中国邮电高校学报(英文版)

Acta Metallurgica Sinica(English letters) ›› 2014, Vol. 21 ›› Issue (1): 10-15.doi: 10.1016/S1005-8885(14)60262-4

• Wireless • 上一篇    下一篇

Asynchronous diversity receiving scheme and analysis on cooperative relay networks

张颖慧1,2,张天魁1, Muhammad Saeed3, 曾志民1   

  1. 1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China 2. College of Electronic Information Engineering, Inner Mongolia University, Hohhot 010021, China 3. School of Computer and Emerging Sciences, National University of Computer and Emerging Sciences, Islamabad 44000, Pakistan
  • 收稿日期:2013-08-06 修回日期:2013-12-30 出版日期:2014-02-28 发布日期:2014-02-28
  • 通讯作者: 张颖慧 E-mail:zhangyinghui318@bupt.edu.cn
  • 基金资助:

    This work was supported by the National Science &Technology Major Projects (2012ZX03001031-004), the Fundamental Research Funds for the Central Universities (2012RC0105).

Asynchronous diversity receiving scheme and analysis on cooperative relay networks

  1. 1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China 2. College of Electronic Information Engineering, Inner Mongolia University, Hohhot 010021, China 3. School of Computer and Emerging Sciences, National University of Computer and Emerging Sciences, Islamabad 44000, Pakistan
  • Received:2013-08-06 Revised:2013-12-30 Online:2014-02-28 Published:2014-02-28
  • Contact: Ying-Hui ZHANG E-mail:zhangyinghui318@bupt.edu.cn
  • Supported by:

    This work was supported by the National Science &Technology Major Projects (2012ZX03001031-004), the Fundamental Research Funds for the Central Universities (2012RC0105).

摘要：

The transmission antennas of cooperative systems are spatially distributed on multiple nodes, so the received signal can be asynchronous due to propagation delays. A receiving scheme for cooperative relay networks is proposed, multiple asynchronous signals are reconstructed at the receiver by forward and backward interference cancellation, which can obtain gains of cooperative transmission diversity with obvious delay and with no requiring timing synchronization or orthogonal channelization between relays. Analysis and simulation show that the bit error rate (BER) of the proposed scheme is similar to Alamouti code, and the scheme has the diversity order of orthogonal transmission scheme accompanied by minimal BER losses. It is demonstrated that the performance can be further improved by adding an error correcting code (ECC).

关键词:

relay networks, asynchronous communications, cooperative diversity, interference cancellation

Abstract:

The transmission antennas of cooperative systems are spatially distributed on multiple nodes, so the received signal can be asynchronous due to propagation delays. A receiving scheme for cooperative relay networks is proposed, multiple asynchronous signals are reconstructed at the receiver by forward and backward interference cancellation, which can obtain gains of cooperative transmission diversity with obvious delay and with no requiring timing synchronization or orthogonal channelization between relays. Analysis and simulation show that the bit error rate (BER) of the proposed scheme is similar to Alamouti code, and the scheme has the diversity order of orthogonal transmission scheme accompanied by minimal BER losses. It is demonstrated that the performance can be further improved by adding an error correcting code (ECC).

Key words:

relay networks, asynchronous communications, cooperative diversity, interference cancellation

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