计算机工程

• 移动互联与通信技术 • 上一篇    下一篇

三天线X信道中改进的空时处理方案

田心记  a,b,杨冬 a,b,李亚 a,b   

  1. (河南理工大学 a.河南省高等学校矿山信息化重点学科开放实验室; b.计算机科学与技术学院,河南 焦作 454000)
  • 收稿日期:2015-06-09 出版日期:2016-08-15 发布日期:2016-08-15
  • 作者简介:田心记(1983-),女,讲师、博士,主研方向为MIMO技术;杨冬,硕士研究生;李亚,讲师、硕士。
  • 基金项目:
    国家自然科学基金资助项目“面向组合服务的智能化接入控制关键技术研究”(61300124);河南省高等学校矿山信息化开放实验室开放基金资助项目“矿井无线通信中的干扰消除方法研究”(KY201501);河南省高校基本科研业务费专项基金资助项目“基于完美空时分组码的干扰消除方法研究”(NSFRF140126)。

Improved Spacetime Processing Scheme for X Channel with Three Antennas

TIAN Xinji  a,b,YANG Dong  a,b,LI Ya  a,b   

  1. (a.Henan Opening Laboratory of Key Discipline of Mine Informatization; b.School of Computer Science and Technology,Henan Polytechnic University,Jiaozuo,Henan 454000,China)
  • Received:2015-06-09 Online:2016-08-15 Published:2016-08-15

摘要: 为提高通信系统的可靠性,针对每个用户配置3根天线的多输入多输出X信道,提出一种改进的空时处理方案。为每个用户设计3×6的空时码字,通过干扰对齐预编码,对接收信号进行线性处理后消除非期望接收的码字,利用另一层预编码的设计实现期望接收码字的正交传输,从而消除码字间的干扰。实验结果表明,该方案可有效提高信道传输效率。

关键词: 多输入多输出, X信道, 预编码, 干扰对齐, 传输效率

Abstract: In order to improve the reliability of communication systems,an improved spacetime processing scheme is proposed for Multiinput Multi-output(MIMO) X channel with three antennas for each user.In this scheme,codeword with the dimension of 3×6 is designed for each user.The unwanted codewords are removed through interference alignment pre-coding and linear processing on the received signals.The wanted codewords are orthogonal in their transmission by the other level pre-coding,so the interference between codewords is cancelled.Experimental result shows that the proposed scheme can improve the transmission efficiency of channel.

Key words: Multi-input Multi-output(MIMO), X channel, pre-coding, interference alignment, transmission efficiency

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