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中国科学院大学学报 ›› 2011, Vol. 28 ›› Issue (3): 342-348.DOI: 10.7523/j.issn.2095-6134.2011.3.010

• 论文 • 上一篇    下一篇

基于矩阵扩展方法的多速率线性离散码设计

许莉, 朱近康, 邱玲   

  1. 中国科学技术大学电子工程与信息科学系,合肥 230027
  • 收稿日期:2010-03-09 修回日期:2010-07-05 发布日期:2011-05-15
  • 基金资助:

    Supported by International Science and Technology Cooperation Program (2008DFA12160) and National Science and Technology Significant Special project (2008ZX03003-004) 

Design of multi-rate linear dispersion codes based on extended matrix method

XU Li, ZHU Jin-Kang, QIU Ling   

  1. Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China
  • Received:2010-03-09 Revised:2010-07-05 Published:2011-05-15
  • Supported by:

    Supported by International Science and Technology Cooperation Program (2008DFA12160) and National Science and Technology Significant Special project (2008ZX03003-004) 

摘要:

在采用空时码的无线通信系统中,收发2端较差的路径会降低系统的性能.提出了多速率线性离散码(LDC),并对其进行了分析,给出了一种基于矩阵扩展方法的设计算法.多速率LDC是传统LDC和LDC-TAS的BER性能的折中.进而提出了一种性能优于传统LDC-A-TAS算法的多速率LDC自适应发送天线选择(A-TAS)算法.

关键词: 自适应发送天线选择, 线性离散码, 分集阶数, 多速率线性离散码

Abstract:

The performance may be reduced by the path between transmission and reception in a bad state in wireless communication systems using space-time codes(STCs).An STC called multi-rate linear dispersion codes(LDC) is proposed and analyzed, and its BER performance is a good trade-off between classical LDC and LDC-TAS. A design of multi-rate LDC based on extended matrix method is given. Further, an algorithm of adaptive transmit antenna selection(A-TAS) with multi-rate LDC is proposed, and it has better performance than classical LDC-A-TAS.

Key words: adaptive transmit antenna selection, linear dispersion codes, diversity gain, multi-rate LDC

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