一种适用于WPAN应用环境的高速自适应跳频系统及其性能分析  

A High-speed AFH Scheme and Its Performance Analysis in WPAN Systems

作　　者：沈连丰[1] 邹乐[1] 宋扬[1] 宋铁成[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：《电子学报》2002年第10期1540-1543,共4页Acta Electronica Sinica

基　　金：国家自然科学基金 (No 60 0 72 0 1 6) ;教育部科学技术研究重点项目 (No 991 76)

摘　　要：本文针对无线个域网 (WPAN ,WirelessPersonalAreaNetwork)工作环境复杂的干扰情况 ,提出将自适应跳频技术应用其中的方案 ,并以几个WPAN系统为例进行了定量计算 .得出了采用AFH技术后系统的误码特性 ,最后以80 2 15 1(Bluetooth)及 80 2 15 3系统为例 ,对其主要的数据速率和 16 0 0跳 /秒情况进行了数值计算 .结果表明 ,在小区域内存在多种系统工作在同一频段的情况下 ,采用AFH技术的WPAN系统抗干扰性能差不多提高了 1～ 2个数量级 .本文结论也可推广到使用高速跳频技术的其它WPAN系统 .This paper presents a scheme applying the technique of Adaptive Frequency Hopping (AFH) to WPAN system in which works on the complex interference environment and the performances of the bit error rate (BER) for some WPAN systems that use AFH technique are analyzed.First,the background of WPAN systems and the typical interferences in WPAN environment are discussed.Then,the theoretic analysis of especially the BER characteristics of this scheme is given.Finally,the simulation of the cases of data rates commonly used in 1600 hops/s is performed taking 802.15.1 (Bluetooth) and 802.15.3 system as examples.The results show that the AFH technique improves the BER performance of the WPAN systems nearly 1～2 order of magnitudes when these systems work in the same frequency band within a small area.The result is also applicable for other WPAN systems using high-speed frequency hopping technique.

关 键 词：WPAN 无线个域网 自适应跳频 AFH 抗干扰性能 蓝牙系统 IEEE802.11 

分 类 号：TN925.93[电子电信—通信与信息系统]