一种串/并混合的多输入多输出信号检测算法

为了提高多输入多输出(MIMO)系统中并行干扰消除(PIC)算法的检测性能并降低其计算复杂度，本文通过融入串行干扰消除(SIC)思想提出了一种串/并混合(HIC)的信号检测算法。该算法首先通过优化PIC中不同子检测过程的共同成分来降低计算复杂度，然后将子检测的估计结果代入后续子检测中实现串/并混合来提升检测性能。仿真结果表明，所提算法在4-QAM调制的 MIMO系统中，误比特率为 时较传统PIC算法有大约1.2 dB的性能提升，而复数乘法次数大约为传统PIC算法的28%。

A Serial/Parallel Hybrid MIMO Signal Detection Algorithm

In order to improve the detection performance and reduce the computational complexity of the parallel interference cancellation (PIC) algorithm in the multiple-input multiple-output (MIMO) system, a serial/parallel hybrid detection algorithm (HIC) was proposed in this paper by incorporating the serial interference cancellation (SIC) idea. The proposed algorithm first reduces the computational complexity by optimizing the common components of the different sub-detection processes in PIC, and then substitutes the estimated results of the sub-detection into the subsequent sub-detection to achieve hybrid processing to improve detection performance. The simulations results show that in a 4-QAM modulated MIMO system, the proposed algorithm has a performance improvement of about 1.2 dB compared with that of the traditional PIC algorithm when the bit error rate is . And the number of complex multiplications of the proposed algorithm is only about 28% of the traditional PIC algorithm.