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DOI: 10.1109\/OJCOMS.2021. 3057679 10.1109\/OJCOMS.2021.3057679","DOI":"10.1109\/OJCOMS.2021.3057679"},{"key":"5","doi-asserted-by":"publisher","unstructured":"[5] E. Dahlman, G. Mildh, S. Parkvall, P. Persson, G. Wikstr\u00f6m, and H. Mura, \u201c5G evolution and beyond,\u201d Trans. IEICE Commun., vol.E104-B, no.9, pp.984-991, Sept. 2021. DOI: 10.1587\/transcom. 2020FGI0001 10.1587\/transcom.2020fgi0001","DOI":"10.1587\/transcom.2020FGI0001"},{"key":"6","doi-asserted-by":"publisher","unstructured":"[6] I.F. Akyildiz, J.M. Jornet, and C. Han, \u201cTerahertz band: Next frontier for wireless communications,\u201d Phys. Commun., vol.12, no.2, pp.16-32, Sept. 2014. DOI: 10.1016\/J.PHYCOM.2014.01.006 10.1016\/j.phycom.2014.01.006","DOI":"10.1016\/j.phycom.2014.01.006"},{"key":"7","doi-asserted-by":"publisher","unstructured":"[7] K. Sengupta, T. Nagatsuma, and D.M. Mittleman, \u201cTerahertz integrated electronic and hybrid electronic-photonic systems,\u201d Nature Electron., vol.1, no.12, pp.622-635, Dec. 2018. DOI: 10.1038\/s41928-018-0173-2 10.1038\/s41928-018-0173-2","DOI":"10.1038\/s41928-018-0173-2"},{"key":"8","doi-asserted-by":"publisher","unstructured":"[8] T. Kawanishi, \u201cTHz and photonic seamless communications,\u201d IEEE\/OSA J. Light. Technol., vol.37, no.7, pp.1671-1679, April 2019. DOI: 10.1109\/JLT.2019.2897042 10.1109\/jlt.2019.2897042","DOI":"10.1109\/JLT.2019.2897042"},{"key":"9","doi-asserted-by":"publisher","unstructured":"[9] T.S. Rappaport, Y. Xing, O. Kanhere, S. Ju, A. Madanayake, S. Mandal, A. Alkhateeb, and G.C. Trichopoulos, \u201cWireless communications and applications above 100GHz: Opportunities and challenges for 6G and beyond,\u201d IEEE Access, vol.7, pp.78729-78757, June 2019. DOI: 10.1109\/ACCESS.2019.2921522 10.1109\/access.2019.2921522","DOI":"10.1109\/ACCESS.2019.2921522"},{"key":"10","doi-asserted-by":"publisher","unstructured":"[10] M. Di Renzo, A. Zappone, M. Debbah, M.-S. Alouini, C. Yuen, J. Rosny, and S. Tretyakov, \u201cSmart radio environments empowered by reconfigurable intelligent surfaces: How it works, state of research, and the road ahead,\u201d IEEE J. Sel. Areas Commun., vol.38, no.11, pp.2450-2525, Nov. 2020. DOI: 10.1109\/JSAC.2020.3007211 10.1109\/jsac.2020.3007211","DOI":"10.1109\/JSAC.2020.3007211"},{"key":"11","doi-asserted-by":"publisher","unstructured":"[11] C. Liaskos, S. Nie, A. Tsioliaridou, A. Pitsillides, S. Ioannidis, and I. Akyildiz, \u201cA new wireless communication paradigm through software-controlled metasurfaces,\u201d IEEE Commun. Mag., vol.56, no.9, pp.162-169, Sept. 2018. DOI: 10.1109\/MCOM.2018.1700659 10.1109\/mcom.2018.1700659","DOI":"10.1109\/MCOM.2018.1700659"},{"key":"12","doi-asserted-by":"publisher","unstructured":"[12] M. Di Renzo, M. Debbah, D.-T. Phan-Huy, A. Zappone, M.