Closed-Form Symbol Error Rate of Multiantenna Selection System with Multiuser Diversity

In this paper, a framework to study the error performance of multiuser diversity in point-to-multipoint (PMP) MIMO transmit antenna selection networks is presented. Based on this framework, we derive the exact closed-form symbol error rate formula in terms of antenna selection gain, MIMO configurations, multiuser diversity and amount of fading gain to study the insight interaction between these factors. Our analytical results indicate that, (1) in PMP MIMO antenna selection system with large number of receive antenna, a diversity order equals to the product of the number of transmit antennas, receive antennas and users can be extracted; (2) the number of users provides the same effect on the error performance as that of the transmit antenna, and users can be viewed as "virtual" transmit antennas which is the inherent multiuser diversity; and (3) largest performance gain is achieved by equally distributing antennas over transmit and receive ends.