The performance of ultra wideband acquisition system based on energy detection over IEEE 802.15.3a channel  

作　　者：YANG ZhiHua ZHANG QinYu ZHANG NaiTong WANG Ye 

机构地区：[1]Communication Engineering Research Center, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China

出　　处：《Science China(Information Sciences)》2011年第2期360-370,共11页中国科学（信息科学）（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 60432040, 60702034)

摘　　要：In this paper, we propose a theoretical framework to analyze the performance of ultra wideband acquisition （UWB） system based on energy detection （ED） over IEEE 802.15.3a channel. The proposed framework enables to calculate probability density function （PDF） of square-sum of multipath components （MPCs） gain collected by receiver, and the averaged criteria. In particular, the expectation and variance of the sum variant characterized approximately by log-normal distribution are expressed in a closed form based on cluster point process. Moreover, the calculating methods of averaged criteria, through Markov chain model and signal flow graph, are clearly demonstrated for different applicable scenarios. The proposed framework is well consistent with simulation results with respect to each calculation method.In this paper, we propose a theoretical framework to analyze the performance of ultra wideband acquisition （UWB） system based on energy detection （ED） over IEEE 802.15.3a channel. The proposed framework enables to calculate probability density function （PDF） of square-sum of multipath components （MPCs） gain collected by receiver, and the averaged criteria. In particular, the expectation and variance of the sum variant characterized approximately by log-normal distribution are expressed in a closed form based on cluster point process. Moreover, the calculating methods of averaged criteria, through Markov chain model and signal flow graph, are clearly demonstrated for different applicable scenarios. The proposed framework is well consistent with simulation results with respect to each calculation method.

关 键 词：UWB energy detection unconditional criterion cluster point process 

分 类 号：TN925.93[电子电信—通信与信息系统] TP274[电子电信—信息与通信工程]