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Notably, a series of evolutionary advancements and revolutionary trends have begun to materialize in recent years, envisioned to redefine the landscape of future 6G wireless systems and networks. In particular, the capabilities and performance of future massive MIMO systems will be amplified through the incorporation of cutting-edge technologies, structures, and strategies. These include intelligent omni-surfaces (IOSs)\/intelligent reflecting surfaces (IRSs), artificial intelligence (AI), Terahertz (THz) communications, and cell-free architectures. In addition, an array of diverse applications built on the foundation of massive MIMO will continue to proliferate and thrive. These encompass wireless localization and sensing, vehicular communications, non-terrestrial communications, remote sensing, and inter-planetary communications, among others.<\/jats:p>","DOI":"10.3390\/s23136062","type":"journal-article","created":{"date-parts":[[2023,7,3]],"date-time":"2023-07-03T00:53:16Z","timestamp":1688345596000},"page":"6062","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":82,"title":["Technology Trends for Massive MIMO towards 6G"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3924-227X","authenticated-orcid":false,"given":"Yiming","family":"Huo","sequence":"first","affiliation":[{"name":"Department of Electrical and Computer Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2496-1597","authenticated-orcid":false,"given":"Xingqin","family":"Lin","sequence":"additional","affiliation":[{"name":"NVIDIA, Santa Clara, CA 95050, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3484-1361","authenticated-orcid":false,"given":"Boya","family":"Di","sequence":"additional","affiliation":[{"name":"School of Electronics, Peking University, Beijing 100871, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3393-8612","authenticated-orcid":false,"given":"Hongliang","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Electronics, Peking University, Beijing 100871, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3114-7008","authenticated-orcid":false,"given":"Francisco Javier Lorca","family":"Hernando","sequence":"additional","affiliation":[{"name":"InterDigital Communications, Inc., London EC2A 3QR, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2412-4716","authenticated-orcid":false,"given":"Ahmet Serdar","family":"Tan","sequence":"additional","affiliation":[{"name":"InterDigital Communications, Inc., London EC2A 3QR, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6364-6149","authenticated-orcid":false,"given":"Shahid","family":"Mumtaz","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, 3810-193 Aveiro, Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9059-2799","authenticated-orcid":false,"given":"\u00d6zlem Tu\u011ffe","family":"Demir","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, TOBB University of Economics and Technology, Ankara 06510, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2221-6924","authenticated-orcid":false,"given":"Kun","family":"Chen-Hu","sequence":"additional","affiliation":[{"name":"Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911 Legan\u00e9s, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,6,30]]},"reference":[{"key":"ref_1","unstructured":"Rajatheva, N., Atzeni, I., Bjornson, E., and Bourdoux, A. 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