基于认知无线电的动态信道分配算法  

DCA Algorithm Based on Cognitive Radio

作　　者：范敏[1] 宋晓勤[1] 

机构地区：[1]南京航空航天大学,江苏南京210007

出　　处：《无线电通信技术》2012年第2期34-37,共4页Radio Communications Technology

基　　金：中央高校基本科研业务费(NS2012045)资助

摘　　要：动态信道分配技术是TD-SCDMA系统的关键技术之一,通过实施动态信道分配方案可以提高频谱利用率、系统容量和提升通信质量。结合现有的可移动边界分配策略,提出了一种基于认知无线电的动态信道分配算法。系统实时感知周围频谱环境,分析并利用空闲频道资源,实现信道的动态分配;最后进行了系统仿真,仿真结果表明改进后系统性能得到一定的提升。Dynamic Channel Allocation （DCA） is a key technology for TD-SCDMA system. It will improve spectrum efficiency and system capacity, and enhance communication quality by implementing dynamic channel allocation scheme. In this paper, in combination of existing movable boundary allocation strategy, a novel dynamic channel allocation algorithm based on cognitive radio technology is proposed. The system can perceive spectrum environment in real-time, analyze and use idle channels resources to achieve a dynamic channel allocation. Finally, system simulations are carried out. Simulation results show that the system performance has been improved by implementing the new strategy.

关 键 词：TD—SCDMA 信道分配 认知无线电 频谱转移 

分 类 号：TN929.5[电子电信—通信与信息系统]