采用喷泉码的无线中继比特级信息累积协同通信  

Cooperative Relay Bit-level Information Accumulation Transmission Using Fountain Codes for Wireless Networks

作　　者：于国海[1] 王呈贵[2] 张铁刚[3] 

机构地区：[1]解放军理工大学通信工程学院研究生4队 [2]解放军理工大学通信工程学院无线通信系 [3]中国人民解放军65042部队

出　　处：《军事通信技术》2011年第3期7-11,共5页Journal of Military Communications Technology

摘　　要：协同中继通信是无线网络中的重要传输方式,为提高系统传输效率,文章将喷泉码引入到协同中继通信中来。在源节点到中继节点的传输阶段,将待发送数据进行LT码编码,减少了反馈信息量;在中继节点到目的节点的传输阶段提出了比特级的Raptor码信息累积方案,使中继节点不需要瞬时信道状态信息就可以使数据传输自适应信道质量。理论分析和仿真结果表明本方案减少了系统传输时间,降低了延时和能量消耗。Cooperative relay transmission is an important transmission scheme in wireless networks. To further improve transmission efficiency, cooperative relay transmission using fountain codes were analyzed in this paper. In transmission from the source node to the relay node, data were encoded using LT codes; a bit-level Raptor code information accumulated scheme was proposed for transmission from the relay nodes to the destination nodes. This scheme makes the transmission adapt to channel quality without instantaneous channel state information at the relays. Analysis and simulation results show that both the transmission time and energy consumption are reduced.

关 键 词：协同 中继 喷泉码 无线网络 

分 类 号：TN911.2[电子电信—通信与信息系统]