复数对偶格辅助预编码检测算法在多用户MIMO系统中应用  

Complex Lattice Reduction Aided Detection for Multiuser MIMO System in Dual Basis

作　　者：刘金铸[1] 缪香香 程洁洁 翁秀娟[1] 高明[1] 

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044

出　　处：《科学技术与工程》2015年第27期167-170,共4页Science Technology and Engineering

基　　金：国家自然科学基金项目(61372128)资助

摘　　要：在LTE系统采用MIMO技术,使得系统容量提高,效率变快。为了消除多用户MIMO系统中一个用户来自其他用户之间的干扰,利用一种块对角化(BD)的预处理技术,将多用户信道分解为单用户信道,再结合对偶格基约减的方法代替原始的实数LLL算法来对信道矩阵进行处理。仿真结果表明,改进的算法在复杂度较低的情况下,可以获得更高的性能增益。LTE uses the spatial multiplexing multiple input multiple output （MIMO） technology to improve sys- tem capacity and efficiency. For MIMO systems, in order to solve the MIMO multiuser interference between the us- ers of the system, pretreatment technology was used based on a Block Diagonalization （BD） , the muhiuser channel is broken down into many single-user channels. Based on the lattice theory concept, complex lattice reduction aided detection was proposed for multiuser MIMO system in dual basis. The Complex Lattice Reduction in Dual Basis in- stead of original real LLL algorithm to process channel matrix was used . The simulation results show that the im- proved algorithm can achieve higher performance gain.

关 键 词：LTE MIMO 块对角化 复数格基约减 ML 

分 类 号：TN911[电子电信—通信与信息系统]