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Evaluation of selective Rake receiver in direct sequence ultra wideband communications
Evaluation of selective Rake receiver in direct sequence ultra wideband communications
Rahman, Mohammad Azizur
5985
Sasaki, Shigenobu
5986
Zhou, Jie
5987
Muramatsu, Shogo
5988
Kikuchi, Hisakazu
5989
ultra wideband
selective Rake receiver
spreading bandwidth
power delay profile
partial band interference
Performance of selective Rake (SRake) receiver is evaluated for direct sequence ultra wideband (DS-UWB) communications considering an independent Rayleigh channel having exponentially decaying power delay profile (PDF). BEP performances are shown. The results obtained are compared with similar results in a channel having flat PDP. Assumption of a flat PDP is found to predict the optimum spreading bandwidth to be lower and sub-optimum operating performance beyond optimum spreading bandwidth to be severely worse than that is achievable in a channel having exponentially decaying PDP by employing an SRake receiver having fixed number of combined paths. Optimum spreading bandwidth for SRake in a channel having exponentially decaying PDP is shown to be much larger than the one in a channel having flat PDP; that is specifically a good-news for UWB communications. Effects of partial band interference are also investigated. Interference is found to be less effective in exponentially decaying PDP.
journal article
The Institute of Electronics, Information and Communication Engineers
2004-07
application/pdf
IEICE transactions on fundamentals of electronics, communications and computer sciences
7
E87-A
1742
1746
IEICE transactions on fundamentals of electronics, communications and computer sciences
AA10826239
09168508
https://niigata-u.repo.nii.ac.jp/record/1874/files/1_0010.pdf
eng
http://www.ieice.org/jpn/trans_online/
copyright©2004 IEICE(許諾番号07RB0183)