宽带非相干空时频分组编码

基于正交频分多路复用,提出了多个输入和输出天线频率选择性瑞利衰落信道中的非相干空时频分组编码方法。成对错误概率分析表明,将子载波分组与正交空时频编码结合,提出的码能获得最大空间分集和频率分集,且只有较低的编解码复杂性。采用提出的编码方法,系统发射端的编码和接收端的解码都不需要知道信道状态信息,减小了信道估计所带来的系统复杂性。给出了码的设计准则和仿真结果,验证了频率选择性衰落信道中提出码的良好性能。

Wideband Non-Coherent Space-Time-Frequency Block Coding

Based on orthogonal frequency division multiplexing, this paper proposes non-coherent space-time-frequency grouping coding schemes in frequency-selective Multiple-Input and Multiple-Output(MIMO) antenna Rayleigh fading channels. Pair-wise error probability analysis show that combing subcarrier grouping with orthogonal space-time-frequency block coding, the proposed method can attain maximum spatial diversity and frequency diversity with low coding and decoding flexibility and neither the receiver nor the transmitter need knows the channel state information. The paper gives the code design criteria and simulation results, which confirm good performance of the proposed scheme in frequency-selective fading channels.