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摘要
A new method is proposed to construct space-frequency (SF) codes for multiple-input-multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems undergoing frequency-selective fading. The new design exploits the geometric relationship of coherent and noncoherent SF codes, and each codeword is constructed as a product of a noncoherent SF codeword and an information-bearing square matrix. A two-stage decoding strategy, where noncoherent detection and coherent detection are implemented sequentially, is proposed to reduce decoding complexity.
- 出版日期2009-3
- 单位南阳理工学院