-S. Alouini, C. Yuen, V. Sciancalepore, G.C. Alexandropoulos, J. Hoydis, H. Gacanin, J. de Rosny, A. Bounceur, G. Lerosey, and M. Fink, \u201cSmart radio environments empowered by reconfigurable AI meta-surfaces: An idea whose time has come,\u201d EURASIP J. Wireless Commun. Netw., vol.2019, no.129, pp.1-20, May 2019. DOI: 10.1186\/s13638-019-1438-9 10.1186\/s13638-019-1438-9","DOI":"10.1186\/s13638-019-1438-9"},{"key":"13","doi-asserted-by":"publisher","unstructured":"[13] E. Basar, M. Di Renzo, J. de Rosny, M. Debbah, M.-S. Alouini, and R. Zhang, \u201cWireless communications through reconfigurable intelligent surfaces,\u201d IEEE Access, vol.7, pp.116753-116773, Aug. 2019. DOI: 10.1109\/ACCESS.2019.2935192 10.1109\/access.2019.2935192","DOI":"10.1109\/ACCESS.2019.2935192"},{"key":"14","doi-asserted-by":"publisher","unstructured":"[14] Q. Wu and R. Zhang, \u201cTowards smart and reconfigurable environment: Intelligent reflecting surface aided wireless network,\u201d IEEE Commun. Mag., vol.58, no.1, pp.106-112, Jan. 2020. DOI: 10.1109\/MCOM.001.1900107 10.1109\/mcom.001.1900107","DOI":"10.1109\/MCOM.001.1900107"},{"key":"15","doi-asserted-by":"publisher","unstructured":"[15] E. Bj\u00f6rnson, \u00d6. \u00d6zdogan, and E.G. Larsson, \u201cReconfigurable intelligent surfaces: Three myths and two critical questions,\u201d IEEE Commun. Mag., vol.58, no.12, pp.90-96, Dec. 2020. DOI: 10.1109\/MCOM.001.2000407 10.1109\/mcom.001.2000407","DOI":"10.1109\/MCOM.001.2000407"},{"key":"16","doi-asserted-by":"publisher","unstructured":"[16] C. Pan, H. Ren, K. Wang, J.F. Kolb, M. Elkashlan, M. Chen, M. Di Renzo, Y. Hao, J. Wang, A.L. Swindlehurst, X. You, and L. Hanzo, \u201cReconfigurable intelligent surfaces for 6G systems: Principles, applications, and research directions,\u201d IEEE Commun. Mag., vol.59, no.6, pp.14-20, June 2021. DOI: 10.1109\/MCOM.001.2001076 10.1109\/mcom.001.2001076","DOI":"10.1109\/MCOM.001.2001076"},{"key":"17","doi-asserted-by":"publisher","unstructured":"[17] Y. Zhu, B. Mao, Y. Kawamoto, and N. Kato, \u201cIntelligent reflecting surface-aided vehicular networks toward 6G: Vision, proposal, and future directions,\u201d IEEE Veh. Technol. Mag., vol.16, no.4, pp.48-56, Dec. 2021. DOI: 10.1109\/MVT.2021.3113890 10.1109\/mvt.2021.3113890","DOI":"10.1109\/MVT.2021.3113890"},{"key":"18","doi-asserted-by":"publisher","unstructured":"[18] R. Liu, Q. Wu, M. Di Renzo, and Y. Yuan, \u201cA path to smart radio environments: An industrial viewpoint on reconfigurable intelligent surfaces,\u201d IEEE Wireless Commun., vol.29, no.1, pp.202-208, Feb. 2022. DOI: 10.1109\/MWC.111.2100258 10.1109\/mwc.111.2100258","DOI":"10.1109\/MWC.111.2100258"},{"key":"19","doi-asserted-by":"publisher","unstructured":"[19] E. Bj\u00f6rnson, H. Wymeersch, B. Matthiesen, P. Popovski, L. Sanguinetti, and E. de Carvalho, \u201cReconfigurable intelligent surfaces: A signal processing perspective with wireless applications,\u201d IEEE Signal Process. Mag., vol.39, no.2, pp.135-158, March 2022. DOI: 10.1109\/MSP.2021.3130549 10.1109\/msp.2021.3130549","DOI":"10.1109\/MSP.2021.3130549"},{"key":"20","unstructured":"[20] V. Arun and H. Balakrishnan, \u201cRFocus: Beamforming using thousands of passive antennas,\u201d Proc. USENIX Symp. Networked Syst. Design Implement., pp.1047-1061, Feb. 2020."