基于格基规约的线性检测改进算法

Improved linear detection algorithm based on lattice specification

针对多输入多输出检测系统中线性检测算法检测性能差、误码率高的问题,提出一种改进格基规约技术的线性检测算法,结合传统ZF、MMSE算法与格基规约中的LLL算法,约减多个初始基,构建了一组正交性更好的等效基,通过优化信道矩阵,提升MIMO系统的信号检测误码率性能与检测效果。结果表明,格基规约技术可使线性检测算法在高信噪比条件下误码率实现近2倍的改善,有利于接收端准确恢复信号。

This paper proposes an improved linear detection algorithm based on lattice reduction technology as an alternative to linear detection algorithms in MIMO detection systems which suffer from poor detection performance and higher bit error rate.The approach involves combining the traditional ZF,MMSE algorithm and the LLL algorithm in the lattice basis convention,reducing multiple initial bases to obtain a group of equivalent bases with better orthogonality,optimizing the channel matrix,improving the signal detection error rate performance of the MIMO system,and achieving the best detection.The results show that lattice reduction technology can make the linear detection algorithm achieve nearly 2 times improvement in SER under the condition of high SNR,which is conducive to the accurate signal recovery at the receiving end.