Computer Engineering and Applications ›› 2015, Vol. 51 ›› Issue (18): 109-113.

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Collaborative hybrid-ARQ protocol with distributed code

WU Xi1,2, LONG Hua1, TANG Jiaqi3, PENG Yongjie2   

  1. 1.Department of Communication Engineering, Kunming University of Science and Technology, Kunming 650051, China
    2.Department of Electronic and Information Engineering, Yibin Vocational and Technical College, Yibin, Sichuan 644000, China
    3.Yunnan Mobile Support Center of Mobile Communications Consulting and Design Institute, Guangdong Planning and Designing Institute of Telecommunications, Kunming 650299, China
  • Online:2015-09-15 Published:2015-10-13


吴  熹1,2,龙  华1,唐嘉麒3,彭永杰2   

  1. 1.昆明理工大学 通信工程系,昆明 650051
    2.宜宾职业技术学院 电子信息工程系,四川 宜宾 644000
    3.广东省电信规划设计院有限公司 移动通信咨询设计院云南移动支撑中心,昆明 650299

Abstract: In order to improve the reliability of the cooperative communication system, a new HARQ protocol is proposed by combining the distributed code with the averaged diversity combining technology. The collaborative hybrid repeat request system is constructed by distributed Turbo code. In the destination terminal, the retransmission of relay is processed by incremental redundancy technology, and the Chase combining technology is used to process the source information. Joint soft decision decoding is adopted at the destination terminal. The outage probability and average throughput are deduced. Compared with non-collaborative HARQ protocols, the collaborative HARQ protocol with distributed code can achieve better performance on flat Rayleigh fading channel.

Key words: Hybrid Automatic Repeat reQuest(HARQ) protocol, cooperative communication, Turbo code, outage probability, average throughput

摘要: 为提高协作通信系统的可靠性,将分布式编码和码合并技术相结合,提出了一种新的混合自动重传协议,构造了基于分布式Turbo码的协作重传系统模型。目的终端分别采用递增冗余和Chase合并技术处理中继节点和信源的重发信息,并进行联合软判决译码。分析了系统的中断概率和平均吞吐量。仿真结果表明,在平坦瑞利衰落信道下,该分布式编码协作HARQ协议较非协作HARQ协议可获得较大的性能改善。

关键词: 混合自动请求重传, 协作通信, Turbo码, 中断概率, 平均吞吐量