Abstract
In this paper the sampling, quantization and processing of an ultra-wideband (UWB) impulse radio (IR) receiver signal is considered when the propagation link is subjected to additive white Gaussian noise (AWGN) and narrow band interference (NBI) which may be non-Gaussian. The Neyman Pearson log likelihood ratio formulation results in receiver processing that consists of a Generalized Matched Filter (GMF) and linear sampling which exploits the correlation of the NBI noise to effectively suppress it. However, the processing requirements to implement the GMF are prohibitive in the context of an UWB IR. Hence an alternate highly efficient processing scheme based on crude 2 and 3 level quantization with maximum ratio combining (MRC) Rake processing is considered and analyzed. As demonstrated in this paper, the 3 level quantizer is an excellent compromise between receiver performance and computational efficiency and can in some cases exceed the performance of a comparable Rake receiver using linear sampling. This happens in some practical instances when the noise is non-gaussian as will be demonstrated.
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References
M.Z.Win, “Ultra-Wide Bandwidth Spread-Spectrum Techniques for Multiple-Access Communications”, PhD Dissertation, University of Southern California, 1998.
L. Zhao and A.M. Haimovich, “Performance of Ultra-Wideband Communications in the Presence of Interference”, IEEE Journal on Selected Areas in Communications, Vol. 20, No. 9, pp.1684–1691, Dec. 2002.
T. Ikegami and K. Ohno, “Interference Mitigation Study for UWB Impulse Radio”, 14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, Vol. 1, pp. 583–587, Sept. 2003.
M. Mittelbach, C. Muller, D. Ferger, and A. Finger, “Study of Coexistence Between UWB and Narrowband Cellular Systems”, International Workshop on Ultra Wideband Systems, Joint with Conference on Ultra Wideband Systems and Technologies. Joint UWBST & IWUWBS, pp. 40–44, May 2004.
I Bergel, E. Fishler, and H. Messer, “Narrowband Interference Suppression in Time-Hopping Impulse-Radio Systems”, IEEE Conference on Ultra Wideband Systems and Technologies 2002, Digest of Papers, 21–23 May 2002, pp. 303–307
S. Kay, Fundamentals of Statistical Signal Processing – Detection Theory, Prentice Hall, 1998.
D.R. McKinstry and R.M. Buehrer, “LMS Analog and Digital Narrowband Rejection System for UWB Communications”, IEEE Conference on Ultra Wideband Systems and Technologies, pp. 91–95, Nov. 2003.
W. Namgoong, “A Channelized Digital Ultra Wideband Receiver”, IEEE Transactions on Wireless Communications. Vol 2, No. 3, May 2003.
R. Pasand, J. Nielsen and A. Sesay, “UWB Receiver Based on Filter Bank Architecture for Suppression of Narrowband Interference Noise”, Proc of IEEE MILICOM 2004, Monterey, CA, Nov. 2004.
J. Proakis, Digital Communications, 4th edition, McGraw Hill, 2001.
R. Gallager, Information Theory and Reliable Communication, John Wiley, 1968.
A. Papoulis, Probability, Random Variables and Stochastic Processes, McGraw Hill, 1965.
F. Chapeau-Blondeau, “Nonlinear Test Statistic to Improve Signal Detection in Non-Gaussian Noise”, IEEE Signal Processing Letters, Vol. 7, No. 7, pp. 205–207, July 2000.
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John Nielsen obtained his BASc and MSc from the University of Toronto in 1981 and 1983 respectively and his PhD from the University of Ottawa in 1990. He became a faculty member of the Department of Electrical and Computer Engineering of the University of Calgary in 2002 as an Associate Professor. He is also an affiliated researcher with Telecommunications Research Laboratory of Calgary. His primary research interests are in physical layer wireless communication systems. Prior to his faculty position, Dr. Nielsen was with Research in Motion and Nortel.
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Nielsen, J. Optimal Sampling and Processing of an Impulse Radio Signal Subjected to Narrow Band Interference. Wireless Pers Commun 36, 79–93 (2006). https://doi.org/10.1007/s11277-006-8032-2
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DOI: https://doi.org/10.1007/s11277-006-8032-2