J4 ›› 2012, Vol. 39 ›› Issue (4): 172-177.doi: 10.3969/j.issn.1001-2400.2012.04.031

• 研究论文 • 上一篇    下一篇

一种新的准正交空时分组码设计方案

马天鸣;李凤荣;施玉松;王营冠   

  1. (中国科学院上海微系统与信息技术研究所 无线传感网与通信重点实验室,上海  200050)
  • 收稿日期:2011-10-15 出版日期:2012-08-20 发布日期:2012-10-08
  • 通讯作者: 马天鸣
  • 作者简介:马天鸣(1983-),男,中国科学院上海微系统与信息技术研究所博士研究生,E-mail: xdsjtxw@163.com.
  • 基金资助:

    国家重大专项03专项资助项目(2009ZX03006-003-01)

Novel design for the quasi orthogonal space-time block code

MA Tianming;LI Fengrong;SHI Yusong;WANG Yingguan   

  1. (Key Lab. of Wireless Sensor Network & Commun., Shanghai Inst. of Microsystem and Info. Tech.,  Chinese Academy of Sci., Shanghai  200050, China)
  • Received:2011-10-15 Online:2012-08-20 Published:2012-10-08
  • Contact: MA Tianming

摘要:

提出了一种准正交空时分组码的改进方案,并用MATLAB进行了仿真.该方案使用改进后的Alamouti码作为基本单元构造出了一个4发射天线的准正交分组编码矩阵,运用矩阵对角化的方法来消除非正交项,降低了译码复杂度.仿真结果表明,与Jafarkhani准正交空时分组码相比,该方案不仅能够在接收端实行线性解码,而且还可以进一步提高系统的信道容量和误码率.

关键词: 多输入多输出, 空时编码, 准正交空时分组码, Alamouti码

Abstract:

A quasi orthogonal space-time block code scheme is proposed and simulated by MATLAB based on the analysis and study of the current Quasi Orthogonal Space-Time Block Codes. The scheme uses the improved Alamouti Code as its basic unit to design a Quasi Orthogonal Space-Time Block Code matrix with four transmit antennas, using the method of matrix diagonalization to remove the redundant sparse matrix and reduce the decoding complexity. Final simulation results show that, compared with the Jafarkhani Quasi Orthogonal Space-Time Block Code, this scheme can not only be linearly decoded at the receiver, but also further improve the channel capacity and the Bit Error Rate.

Key words: multiple input multiple output, space-time code, quasi orthogonal space-time block code, Alamouti code

中图分类号: 

  • TN911.22