NDLI: Ranging in multi-band communication systems

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	We present a new scheme to refine the range and time resolution of multi-band communication systems. The resolution of range or delay estimation in any communication system is inversely proportional to the bandwidth of the transmitted signal. In a multi-band system where only a portion of the total bandwidth is available to any transmission, the resolution appears to be proportional to the inverse of the bandwidth of a sub-band. In this paper we describe a scheme that coherently processes received signals from different sub-bands to achieve a resolution proportional to the inverse of the total system bandwidth. We show that in the high signal to noise ratio regime this scheme outperforms conventional schemes, such as averaging the estimates from different sub-bands to reduce the effect of noise. In particular, we show that the resolution we achieve is inversely proportional to the number of sub-bands while that of traditional schemes is inversely proportional to the square root of the number of sub-bands. We provide simulation results to show the performance of the scheme in additive white Gaussian noise. We also study the effect of oscillator phase mismatches that occur when switching from one sub-band to another.
Starting Page	2248
Ending Page	2251
File Size	286860
Page Count	4
File Format	PDF
ISBN	0780382552
ISSN	15502252
DOI	10.1109/VETECS.2004.1390674
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-05-17
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal resolution Bandwidth Signal processing OFDM Wireless personal area networks Proposals Delay estimation Signal to noise ratio Switches Noise reduction
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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