Performance Analysis of STBC and precoded STBC in MIMO using ZF and MMSE Equalization
نویسندگان
چکیده
Alamouti code is a simple space-time code that can be used for transmit diversity systems. This is a class of easily decoded space-time codes that achieve full diversity order in Rayleigh fading channels. Alamouti code exist only for certain numbers of transmit antennas and do not provide array gain like diversity techniques that exploit transmit channel information. When Channel State Information (CSI) is available at the transmitter, though, precoding the space-time codeword can be used to support different numbers of transmit antennas. The objective of the proposed work is to design a precoded STBC system to achieve better transmit diversity and shows comparison of bit error rate (BER) performance of Precoded Alamouti and Precoded OSTBC in Zero Forcing and MMSE equalization techniques. The Rayleigh fading channel is used as modulation channel. Keywords—Alamouti, CSI, MIMO, MMSE OSTBC, Precoding, ZF.
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