喷泉码在认知无线电网络中的应用  

Application of Fountain Code in Cognitive Radio Network

作　　者：姚渭箐[1] 易本顺[1] 

机构地区：[1]武汉大学电子信息学院,武汉430072

出　　处：《电讯技术》2015年第8期935-941,共7页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61371125)~~

摘　　要：认知无线电网络被认为是实现动态频谱共享、缓解频谱资源紧缺的重要途径。喷泉码能有效抵抗认知无线电网络中来自主用户的突发干扰,且无需反馈重传,从而为认知无线电网络提供了一种有效的信道编码方案。首先简介了数字喷泉码以及认知无线电网络基础知识,然后综述了数字喷泉码在认知无线电网络的链路建立、认知通信以及在资源分配中的应用现状,最后指出了在这一研究领域中需要解决的问题,并展望了发展前景。Cognitive radio technology has been recognized as an optimal solution to dynamic spectrum sha- ring and the low spectrum utilization. Fountain codes can effectively resist sudden interference from prima- ry users （PUs） in cognitive radio network, without feedback retransmission, which provides an effective channel coding scheme for cognitive radio network. First, the principles of digital fountain codes and cogni- tive radio network are introduced. Then the applications of the digital fountain codes in link setup, cogni- tive communication and resource allocation for the cognitive radio network are surveyed. Finally, some un- solved problems in this research field are pointed out, and the future development is discussed.

关 键 词：认知无线电网络 喷泉码 链路建立 认知通信 资源分配 

分 类 号：TN915[电子电信—通信与信息系统] TN911.2[电子电信—信息与通信工程]