基于Cayley变换的酉空时调制技术研究

Research on Unitary Space-time Modulation(USTM) Based on Cayley Transform

酉空时调制技术无需信道状态信息,尤其适用于快衰落信道。针对经典酉空时调制的译码计算量过大的问题,文章提出基于Cayley变换将Hermitian矩阵映射为酉矩阵,从而实现酉空时调制的算法。理论推导得出该方案的实现算法。

Unitary space-time modulation （USTM） is ideally suited for fast channel state information. In this paper, we propose a scheme based on Cayley fading channels because it needs no transformation which maps Hermitian matrices to unitary matrices to realize USTM.