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STF coding for MIMO-OFDM systems with four or three transmit antennas. (English) Zbl 1107.94014

Summary: A space-time-frequency (STF) coding scheme based on quasi-orthogonal space-time block coding (QOSTBC) for MIMO-OFDM systems with four or three transmit antennas is presented. A low-complexity linear decoding algorithm is develops to mitigate the diversity loss caused by inter-symbol couplings in decoding of the block code in a non-quasi-static OFDM channel. Simulation shows that the proposed coding scheme combined with the linear decoder exhibits a significant advantage in BER performance and decoding simplicity over the counterpart space-frequency (SF) scheme in a slow fading channel.

MSC:

94B12 Combined modulation schemes (including trellis codes) in coding theory
94B35 Decoding
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