摘要
为了支持更多的认知业务,提高认知系统的总体性能,提出了基于业务和信道分级的分布式信道分配算法。根据数据速率的不同,将认知用户的业务需求和可用信道分别分为不同等级,优先分配对应等级的空闲信道给干扰邻居数最小的认知用户,以保证更多的认知业务有机会获得空闲信道。仿真结果表明,算法能满足更多认知业务的需求,符合理论分析的结果。
In order to support more cognitive services and improve the performance of cognitive systems,an improved distributed channel allocation algorithm based on classifying of cognitive services and channels is proposed.The algorithm classified the cognitive users＇ services requirements and available channels to different levels according to data rate.To satisfy more cognitive services,cognitive users who have the smallest number of interference neighbors have the priority to get the corresponding level spectrum resources.Simulation results show that the algorithm can meet more cognitive services＇ requirements and is consistent with theoretical analysis results.
出处
《计算机工程与设计》
CSCD
北大核心
2012年第9期3381-3385,共5页
Computer Engineering and Design
关键词
认知无线电
信道分配
分布式结构
认知业务
需求
cognitive radio
channel allocation
distributed structure
cognitive services
requirements
