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为了适应宏分集传输中高天线数的要求,提出一种高维度满速率的空时编码方案.这种高维度编码可以达到满速率传输,且其最大似然译码复杂度可控,只需对(发射天线数/2)个实数符号联合最大似然译码.对该编码的等效信道相关矩阵进行分析后得出结论:等效信道右奇异矩阵为常数矩阵.提出一种具有单符号线性译码复杂度的无反馈要求的预处理传输机制,使译码复杂度大大降低.仿真结果表明,相比于最小译码复杂度编码以及其他宏分集传输方案,如循环延迟分集,高维度满速率编码方案的性能有一定提升.
In order to meet the requirement of high antenna diversity in macro-diversity transmission, a space-time coding scheme with high dimension full rate is proposed, which can achieve full rate transmission with maximum likelihood decoding complexity controllable (Number of transmitting antennas / 2) real symbols combined with maximum likelihood decoding.After analyzing the equivalent channel correlation matrix of this code, it is concluded that the equivalent singular matrix of the right channel is a constant matrix, Compared with the minimum decoding complexity coding and other macrodiversity transmission schemes, such as cyclic delay diversity, high dimensional fullness, the decoding complexity is greatly reduced by the preprocessing transmission mechanism without decoding requirements of decoding complexity. The performance of rate coding schemes has been improved.