期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2012
卷号：2
期号：3
页码：37-40
出版社：International Journal of Soft Computing & Engineering
摘要：A detailed analysis of 2×2 MIMO (Multiple Input Multiple Output) combined with OFDM (Orthogonal Frequency Division Multiplexing) transmission system and BPSK modulation has been carried out. The BER performance of the system has been determined for Additive white Gaussian Noise (AWGN) presuming Flat fading Rayleigh channel. On the receiver side linear equalization techniques such as Zero Force Equalizer (ZF) and Minimum Mean Square Error (MMSE) detectors were employed for studying the BER performance. The simulation results show that for BER of ~10-4, the SNR required are ~34 dB for ZF equalizer and ~31dB for MMSE equalizer. The simulation results indicate that the MMSE equalizer shows better performance ~3 dB over the ZF equalizer. Further comparison of the 2X2 MIMO performance of OFDM with STBC multiplexing indicates comparable BER performances. The simulation results are presented and discussed in the paper. Key Words: Multiple Input Multiple Output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM), Space Time Block Coding (STBC), Binary Phase Shift Keying (BPSK), Bit Error Rate (BER), Signal to Noise Ratio (SNR), Zero Force Equalizer (ZFE) and Minimum Mean Square Error (MMSE).
