Realistic performance and complexity of multi-antenna wireless communications systems

Authors:
Constantin Siriteanu;Yoshikazu Miyanaga
Affiliations:
Hokkaido University, Sapporo, Japan;Hokkaido University, Sapporo, Japan
Venue:
Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication
Year:
2011

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Abstract

Multi-antenna transceivers can enhance transmission reliability, data rate, and user capacity. They are thus essential in future ubiquitous networks that connect us to personal devices and the internet. This paper demonstrates the dramatic effects of actual propagation conditions on transceiver performance and complexity. Propagation is parameterized by the azimuth spread (AS) and Rician K-factor, which determine the channel spatial statistics. As receiver combining method we select maximal-ratio eigencombining (MREC), also known as eigenbeamforming. For MREC, we have recently derived a convenient average error probability expression applicable to Rayleigh or Rician fading channels with spatially-correlated fading and estimated channel state information (CSI). We average numerically this expression over realistic AS and K distributions for measured indoor, sub/urban, and rural scenarios. Numerical results are shown for estimated Rayleigh and Rician fading, fixed and random K, and various AS--K correlation values.