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Space-Time Transmit Diversity Combined with Frequency-domain Equalization for Single-carrier Transmission

In a frequency-selective fading channel, the transmission performance of single-carrier (SC) transmission significantly degrades due to severe inter-symbol-interference (ISI). In this paper, the joint use of space-time transmit diversity (STTD), receive antenna diversity and frequency-domain minimum mean square error (MMSE) equalization in SC transmission is studied. Space-time encoding and decoding for frequency-domain MMSE equalization is proposed. The bit error rate (BER) performance of SC transmission is evaluated by computer simulation. It is found that joint use of STTD, receive antenna diversity and frequency-domain MMSE equalization can significantly improve the BER performance in a severe frequency-selective fading channel.