电讯技术Issue(12)：1678-1682,5.DOI:10.3969/j.issn.1001-893x.2014.12.017
穿戴式超宽带接收机误码率性能分析
Bit Error Rate Performance Analysis of On-body Ultra Wideband Receiver for Wireless Body Area Networks
摘要
Abstract
A method of analyzing bit error rate( BER) based on channel model of on-body Ultra Wideband ( UWB) networks is proposed with consideration of various structures of RAKE receiver,the angle between transmitter's antenna and receiver's antenna and the way of signals' decision. Digital storage oscilloscope is adopted to acquire received signal of time domain and CLEAN deconvolution algorithm is used to get the impulse response of body channel in the line-of-sight condition of body surface to body surface and body surface to external. Various structures and branch number of RAKE receivers are applied to receive the time-hopping signal accompanied with additive white Gaussian noise and so BER can be analyzed. The simulation results show that absolute RAKE receiver has best BER performance while it has the most com-plex structure. For the same branch number,partial RAKE receiver's BER is nearly 3 dB degraded than se-lective RAKE's but it has lower complex structure. In order to reduce multipath components due to body re-flection and get better BER and inter-symbol interference ( ISI ) , results show that vertical angle between transmitter's antenna and receiver's antenna should be avoided. For repetition code,the BER performance of soft decision is 0. 2~0. 4 dB better than hard decision. The channel model and BER performance analy-sis provide references for UWB transceivers design and performance evaluation.关键词
无线体域网/超宽带/RAKE接收机/误码率分析/人体信道冲激响应Key words
wireless body area network/UWB/RAKE receiver/BER analysis/impulse response of body channel分类
信息技术与安全科学引用本文复制引用
徐卫林,吴迪,覃玉良,韦保林,段吉海..穿戴式超宽带接收机误码率性能分析[J].电讯技术,2014,(12):1678-1682,5.基金项目
国家自然科学基金资助项目(61264001,61166004,61161003) （61264001,61166004,61161003）
广西自然科学基金资助项目(2013GXNSFAA019333) （2013GXNSFAA019333）
桂林电子科技大学博士启动基金项目(UF12001Y) （UF12001Y）
桂林电子科技大学研究生教育创新计划资助项目(GDYCSZ201457)@@@@Foundation Item:The National Natural Science Foundation of China(No.61264001,61166004,61161003) （GDYCSZ201457）
The Natural Science Foundation of Guangxi(2013GXNSFAA019333) （2013GXNSFAA019333）
The Doctoral Scientific Research Foundation for Guilin University of Electronic Technolo-gy(UF12001Y) （UF12001Y）
Innovation Project of Guilin University of Electronic Technology Graduate Education(GDYCSZ201457) （GDYCSZ201457）
