准正交编码最大似然检测优化算法

准正交空时编码(QOSTC)可以提高多天线系统的信道容量,但其最大似然(ML)检测算法复杂。在分析了QOSTC的ML检测算法的基础上,提出了一种ML检测优化算法,与ML相比,该优化算法在大幅度降低检测所需的运算量的同时,保持了与ML相同的检测性能,从而解决了QOSTC相对于正交空时编码(OSTC)而言,采用ML检测时复杂度较高的缺点。数值分析与仿真结果验证了上述结论。

An Optimized Algorithm of Maximum Likelihood Detection for Quasi-orthogonal Space-time Code

The quasi-orthogonal space-time code (QOSTC) can improve the channel capacity of the multi-antenna system.However,the maximum likelihood (ML) detec tion method is very intricate.An optimized algorithm of the ML detection is pre sented based on the analysis of the ML in the QOSTC system.The algorithm not on ly can reduce operations greatly but also has the same performance as the ML det ection.Data analysis and simulation results verify the conclusions above.