Performance Analysis of MIMO Space Diversity Technique for Wireless Communications
Vibhav Kumar Sachan, Ankur Gupta and Avinash Kumar
Space diversity technique is an attractive solution for improving quality in wireless links. The objectives of this paper are to investigate the impact of bit error rate on the number of users and the SNR for space time block coded MIMO Rayleigh fading channels. Diversity is a technique used to combat multipath-fading. Space Diversity is a technique in which multiple numbers of antennas are used at transmitter and receiver side. As far as detection techniques are concerned, we have used two detection techniques (a) joint minimum mean square error (JMMSE) (b) maximal receive ratio combining (MRRC). Furthermore, the usage of higher order diversity schemes not only provides the superior performance over lower order schemes, but also offers an opportunity for the service provider to accommodate more number of users. Simulation results are included.
Keywords: Bit error rate, joint minimum mean square error (JMMSE), maximal receive ratio combining (MRRC), Inter symbol interference, space diversity.