},{"key":"21","doi-asserted-by":"publisher","unstructured":"[21] X. Pei, H. Yin, L. Tan, L. Cao, Z. Li, K. Wang, K. Zhang, and E. Bj\u00f6rnson, \u201cRIS-aided wireless communications: Prototyping, adaptive beamforming, and indoor\/outdoor field trials,\u201d IEEE Trans. Commun., vol.69, no.12, pp.8627-8640, Dec. 2021. DOI: 10.1109\/TCOMM.2021.3116151 10.1109\/tcomm.2021.3116151","DOI":"10.1109\/TCOMM.2021.3116151"},{"key":"22","doi-asserted-by":"publisher","unstructured":"[22] D. Kitayama, Y. Hama, K. Goto, K. Miyachi, T. Motegi, and O. Kagaya, \u201cTransparent dynamic metasurface for a visually unaffected reconfigurable intelligent surface: Controlling transmission\/reflection and making a window into an RF lens,\u201d Opt. Express, vol.29, no.18, pp.29292-29307, Aug. 2021. DOI: 10.1364\/OE.435648 10.1364\/oe.435648","DOI":"10.1364\/OE.435648"},{"key":"23","doi-asserted-by":"publisher","unstructured":"[23] B. Zheng and R. Zhang, \u201cIntelligent reflecting surface-enhanced OFDM: Channel estimation and reflection optimization,\u201d IEEE Wireless Commun. Lett., vol.9, no.4, pp.518-522, April 2020. DOI: 10.1109\/LWC.2019.2961357 10.1109\/lwc.2019.2961357","DOI":"10.1109\/LWC.2019.2961357"},{"key":"24","unstructured":"[24] X. Hou, X. Li, X. Wang, L. Chen, and S. Suyama, \u201cSome observations and thoughts about reconfigurable intelligent surface application for 5G evolution and 6G,\u201d ZTE Communications, vol.20, no.1, pp.14-20, March 2022. DOI: 10.12142\/ZTECOM.202201003 10.12142\/ZTECOM.202201003"},{"key":"25","doi-asserted-by":"publisher","unstructured":"[25] M. Iwabuchi, T. Murakami, R. Ohmiya, T. Ogawa, Y. Takatori, D. Kitayama, Y. Kishiyama, and T. Asai, \u201cIntelligent radio-wave design: Distributed intelligent reflecting surface with direction-based control for millimeter-wave communications,\u201d Proc. 2020 International Conference on Emerging Technologies for Communications (ICETC 2020), IA2-2, Dec. 2020. DOI: 10.34385\/proc.63.IA2-2 10.34385\/proc.63.IA2-2","DOI":"10.34385\/proc.63.IA2-2"},{"key":"26","doi-asserted-by":"crossref","unstructured":"[26] S.L.H. Nguyen, J. J\u00e4rvel\u00e4inen, A. Karttunen, K. Haneda, and J. Putkonen, \u201cComparing radio propagation channels between 28 and 140GHz bands in a shopping mall,\u201d 12th European Conference on Antennas and Propagation (EuCAP 2018), April 2018. DOI: 10.1049\/cp.2018.0874 10.1049\/cp.2018.0874","DOI":"10.1049\/cp.2018.0874"},{"key":"27","doi-asserted-by":"publisher","unstructured":"[27] S. Ju, Y. Xing, O. Kanhere, and