一种高效的V-BLAST最大似然检测算法

Efficient ML Detection Algorithm for V-BLAST System

垂直分层空时码(V-BLAST)是贝尔实验室提出的一种多发射多接收天线(MIMO)结构无线通信系统,该系统具备较高频谱利用率和易于实现的特点.在V-BLAST检测算法中,最大似然算法有最好的检测性能,但它的算法复杂度最高.笔者提出了一种高效的V-BLAST最大似然检测算法,此算法在保证较高的检测性能的前提下大大减小了算法复杂度.

Vertical Bell-laboratories Space-Time （V-BLAST） is a multiple transmit and multiple receiving antennas （MIMO） wireless systems. V-BLAST attains very high spectral efficiency while maintains low implementation complexity. Among the detection algorithms of V-BLAST maximum likelihood （ML） detection scheme performs the best; however, its complexity is excessively high. An efficient ML detection algorithm is proposed in this paper. According to simulation results,the proposed scheme has better bit error rate （BER） performance with significant reduction in the computational complexity.