NDLI: Pre-Rake performance for pulse based UWB system in a standardized UWB short-range channel

Content Provider	IEEE Xplore Digital Library
Author	Usuda, K. Honggang Zhang Nakagawa, M.
Copyright Year	2004
Description	Author affiliation: Dept. of Inf. & Comput. Sci., Keio Univ., Yokohama, Japan (Usuda, K.)
Abstract	The pre-Rake scheme for pulse based ultrawideband (UWB) communications system is proposed in a standardized UWB channel model from IEEE 802.15 SG3a, which is based on an extensive set of indoor short-range channel measurements in this paper. The pre-Rake scheme is shown to contribute to the low-power, cost-effective UWB system designing as well as Rake combining gain. Instead of building a Rake receiver at the receiving side (e.g. portable unit), the transmitter (e.g. access point) can pre-diversity the UWB signal before transmission in the forward link estimating the channel impulse response from the reverse link. While the pre-Raked signal is convolved with the estimated channel impulse response, the function of Rake combining at the receiver is automatically performed. Monte-Carlo simulations are carried out to compare the pre-Rake with Rake results and show that pre-Rake scheme is as good as Rake combining. Then the mobile or portable unit with a conventional receiver can still achieve the diversity gain of Rake combining.
Starting Page	920
Ending Page	925
File Size	317922
Page Count	6
File Format	PDF
ISBN	0780383443
ISSN	15253511
DOI	10.1109/WCNC.2004.1311309
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-03-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Multipath channels RAKE receivers Computer science Pulse measurements Ultra wideband technology Diversity reception Signal resolution Ultra wideband communication Network topology
Content Type	Text
Resource Type	Article

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