计算机工程Issue(11)：83-86,4.DOI:10.3969/j.issn.1000-3428.2014.11.016
提升MIMO干扰信道容量的干扰对齐方案
Interference Alignment Scheme for Capacity Improvement of MIMO Interference Channel
宋林中 1赵宇 1马永涛1
作者信息
- 1. 天津大学电子信息工程学院，天津300072
- 折叠
摘要
Abstract
A new interference alignment method is proposed to improve the channel capacity of the multi-user Multiple Input Multiple-Output( MIMO) channel. Based upon the assumption that the antenna configuration is unchangeable,the antennas at transmit node are divided into two parts and with differentiated parameters, it conduces to eliminate the correlation between the two subparts and contributes to form two independent sub-channels. The signals received are consolidated to extend the dimensions of the signal space. According to the equivalent channel transmission matrixes,the pre-coding matrices and combining matrices are separately designed by optimizing the angle between the pre-coding vectors and using orthogonal projection method. The new scheme can reduce the computation pervasively existed in the previous iterative algorithms. Simulation indicates that the proposed method can effectively promote the anti-interference ability of the MIMO channel with the unchanged antenna configuration.关键词
多输入多输出/干扰信道/干扰对齐/信道容量/正交投影/自由度Key words
Multiple-Input Multiple-Output ( MIMO )/interference channel/interference alignment/channel capacity/orthogonal projection/Degree of Freedom(DoF)分类
信息技术与安全科学引用本文复制引用
宋林中,赵宇,马永涛..提升MIMO干扰信道容量的干扰对齐方案[J].计算机工程,2014,(11):83-86,4.
