中国邮电高校学报(英文) ›› 2011, Vol. 18 ›› Issue (5): 53-57.doi: 10.1016/S1005-8885(10)60103-3

• Wireless • 上一篇    下一篇

A novel QO-STBC scheme with linear decoding

肖丽萍,代晓雪   

  1. College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China
  • 收稿日期:2011-01-14 修回日期:2011-06-13 出版日期:2011-10-31 发布日期:2011-10-13
  • 通讯作者: 肖丽萍 E-mail: lpxiao@ysu.edu.cn

A novel QO-STBC scheme with linear decoding

  1. College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China
  • Received:2011-01-14 Revised:2011-06-13 Online:2011-10-31 Published:2011-10-13
  • Contact: XIAO Li-ping E-mail: lpxiao@ysu.edu.cn

摘要:

A new quasi-orthogonal space-time block code (QO-STBC) scheme, based on eigen value decomposition (EVD), is explored in this paper. The new scheme can significantly reduce the QO-STBC decoding complexity at receiver and achieves better bit-error rate (BER) performance as well. With EVD manipulations, the detection matrix and the channel matrix can be redefined to remove all interference terms which come from other antennas, and therefore the conventional maximum likelihood (ML) decoding method with less complexity can be applied. Moreover the new scheme improves the BER performance significantly. Theoretical analysis and simulation results are presented in this paper to show the validation of this new scheme.

关键词:

quasi-orthogonal space time code, maximum likelihood, linear decoding, eigen value decomposition

Abstract:

A new quasi-orthogonal space-time block code (QO-STBC) scheme, based on eigen value decomposition (EVD), is explored in this paper. The new scheme can significantly reduce the QO-STBC decoding complexity at receiver and achieves better bit-error rate (BER) performance as well. With EVD manipulations, the detection matrix and the channel matrix can be redefined to remove all interference terms which come from other antennas, and therefore the conventional maximum likelihood (ML) decoding method with less complexity can be applied. Moreover the new scheme improves the BER performance significantly. Theoretical analysis and simulation results are presented in this paper to show the validation of this new scheme.

Key words:

quasi-orthogonal space time code, maximum likelihood, linear decoding, eigen value decomposition