J4 ›› 2011, Vol. 38 ›› Issue (2): 36-41+53.doi: 10.3969/j.issn.1001-2400.2011.02.007

• 研究论文 • 上一篇    下一篇

基于机会网络编码的多用户协作通信方案设计

施玉晨1;白宝明1;王静2
  

  1. (1. 西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安  710071;
    2. 长安大学 信息工程学院,陕西 西安  710064)
  • 收稿日期:2010-09-08 出版日期:2011-04-20 发布日期:2011-05-26
  • 通讯作者: 施玉晨
  • 作者简介:施玉晨(1983-),女,西安电子科技大学博士研究生,E-mail: ycshi@mail.xidian.edu.cn.
  • 基金资助:

    新一代宽带无线移动通信网重大专项课题资助项目(2009ZX03003-011,2009ZX03003-003-03);长江学者和创新团队发展计划资助项目(IRT0852);国家自然科学基金资助项目(60972046,61001130,61040005)

Multi-user cooperative communications scheme design based on opportunistic network coding

SHI Yuchen1;BAI Baoming1;WANG Jing2
  

  1. (1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China;
    2. School of Information Engineering, Chang'an Univ., Xi'an  710064, China)
  • Received:2010-09-08 Online:2011-04-20 Published:2011-05-26
  • Contact: SHI Yuchen

摘要:

为了合理选择中继节点,同时提高网络系统吞吐量,提出了一种结合机会通信和网络编码的多用户协作通信方案.各用户通过中断概率判断是否作为伙伴的中继进行信息转发,中继节点借助网络编码技术,对自己的发送信息和伙伴的信息进行处理,然后发送至接收端.接收端采用相干检测,同时收到多个发送端的信息.在准静态瑞利衰落信道下,与传统的协作方案相比,该机会网络编码方案可极大地提高单用户和网络的吞吐量,降低系统中断概率,且需要较少的时间资源.

关键词: 协作通信, 网络编码, 中断概率, 吞吐量

Abstract:

In order to select the relay node and improve the system throughput, a new multi-user cooperative communication protocol is proposed based on the opportunistic communication and network coding. On the basis of outage probability, each user decides whether to help forward its partner's information as a relay or not. The relay node processes its own information and the partner's information by the use of network coding, and transmits it to the receiver. The receiver can obtain several transmitters' information using coherent detection. Compared with traditional cooperative protocols, the proposed protocol can improve the average per user throughput and the network throughput in the quasi-static Rayleigh fading channel. The probability of system outage is reduced with fewer time resources.

Key words: cooperative communication, network coding, outage probability, throughput

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