Impact of Timing Jitter on DS-UWB and Hybrid DS-Multiband-UWB Systems with Rake Reception over Multipath Environment(Papers Selected from 2005 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC

元データ 2006-06-01 社団法人電子情報通信学会

概要

In this paper, the impact of timing jitter in direct sequence ultra wideband (DS-UWB) system is investigated over multipath fading channel. Also, a novel hybrid direct sequence multiband UWB (DS-MB-UWB) system is proposed to mitigate the impact of timing jitter. We analyze and compare the system performance for conventional DS-UWB and hybrid DS-MB-UWB with Rake receiver in the presence of timing jitter over additive white Gaussian noise (AWGN) and multipath channel. Theoretical framework is developed to calculate the amount of average energy captured in the multipath profiles and symbol error rate (SER) considering the presence of timing jitter. It is found that DS-MB-UWB system, which employs multiple sub-bands is more jitter-robust than conventional DS-UWB systems. Besides, timing jitter is found to have different impacts on DS-UWB and DS-MB-UWB systems corresponding to different parameters such as number of sub-bands employed, pulse shape, center frequency, bandwidth, number of combined paths in Rake receiver, and channel power delay profile (PDP). These different impacts are analyzed and discussed in the paper.

著者

Sum Chin Niigata Univ. Niigata Jpn
SASAKI Shigenobu Department of Electrical and Electronic Engineering, Niigata University
KIKUCHI Hisakazu Department of Electrical and Electronic Engineering, Niigata University
Sasaki Shigenobu Department Of Electrical And Electronic Engineering Niigata University
Sum Chin Department of Electrical and Electronic Engineering, Niigata University
Sum Chin Department Of Electrical And Electronic Engineering Niigata University
Sasaki S Department Of Electrical And Electronic Engineering Niigata University
Kikuchi Hisakazu Niigata Univ. Niigata Jpn
Kikuchi Hisakazu Dept. Of Electrical And Electronic Eng. Niigata University
Kikuchi Hisakazu Department Of Electrical And Electronic Engineering Graduate School Of Science And Technology

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