Microsoft Word - WCE2011_Azlina_2011.03_ok.2011.04.05

Multiple input multiple output (MIMO) communication systems with orthogonal frequency division multiplexing (OFDM) modulation have a great potential to play an important part in the design of the next generation broadband wireless communication system. In this paper, the bit error rate (BER) performance using linear maximum likelihood alamouti combiner (LMLAC) decoding technique for space time frequency block codes (STFBC) MIMO-OFDM system with frequency offset (FO) is being evaluated to provide the system with low complexity and maximum diversity. As will be shown, the performance of diversity system depends on maximum diversity combiner decoder technique with low complexity and achieves maximum diversity order compare to the maximum likelihood (ML) and other LMLAC decoder techniques.