J4 ›› 2012, Vol. 39 ›› Issue (3): 90-94.doi: 10.3969/j.issn.1001-2400.2012.03.014

• Original Articles • Previous Articles     Next Articles

Cooperative GBN-ARQ with a single buffer

DONG Luobing1,2;SHEN Peiyi1;YI Kechu2;YU Quan2   

  1. (1. School of Software, Xidian Univ., Xi'an  710071, China;
    2. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2011-05-06 Online:2012-06-20 Published:2012-07-03
  • Contact: DONG Luobing E-mail:dongluobing@gmail.com

Abstract:

This paper presents a Cooperative Go-Back-N Automatic Repeat Request Algorithm with a Single Buffer (SBC-GBN-ARQ), which can be applied to the multi-access based single source single relay wireless networks. Adding one single buffer at the destination by virtue of the characteristic of a multiple access system(e.g. TDMA or CDMA), the scheme enables both the source and the relay to participate in the first transmission and the retransmission process of packets, which makes the system yield a much better throughput performance than GBN-ARQ algorithm. It can overcome the drawback of the conventional algorithm that its data throughput will sharply drop down when the channel condition is getting poorer. Numerical analysis and computer simulation show that the proposed algorithm significantly outperforms the conventional one in throughput efficiency, and that the maximum gain is over 10dB under some conditions.

Key words: cooperation, automatic repeat request, go-back-N, wireless communication

CLC Number: 

  • TN919.3