慢衰落信道下MMSE-VBLAST检测算法  

Analysis of MMSE-VBLAST Detection Algorithm Based on Rayleigh Fading Channels

作　　者：朱彦军[1] 宋仁旺[1] 王钢飞[1] 

机构地区：[1]太原科技大学电子信息工程学院,山西太原030024

出　　处：《机械工程与自动化》2011年第3期24-25,28,共3页Mechanical Engineering & Automation

基　　金：山西高校科技研究开发项目资助(20091023)

摘　　要：多入多出(M IMO)系统在无线通信中能提高系统的数据传输效率。在M IMO系统中VBLAST是一种低复杂度、易于实现的结构。研究了M IMO系统中MMSE-VBLAST算法的性能,仿真比较和分析了慢衰落信道下3种MMSE-VBLAST算法的误码率性能,以及排序的抑制和删除干扰的MMSE-VBLAST算法与天线对数对系统的影响。仿真表明排序的抑制和删除干扰的MMSE-VBLAST算法是一种较优的检测算法,对提高下行链路中接收机的性能、系统容量和覆盖有很好的指导作用。It has been proved that multiple-input and multiple-output（MIMO） system offers great increase in data transmission rate in wireless communications.Vertical-bell laboratories layered space-time（VBLAST）,a less complicated detection algorithm is a viable solution.This paper studies the minimum mean squared error vertical-bell laboratories layered space-time（MMSE-VBLAST） performance in the MIMO system environment.The simulation is conducted to compare and analyze bit-error rate of the MMSE-VBLAST algorithm based on rayleigh fading channels,trying to identify the impacts of sequence inhibition and inteference elimination using MMSE-VBLAST algorithm and the pairs of antennas on the system.The simulation suggests that MMSE-VBLAST algorithm is an excellent detection algorithm.The results of simulation will help in improving the downlink receiver＇s performance,system capacity and layover.

关 键 词：多入多出(MIMO) 垂直分层空时编码(VBLAST) 最小均方误差(MMSE) 

分 类 号：TN911.22[电子电信—通信与信息系统]