一种基于LTE的改进型信号检测算法

为了提升信号检测算法的性能,提出了一种改进型V-BLAST算法,在最先检测层保留了K个与判决统计量欧氏距离最近的星座点,其他各层依旧采用V-BLAST算法,从而降低了误码传播的可能性。通过仿真,设定了K的取值,并得到结论:K取值适当时,该改进型算法比传统的V-BLAST在性能上有了明显提升。

An improved signal detection algorithm based on LTE

LTE system uses OFDM、MIMO and other key technologies.During signal detection,the conventional V-BLAST algorithm exists the spread of error,resulting in a decline in performance.In order to enhance the performance of signal detection algorithms,this paper presents an improved V-BLAST algorithm.When it is firstly detected,this layer retains the K constellation points which are nearest to statistics judgment,and the other layers are still using V-BLAST algorithm.This algorithm reduces the possibility of transmission error.Through the simulation,the K value is set,and the conclusion can be gotten:if the K is set the appropriate value,the improved algorithm can be improved more significantly than the traditional V-BLAST in performance.