NDLI: Enhanced localization in wireless personal area networks

Content Provider	IEEE Xplore Digital Library
Author	Saberinia, E. Tewfik, A.H.
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA (Saberinia, E.; Tewfik, A.H.)
Abstract	In this paper, we consider the problem of providing highly accurate time delay or ranging estimates using multiple receptions of ranging signals in multi-band communication systems. We describe a novel ranging approach that reduces the variance of the time delay estimate by M/sup 3/ in white Gaussian noise. The new technique synthesizes the return corresponding to a virtual large bandwidth signal by appropriately merging the returns of M low bandwidth ranging signals from M different sub-bands. These low bandwidth signals can be generated by decomposing a high time resolution large bandwidth signal using a full-tree wavelet decomposition filter bank. The corresponding perfect reconstruction synthesis filter bank is used at the receiver to combine the received signals. Alternatively, we show that the procedure can rely on the preamble sequences used in the proposed IEEE 802.15.3a wireless PAN standard and other communication systems. We study the effect of fading and multipath channels on the performance of the proposed scheme. Simulation results are provided to compare the performance of this scheme with traditional ones.
Starting Page	2429
Ending Page	2434
File Size	617649
Page Count	6
File Format	PDF
ISBN	0780387945
DOI	10.1109/GLOCOM.2004.1378443
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless personal area networks Bandwidth Delay effects Delay estimation Signal synthesis Filter bank Gaussian noise Merging Signal generators Signal resolution
Content Type	Text
Resource Type	Article

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