A Comprehensive Literature Survey on Antenna Selection in MIMO for Future Generation Wireless Systems

The multiple-input multiple-output (MIMO) architecture has been demonstrated to be an effective means to boost the capacity of wireless communication systems, and has evolved to become an inherent component of various wireless standards, including the next-generation cellular systems 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE), LTE advanced and Cognitive Radio. This paper provides the broader information about the research efforts in recent years regarding the Antenna Selection (AS) techniques in MIMO and its impact on the system capacity as well as the received SNR. The impact of AS on the system performance varies depending on the selection criterion, underlying space-time (ST) code and channel model. The metrics that are normally considered in the performance analysis are the 'system capacity', the 'spatial diversity gain'(or diversity order) of the system, as well as the 'loss in coding gain' due to antenna selection. The review of several antenna selection techniques for Transmit Antenna Selection (TAS) & Receive Antenna Selection (RAS) is provided with respect to different performance metrics. The issues related to closely spaced antennas such as correlated fading and mutual coupling are also discussed in the view of AS.