Dala Pegorara Souto V, Dester PS, Soares Pereira Facina M, Gomes Silva D, de Figueiredo FAP, Rodrigues de Lima Tejerina G, Silveira Santos Filho JC, Silveira Ferreira J, Mendes LL, Souza RD, Cardieri P. Emerging MIMO Technologies for 6G Networks.
SENSORS (BASEL, SWITZERLAND) 2023;
23:s23041921. [PMID:
36850518 PMCID:
PMC9961246 DOI:
10.3390/s23041921]
[Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/03/2023] [Accepted: 02/05/2023] [Indexed: 05/27/2023]
Abstract
The demand for wireless connectivity has grown exponentially over the last years. By 2030 there should be around 17 billion of mobile-connected devices, with monthly data traffic in the order of thousands of exabytes. Although the Fifth Generation (5G) communications systems present far more features than Fourth Generation (4G) systems, they will not be able to serve this growing demand and the requirements of innovative use cases. Therefore, Sixth Generation (6G) Networks are expected to support such massive connectivity and guarantee an increase in performance and quality of service for all users. To deal with such requirements, several technical issues need to be addressed, including novel multiple-antenna technologies. Then, this survey gives a concise review of the main emerging Multiple-Input Multiple-Output (MIMO) technologies for 6G Networks such as massive MIMO (mMIMO), extremely large MIMO (XL-MIMO), Intelligent Reflecting Surfaces (IRS), and Cell-Free mMIMO (CF-mMIMO). Moreover, we present a discussion on how some of the expected key performance indicators (KPIs) of some novel 6G Network use cases can be met with the development of each MIMO technology.
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