认知无线电网络中跨层设计的研究
首发时间:2009-08-19
摘要:由于无线链路的时变特性以及可用频谱的频繁改变,认知无线电网络的性能优化是一个很复杂的问题,跨层设计的提出就是为了解决这个难题。本文主要讨论认知无线电网络的跨层设计问题,首先从频谱检测、频谱管理、频谱分配、频谱切换等四个方面对现有跨层设计方案的原理及性能进行了分析和总结;然后阐述了跨层设计中所采用的几种典型优化方法,包括模糊逻辑、神经网络、多目标优化;最后探讨了认知无线电网络跨层设计面临的挑战和发展前景。
关键词: 认知无线电网络 跨层设计 频谱检测 频谱管理 频谱分配 频谱切换
For information in English, please click here
A Survey of Cross-layer Design for Cognitive Radio Networks
Abstract:The performance optimization of Cognitive Radio Networks is a greatly complex problem,because of the time variation characters of radio links and the useable spectrum resources frequently changing. Therefore, the cross-layer design method is brought forward to deal with the difficult problem. In this work, we focus on the cross-layer design issues of Cognitive Radio Networks. Firstly, we analyze and conclude the principle and performance of cross-layer design schemes according to four aspects: spectrum sensing, spectrum management, spectrum allocation and spectrum handover. Moreover, we analyze some typical optimization methods in cross-layer design, which are respectively based on the fuzzy logic theory, Neural Networks and multi-objective optimization theory. At last the challenges and development foreground of cross-layer design for Cognitive Radio Networks is discussed.
Keywords: Cognitive Radio Networks Cross-layer design spectrum sensing spectrum management spectrum allocation spectrum handover
论文图表:
引用
No.3456748860412506****
同行评议
勘误表
认知无线电网络中跨层设计的研究
评论
全部评论0/1000