无线体域网中能量检测算法设计与验证  

Design and verification of energy detection in wireless body area networks

作　　者：申志坤[1,2] 申达[1,2] 许苗[1,2] 

机构地区：[1]上海交通大学电子工程系,上海200240 [2]上海市数字媒体处理与传输重点实验室,上海200240

出　　处：《信息技术》2009年第11期34-37,共4页Information Technology

基　　金：国家863计划项目(2007AA01Z237)

摘　　要：先根据无线体域网中人体信道幅度响应公式,分析了人体信道幅度响应与人体信道的长度和信号频率间的变化关系,然后又在上述信道模型幅度响应公式基础上,推导出基于人体信道传输信号的能量检测算法。最后通过仿真给出在频谱检测时间足够长时,不同的信号能量前提下,上文推出的能量检测算法的检测概率随着人体信道长度和信号频率的变化关系。The amplitude response characteristics of body channel in wireless body area networks versus body channel length and signal frequencies are analyzed in this paper. Then the energy detection formula based on the above body channel also are derived to formulate the energy detection algorithm in body area networks. In the end, this paper comes to the following conclusion： the detection possibility based on the derived energy detection algorithm versus channel length and signal frequencies is given in the condition of long enough detection time while signal energy changes from - 128dBm to - 110dBm.

关 键 词：无线体域网 频谱感知 认知无线电 能量检测 

分 类 号：TN925.93[电子电信—通信与信息系统]