109\/JSAC.1987.1146536","volume":"5","author":"S Stein","year":"1987","unstructured":"Stein, S. (1987). Fading channel issues in system engineering. IEEE Journal on Selected Areas in Communications, 5(2), 68\u201389.","journal-title":"IEEE Journal on Selected Areas in Communications"},{"issue":"3","key":"8423_CR48","doi-asserted-by":"publisher","first-page":"502","DOI":"10.1109\/26.837052","volume":"48","author":"D-S Shiu","year":"2000","unstructured":"Shiu, D.-S., Foschini, G. J., Gans, M. J., & Kahn, J. M. (2000). Fading correlation and its effect on the capacity of multielement antenna systems. IEEE Transactions on Communications, 48(3), 502\u2013513.","journal-title":"IEEE Transactions on Communications"},{"key":"8423_CR49","unstructured":"Molisch, A. F. (2012). Wireless communications. Wiley."},{"issue":"4","key":"8423_CR50","doi-asserted-by":"publisher","first-page":"2323","DOI":"10.1007\/s11277-015-2350-1","volume":"82","author":"MQ Abdulhasan","year":"2015","unstructured":"Abdulhasan, M. Q., Salman, M. I., Ng, C. K., Noordin, N. K., Hashim, S. J., & Hashim, F. (2015). An adaptive threshold feedback compression scheme based on channel quality indicator (cqi) in long term evolution (lte) system. Wireless Personal Communications, 82(4), 2323\u20132349.","journal-title":"Wireless Personal Communications"},{"key":"8423_CR51","doi-asserted-by":"crossref","unstructured":"Abdulhasan, M.Q., Salman, M.I., Ng, C.K., Noordin, N.K., Hashim, S.J., & Hashim, F.B. (2013). Approximate linear minimum mean square error estimation based on channel quality indicator feedback in LTE systems. In 2013 IEEE 11th Malaysia international conference on communications (MICC). IEEE (pp. 446\u2013451).","DOI":"10.1109\/MICC.2013.6805871"},{"key":"8423_CR52","doi-asserted-by":"crossref","unstructured":"Abdulhasan, M.Q., Salman, M.I., Ng, C.K., Noordin, N.K., Hashim, S.J., & Hashim, F.B. (2013). A channel quality indicator (CQI) prediction scheme using feed forward neural network (FF-NN) technique for MU-MIMO LTE system. In 2014 IEEE 2nd international symposium on telecommunication technologies (ISTT). IEEE, 2014 (pp. 17\u201322).","DOI":"10.1109\/ISTT.2014.7238169"},{"issue":"6","key":"8423_CR53","doi-asserted-by":"publisher","first-page":"1848","DOI":"10.3837\/tiis.2014.06.002","volume":"8","author":"MQ Abdulhasan","year":"2014","unstructured":"Abdulhasan, M. Q., Salman, M. I., Ng, C. K., Noordin, N. K., Hashim, S. J., & Hashim, F. (2014). Review of channel quality indicator estimation schemes for multi-user MIMO in 3GPP LTE\/LTE-A systems. KSII Transactions on Internet & Information Systems, 8(6), 1848\u20131868.","journal-title":"KSII Transactions on Internet & Information Systems"},{"key":"8423_CR54","doi-asserted-by":"publisher","first-page":"108","DOI":"10.1016\/j.comnet.2016.09.004","volume":"112","author":"MI Salman","year":"2017","unstructured":"Salman, M. I., Abdulhasan, M. Q., Ng, C. K., Noordin, N. K., Ali, B. M., & Sali, A. (2017). A partial feedback reporting scheme for LTE mobile video transmission with QoS provisioning. Computer Networks, 112, 108\u2013121.","journal-title":"Computer Networks"},{"key":"8423_CR55","unstructured":"Kay, S. (1993). Fundamentals of Statistical Signal Processing: Estimation Theory. Prentice-Hall."},{"key":"8423_CR56","doi-asserted-by":"crossref","unstructured":"Goldsmith, A. (2005). Wireless communications. Cambridge University Press.","DOI":"10.1017\/CBO9780511841224"},{"issue":"3","key":"8423_CR57","doi-asserted-by":"publisher","first-page":"884","DOI":"10.1109\/TSP.2005.863008","volume":"54","author":"M Biguesh","year":"2006","unstructured":"Biguesh, M., & Gershman, A. B. (2006). Training-based MIMO channel estimation: a study of estimator tradeoffs and optimal training signals. IEEE Transactions on Signal Processing, 54(3), 884\u2013893.","journal-title":"IEEE Transactions on Signal Processing"},{"issue":"3","key":"8423_CR58","doi-asserted-by":"publisher","first-page":"257","DOI":"10.4103\/0256-4602.113526","volume":"30","author":"MI Salman","year":"2013","unstructured":"Salman, M. I., Abdulhasan, M. Q., Ng, C. K., Noordin, N. K., Sali, A., & Mohd