电讯技术
電訊技術
전신기술
TELECOMMUNICATIONS ENGINEERING
2015年
8期
935-941
,共7页
认知无线电网络%喷泉码%链路建立%认知通信%资源分配
認知無線電網絡%噴泉碼%鏈路建立%認知通信%資源分配
인지무선전망락%분천마%련로건립%인지통신%자원분배
cognitive radio network%fountain codes%link setup%cognitive communication%resource allocation
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。
認知無線電網絡被認為是實現動態頻譜共享、緩解頻譜資源緊缺的重要途徑。噴泉碼能有效牴抗認知無線電網絡中來自主用戶的突髮榦擾，且無需反饋重傳，從而為認知無線電網絡提供瞭一種有效的信道編碼方案。首先簡介瞭數字噴泉碼以及認知無線電網絡基礎知識，然後綜述瞭數字噴泉碼在認知無線電網絡的鏈路建立、認知通信以及在資源分配中的應用現狀，最後指齣瞭在這一研究領域中需要解決的問題，併展望瞭髮展前景。
인지무선전망락피인위시실현동태빈보공향、완해빈보자원긴결적중요도경。분천마능유효저항인지무선전망락중래자주용호적돌발간우，차무수반궤중전，종이위인지무선전망락제공료일충유효적신도편마방안。수선간개료수자분천마이급인지무선전망락기출지식，연후종술료수자분천마재인지무선전망락적련로건립、인지통신이급재자원분배중적응용현상，최후지출료재저일연구영역중수요해결적문제，병전망료발전전경。
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.