T.S. Rappaport, \u201cMillimeter wave and sub-Terahertz spatial statistical channel model for an indoor office building,\u201d IEEE J. Sel. Areas Commun., vol.39, no.6, pp.1561-1575, June 2021. DOI: 10.1109\/JSAC.2021.3071844 10.1109\/jsac.2021.3071844","DOI":"10.1109\/JSAC.2021.3071844"},{"key":"28","doi-asserted-by":"publisher","unstructured":"[28] J. Gomez-Ponce, N.A. Abbasi, A.E. Willner, C.J. Zhang, and A.F. Molisch, \u201cDirectionally resolved measurement and modeling of THz band propagation channels,\u201d IEEE Open J. Antennas Propag., vol.3, pp.663-686, June 2021. DOI: 10.1109\/OJAP.2022.3181326 10.1109\/ojap.2022.3181326","DOI":"10.1109\/OJAP.2022.3181326"},{"key":"29","doi-asserted-by":"crossref","unstructured":"[29] S. Ju, Y. Xing, O. Kanhere, and T.S. Rappaport, \u201cSub-terahertz channel measurements and characterization in a factory building,\u201d Proc. IEEE Int. Commun. Conf. (ICC), May 2022. DOI: 10.1109\/ICC45855.2022.9838910 10.1109\/icc45855.2022.9838910","DOI":"10.1109\/ICC45855.2022.9838910"},{"key":"30","unstructured":"[30] Press release from NTT DOCOMO on Jan. 24, 2020. https:\/\/www.docomo.ne.jp\/english\/info\/media_center\/pr\/2020\/0124_00.html"},{"key":"31","unstructured":"[31] NTT DOCOMO, \u201cWhite paper: 5G evolution and 6G (version 5.0),\u201d Jan. 2023. https:\/\/www.docomo.ne.jp\/english\/binary\/pdf\/corporate\/technology\/whitepaper_6g\/DOCOMO_6G_White_PaperEN_v5.0.pdf"},{"key":"32","unstructured":"[32] M. Iwabuchi, S. Suyama, T. Arai, M. Nakamura, K. Goto, R. Ohmiya, D. Uchida, T. Yamada, and T. Ogawa, \u201cConcept and issues of new radio network topology for 5G evolution &amp; 6G,\u201d IEICE Technical Report, RCS2022-148, Oct. 2022."},{"key":"33","doi-asserted-by":"publisher","unstructured":"[33] S. Suyama, T. Okuyama, Y. Kishiyama, S. Nagata, and T. Asai, \u201cA study on extreme wideband 6G radio access technologies for achieving 100Gbps data rate in higher frequency bands,\u201d IEICE Trans. Commun., vol.E104-B, no.9, pp.992-999, Sept. 2021. DOI: 10.1587\/transcom.2020FGI0002 10.1587\/transcom.2020fgi0002","DOI":"10.1587\/transcom.2020FGI0002"},{"key":"34","unstructured":"[34] H. Fukuzono, S. Suyama, D. Lee, D. Uchida, T. Okuyama, M. Iwabuchi, J. Mashino, and Y. Kishiyama, \u201cIssues of sub-terahertz-band radio access technologies for 6G,\u201d IEICE Technical Report, RCS2021-180, Dec. 2021."},{"key":"35","unstructured":"[35] S. Suyama, T. Okuyama, N. Nonaka, and T. Asai, \u201cNTT DOCOMO&apos;s activities for utilization of sub-terahertz wave in 6G,\u201d IEICE General Conf., CI-7-6, March 2022."},{"key":"36","unstructured":"[36] H. Fukuzono, K. Kuriyama, D. Uchida, M. Yoshioka, T. Miyagi, T. Onizawa, S. Suyama, T. Okuyama, and Y. Kishiyama, \u201cExperimental evaluation of LLRs for nonlinearly distorted constellations on single-carrier transmission in a 97GHz band,\u201d IEICE General Conf., B-5-37, March 2022."