Ali, B. (2013). Radio resource management for green 3g pp long term evolution cellular networks: Review and trade-offs. IETE Technical Review, 30(3), 257\u2013269.","journal-title":"IETE Technical Review"},{"issue":"15","key":"8423_CR59","first-page":"1704","volume":"7","author":"KB Petersen","year":"2008","unstructured":"Petersen, K. B., & Michael, S. P. (2008). The matrix cookbook. University of Denmark, 7(15), 1704\u20131714.","journal-title":"University of Denmark"},{"issue":"3","key":"8423_CR60","doi-asserted-by":"publisher","first-page":"321","DOI":"10.1109\/JSAC.2003.809457","volume":"21","author":"D Chizhik","year":"2003","unstructured":"Chizhik, D., Ling, J., Wolniansky, P. W., Valenzuela, R. A., Costa, N., & Huber, K. (2003). Multiple-input-multiple-output measurements and modeling in manhattan. IEEE Journal on Selected Areas in Communications, 21(3), 321\u2013331.","journal-title":"IEEE Journal on Selected Areas in Communications"},{"issue":"3","key":"8423_CR61","doi-asserted-by":"publisher","first-page":"655","DOI":"10.1109\/TVT.2004.827164","volume":"53","author":"K Yu","year":"2004","unstructured":"Yu, K., Bengtsson, M., Ottersten, B., McNamara, D., Karlsson, P., & Beach, M. (2004). Modeling of wide-band MIMO radio channels based on NLoS indoor measurements. IEEE Transactions on Vehicular Technology, 53(3), 655\u2013665.","journal-title":"IEEE Transactions on Vehicular Technology"},{"key":"8423_CR62","doi-asserted-by":"crossref","unstructured":"Wallace, J. W., & Jensen, M. A. (2001). Measured characteristics of the MIMO wireless channel. In IEEE 54th vehicular technology conference. VTC Fall 2001, (Vol. 4, pp. 2038\u20132042).","DOI":"10.1109\/VTC.2001.957102"},{"issue":"7","key":"8423_CR63","doi-asserted-by":"publisher","first-page":"3899","DOI":"10.1109\/TWC.2015.2414413","volume":"14","author":"X Gao","year":"2015","unstructured":"Gao, X., Edfors, O., Rusek, F., & Tufvesson, F. (2015). Massive MIMO performance evaluation based on measured propagation data. IEEE Transactions on Wireless Communications, 14(7), 3899\u20133911.","journal-title":"IEEE Transactions on Wireless Communications"},{"key":"8423_CR64","doi-asserted-by":"crossref","unstructured":"Jakes, W.C., & Cox, D.C. (1994). Microwave mobile communications. Wiley-IEEE Press","DOI":"10.1109\/9780470545287"},{"issue":"3","key":"8423_CR65","doi-asserted-by":"publisher","first-page":"1834","DOI":"10.1109\/TWC.2017.2655515","volume":"16","author":"HQ Ngo","year":"2017","unstructured":"Ngo, H. Q., Ashikhmin, A., Yang, H., Larsson, E. G., & Marzetta, T. L. (2017). Cell-free massive MIMO versus small cells. IEEE Transactions on Wireless Communications, 16(3), 1834\u20131850.","journal-title":"IEEE Transactions on Wireless Communications"},{"key":"8423_CR66","unstructured":"Pouttu, A., Burkhardt, F., Patachia, C., Mendes, L., Brazil, G.R., Pirttikangas, S., Jou, E., Kuvaja, P., Finland, F.T., Heikkil\u00e4 et\u00a0al. M. (2020). 6G white paper on validation and trials for verticals towards 2030s1. preprint"}],"container-title":["Wireless Personal Communications"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s11277-021-08423-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s11277-021-08423-1\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s11277-021-08423-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,8,27]],"date-time":"2021-08-27T20:04:54Z","timestamp":1630094694000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s11277-021-08423-1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,4,14]]},"references-count":66,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2021,8]]}},"alternative-id":["8423"],"URL":"https:\/\/doi.org\/10.1007\/s11277-021-08423-1","relation":{},"ISSN":["0929-6212","1572-834X"],"issn-type":[{"value":"0929-6212","type":"print"},{"value":"1572-834X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,4,14]]},"assertion":[{"value":"22 March 2021","order":1,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"14 April 2021","order":2,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}}]}}