无线中继网络中的物理层网络编码  

Physical-layer Network Coding for Wireless Relay Networks

作　　者：王钢[1] 王海龙[1] 刘荣宽[1] 许尧 

机构地区：[1]哈尔滨工业大学通信技术研究所,黑龙江哈尔滨150001

出　　处：《无线电通信技术》2017年第6期1-7,共7页Radio Communications Technology

基　　金：国家自然科学基金项目(61671184;61401118;61371100);国家科技重大专项基金资助项目(2015ZX03001041-002)

摘　　要：针对无线中继网络中物理层网络编码技术的应用,分析验证了其所带来可观的吞吐量性能提升。总结了当前物理层网络编码技术的相关研究方向,归纳了通信理论研究、信息理论研究和网络理论研究三个方面。介绍了物理层网络编码的关键技术,对物理层网络编码技术在实际信道条件下的性能分析及改进、采用高阶调制时的检测模糊及改进、基于嵌套格码的计算-转发策略和结合缓冲中继协议设计进行了深入探讨。以期放宽物理层网络编码对信道模型的限制,拓展其适用条件,同时在保障通信过程可靠性的前提下充分发挥该技术对通信有效性的提升,从而推进物理层网络编码技术在实际无线中继通信系统中的应用。Physical-layer network coding（ PNC） ＇s application in wireless relay networks is investigated.The performance gain in network throughput brought by PNC is analyzed and validated.Various researchers＇ works have led to many new results in the domains of wireless communication,information theory,and wireless networking.Several related key issues are discussed in detail including the PNC＇s performance under practical channel conditions and possible solutions,the decoding ambiguity at the relay node when high-order modulation is applied,the compute-and-forward scheme based on nested lattice codes and possible solution combined with buffer-aided relaying.The possible solutions of the above issues will bring PNC into more realistic and practical scenarios,while high reliability and efficiency of the communication is maintained.

关 键 词：物理层网络编码 无线中继网络 计算转发 缓冲中继 

分 类 号：TN919.23[电子电信—通信与信息系统]