WLAN/WPAN环境中模拟退火动态频率选择算法的研究  

The study on using simulated annealing DFS algorithm in WLAN/WPAN

作　　者：许国军[1] 沈连丰[1] 宋铁成[1] 徐平平[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《通信学报》2004年第5期59-66,共8页Journal on Communications

基　　金：国家自然科学基金资助项目(60072016);教育部科学技术研究重点基金资助项目(02171)

摘　　要：动态频率选择(DFS)是解决频道实时优化的有力手段,本文针对无线局域网/无线个域网(WLAN/WPAN)等小区域无线多媒体通信系统,首次把模拟退火算法应用到DFS中,针对WLAN/WPAN的情况,给出其处理过程的完整描述,并以HiperLAN/2系统为例进行了仿真。仿真结果表明,与目前已有的算法相比较,新算法实现了整个系统的组合优化,克服了现有算法可能存在的跳转较频繁、性能不够稳定等缺点,能在复杂传播环境下提高WLAN/WPAN的服务质量(QoS)。The dynamic frequency selection (DFS) is an impelling means to solve the question of real-time optimization in channel assignment. Aiming at WLAN/WPAN and other small area wireless multimedia communications systems, the simulated annealing algorithm is firstly applied to the DFS algorithm in this paper. The complete process in the system of WLAN/WPAN is described. As a practical example, the simulation of HiperLAN/2 system is given. Comparing to other algorithms, the result of simulation indicates that the new algorithm realizes the combination optimization of whole system, overcomes some weakness of the current algorithm such as continual transition, unsteady and so on. The algorithm can satisfy request of WLAN/WPAN in complex communications environment and ensure quality of service (QoS) of system.

关 键 词：无线局域网 无线个域网 动态频率选择 模拟退火算法 HIPERLAN/2 服务质量 

分 类 号：TN913.24[电子电信—通信与信息系统]