摘要
为了避免认知用户对主要用户的干扰,实现了频谱移动性的要求,提出了一种AdHoc认知无线电网络下的动态频谱接入协议。先使用分布式频谱侦测技术,建立基于AdHoc认知无线电的网络模型。认知用户利用马尔科夫模型预测可用频段,从而在每个时隙选择预测的可用频段进行侦测,降低设备技术要求,并节约能量。最后,给出了相应的认知无线电频谱接入方案和频谱分配算法,为每一条空闲频段选择合适的通信组,实现系统频谱利用的最大化。
To avoid interfering with the main users of cognitive users and achieve mobility requirements of the spectrum,a spectrum sharing and access protocol in Ad Hoc cognitive radio network is proposed.Firstly,the frame of network based on the Ad Hoc cognitive radio network is formed.Choosing spectrum for sensing based Markov model is set forth.Cognitive users sense the chosen spectrum but not the whole spectrum to low down the needs of equipment capability and save energy.At the end,the algorithm of cognitive radio spectrum access and spectrum allocation is given in order to maximizing the benefits.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第3期508-510,567,共4页
Computer Engineering and Design
