MIMO干扰信道中新的空时编码传输方案

doi:10.13190/j.jbupt.2015.04.023

北京邮电大学学报 ›› 2015, Vol. 38 ›› Issue (4): 117-121.doi: 10.13190/j.jbupt.2015.04.023

MIMO干扰信道中新的空时编码传输方案

田心记^1,2, 赵鸿图², 文富鹏³, 赵文涛^1,2

1. 河南理工大学河南省高等学校矿山信息化重点学科开发实验室, 焦作 454000;
2. 河南理工大学计算机科学与技术学院, 焦作 454000;
3.北京计算机技术及应用研究所, 北京 100854

出版日期:2015-08-28 发布日期:2015-07-03
作者简介:田心记(1983-),女,讲师,博士,E-mail:tian215216@sohu.com.
基金资助:
国家自然科学基金项目(61300124);河南省高等学校矿山信息化开放实验室开放基金项目(KY2015-01);河南省高校基本科研业务费专项资金资助项目(NSFRF140126)

New Space-Time Coded Transmission Scheme for MIMO Interference Channel

TIAN Xin-ji^1,2, ZHAO Hong-tu², ZHAO Wen-tao^1,2

1. Opening Project of Key Laboratory of Mine Informatization, Henan Polytechnic University, Jiaozuo 454000, China;
2. School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454000, China

Online:2015-08-28 Published:2015-07-03

摘要/Abstract

摘要：

针对3用户的多输入多输出(MIMO)干扰信道,提出了一种新的空时编码传输方案,设计了一种速率为2的空时码字,通过对该码字进行干扰对齐预编码使得后2个接收端接收到的非期望接收码字对齐,然后进行非线性运算消除这2个接收端的非期望接收码字,再通过单向协作链路以及接收端的非线性运算消除另一个接收端的非期望接收码字.与相同场景中的已有方案相比,所提方案在保持相同分集增益的同时,提高了传输效率.仿真结果显示,传输速率相同时,所提方案有较高的可靠性.

关键词: 多输入多输出干扰信道, 空时编码, 预编码, 干扰对齐, 传输效率

Abstract:

New space-time coded transmission scheme was proposed for multiple input multiple output (MIMO) interference channel with three users. Rate-2 space-time codeword was designed for every user. The unwanted codeword for the last two receivers is aligned through interference alignment pre-coding, and then is eliminated through non-linear operations on the received signals. The unwanted codeword for the first receiver is canceled through unidirectional operational link and non-linear operations. Compared with the existing scheme for the same scene, the proposed scheme improves the transmission efficiency, while keeping the same diversity gain. Simulation shows that, with the same transmission rate, the proposed scheme outperforms the existing scheme.

Key words: multiple input multiple output interference channel, space-time code, pre-coding, interference alignment, transmission efficiency

中图分类号:

TN911.22

田心记, 赵鸿图, 文富鹏, 赵文涛. MIMO干扰信道中新的空时编码传输方案[J]. 北京邮电大学学报, 2015, 38(4): 117-121.

TIAN Xin-ji, ZHAO Hong-tu, ZHAO Wen-tao. New Space-Time Coded Transmission Scheme for MIMO Interference Channel[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2015, 38(4): 117-121.

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MIMO干扰信道中新的空时编码传输方案

New Space-Time Coded Transmission Scheme for MIMO Interference Channel

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