分布式MIMO系统中最优检测的简化算法
A near-optimal simplified detection algorithm for distributed MIMO systems
窦冬冬 1吕璐 2李兆训 2刘军博2
作者信息
- 1. 解放军信息工程大学信息工程学院,河南郑州450002;蚌埠汽车士官学校,安徽蚌埠233011
- 2. 解放军信息工程大学信息工程学院,河南郑州450002
- 折叠
摘要
在V-BLAST结构的分布式MIMO系统中,针对发射天线地域上的分布性所引起的发射符号异步到达接收天线的问题,提出了一种接近最优检测性能简化算法.该算法首先遍历部分码元符号,且每次遍历时都使用分布式排序干扰抵消算法检测剩余符号,然后对得到的符号候选集进行搜索,恢复发送信号.莱斯衰落信道下的计算机仿真表明,该算法对接收端天线数目没有要求,且在获取接近最优检测性能的同时,有效地降低了计算复杂度.
Abstract
Aiming at the problem of the asynchronous arrival at receiving antennas,a simplified algorithm of the optimal detection is presented for distributed MIMO system with V-BLAST architecture.The algorithm firstly traverses some symbols and every time using distributed antenna order interference cancellation (DA-OIC) algorithm detects the remaining symbols,then searching the generated symbols candidate and recovering the corresponding transmitted signals.Some computer simulation results under Ricean fading conditions show that this algorithm can be used in the system with arbitrary receive antennas and can achieve near the optimal detection performance with low complexity.
关键词
分布式天线/多输入多输出/贝尔实验室分层空时码/最大似然算法Key words
distributed antennas/multiple input multiple output/vertical bell labs layered space time/maximal likelihood algorithm引用本文复制引用
基金项目
"新一代宽带无线移动通信网"国家重大专项(2009ZX03003-008-02)
"十一五"国家863计划重点项目资助(2009AA011504)
出版年
2013
NETL
NSTL
维普
万方数据