},{"key":"37","doi-asserted-by":"crossref","unstructured":"[37] S. Suyama, T. Okuyama, N. Nonaka, and T. Asai, \u201cRecent studies on massive MIMO technologies for 5G evolution and 6G,\u201d IEEE Radio and Wireless Symposium (RWS), pp.90-93, Jan. 2022. DOI: 10.1109\/RWS53089.2022.9719949 10.1109\/rws53089.2022.9719949","DOI":"10.1109\/RWS53089.2022.9719949"},{"key":"38","unstructured":"[38] Press release from NTT DOCOMO on June 6, 2022. https:\/\/www.docomo.ne.jp\/english\/info\/media_center\/pr\/2022\/0606_00.html"},{"key":"39","doi-asserted-by":"crossref","unstructured":"[39] M. Nakamura, S. Suyama, K. Kitao, T. Tomie, M. Inomata, W. Yamada, N. Kuno, and M. Sasaki, \u201cMeasurement of multipath waves at 160GHz and 300GHz in an indoor conference room,\u201d EuCAP2023, March 2023. 10.23919\/eucap57121.2023.10133095","DOI":"10.23919\/EuCAP57121.2023.10133095"},{"key":"40","unstructured":"[40] Beyond 5G Promotion Consortium, \u201cBeyond 5G white paper \u2014 Message to the 2030s \u2014 (version 1.51),\u201d Oct. 2022. https:\/\/b5g.jp\/doc\/whitepaper_en_1-51.pdf"},{"key":"41","doi-asserted-by":"publisher","unstructured":"[41] M.K. Samimi and T.S. Rappaport, \u201c3-D millimeter-wave statistical channel model for 5G wireless system design,\u201d IEEE Trans. Microw. Theory Techn., vol.64, no.7, pp.2207-2225, July 2016. DOI: 10.1109\/TMTT.2016.2574851 10.1109\/tmtt.2016.2574851","DOI":"10.1109\/TMTT.2016.2574851"},{"key":"42","doi-asserted-by":"publisher","unstructured":"[42] Y. Ogawa, T. Utsuno, T. Nishimura, T. Ohgane, and T. Sato, \u201cSub-terahertz MIMO spatial multiplexing in indoor propagation environments,\u201d IEICE Trans. Commun., vol.E105-B, no.10, pp.1130-1138, Oct. 2022. DOI: 10.1587\/transcom.2021MEI0004 10.1587\/transcom.2021mei0004","DOI":"10.1587\/transcom.2021MEI0004"},{"key":"43","doi-asserted-by":"crossref","unstructured":"[43] L. Chen, Y. Yang, X. Chen, and W. Wang, \u201cMulti-stage beamforming codebook for 60GHz WPAN,\u201d Proc. 6th Int. ICST Conf. Commun. Network. China, pp.361-365, Aug. 2011. DOI: 10.1109\/ChinaCom.2011.6158179 10.1109\/chinacom.2011.6158179","DOI":"10.1109\/ChinaCom.2011.6158179"},{"key":"44","doi-asserted-by":"publisher","unstructured":"[44] A. Alkhateeb, O.E. Ayach, G. Leus, and R.W. Heath, \u201cChannel estimation and hybrid precoding for millimeter wave cellular systems,\u201d IEEE J. Sel. Top. Signal Process., vol.8, no.5, pp.831-846, Oct. 2014. DOI: 10.1109\/JSTSP.2014.2334278 10.1109\/jstsp.2014.2334278","DOI":"10.1109\/JSTSP.2014.2334278"},{"key":"45","doi-asserted-by":"crossref","unstructured":"[45] S. Gao, T. Dong, C. Chen, and Y. Jin, \u201cHierarchical beam selection in mmWave multiuser MIMO systems with one-bit analog phase shifters,\u201d Proc. 2016 8th International Conference on Wireless Communications &amp; Signal Processing (WCSP), Oct. 2016. 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