计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (13): 59-62.

• 研发、设计、测试 • 上一篇    下一篇

全分集高速率复正交空时分组码设计

刘小羊1,张会生2,包 涛2   

  1. 1.西安公路研究院,西安 710054
    2.西北工业大学 电子信息学院,西安 710129
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-05-01 发布日期:2011-05-01

Full diversity design of high-rate complex orthogonal space-time block codes

LIU Xiaoyang1,ZHANG Huisheng2,BAO Tao2   

  1. 1.Xi’an Highway Research Institute,Xi’an 710054,China
    2.School of Electronics Engineering,Northwestern Polytechnical University,Xi’an 710129,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-05-01 Published:2011-05-01

摘要: 基于典型的多输入-多输出无线通信系统,研究了一种适用于任意发射天线数的高速率复正交空时分组码设计方法。证明了采用该算法所设计的复正交空时分组码能达到满发送分集度和未对信号进行线性处理时的最大码率(m+1)/2m(m为自然数)。在此基础上,对不同发送天线数(n=2,3,4,5,6,7,8)的复正交空时分组码进行了蒙特卡洛仿真,从而验证了算法的有效性,并得出发射天线数与系统误比特率性能呈正比,且随着发射天线数目的增加,误比特率性能改善的程度越来越小。

关键词: 信道编码, 空时分组码, 正交, 分集, 计算机仿真

Abstract: Based on the typical multi-input multiple-output wireless communication system,a design method to generate high-rate complex orthogonal space-time block codes for any number of transmit antennas is considered.Meeting the premise of the full diversity gain,this algorithm can obtain a higher code rate by utilizing both space diversity and time diversity.On this basis,the Monte Carlo simulation is carried out for complex STBC of different transmitting antennas(n=2,3,4,5,6,7,8).This study finds that the number of transmission antennas is directly proportional to the system performance of bit error rate,and verifies that “floor effect” exists in the transmission antennas.In other words,the more the number of transmitting antennas is,the less the improvement of bit error rate is.

Key words: channel code, space-time block codes, orthogonal, diversity, computer simulation