NDLI: An analysis of nonlinear direct-sequence correlators

Content Provider	IEEE Xplore Digital Library
Author	Aazhang, B. Poor, H.V.
Copyright Year	1972
Abstract	An analysis of the performance of nonlinear correlation reception of direct-sequence signals in single- and multiuser channels is presented. The communications channel is modeled as containing non-Gaussian background noise and, in some cases, multiple-access interference as well. The error-probability behavior is studied asymptotically as the lengths of the spreading codes increase without bound, and conditions on the spreading sequences are obtained that assure asymptotic achievement of single-user performance in a multiuser system. A long-spreading sequence approximation to the average error probability is also derived, and this result is applied to the analysis of smooth-limiting correlation receivers in impulsive channels. Simulation results are also provided to verify the analysis. Average bit-error probabilities are computed by Monte Carlo simulations for linear, hard-limiting, and smooth-limiting correlation receivers in both single- and two-user impulsive channels. The simulation results are compared to the error rates by asymptotic approximations for the smooth limiter and also to those from previous studies on linear and hard-limiting correlators.<>
Starting Page	723
Ending Page	731
Page Count	9
File Size	997848
File Format	PDF
ISSN	00906778
Volume Number	37
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Correlators Computational modeling Signal analysis Performance analysis Multiuser channels Communication channels Background noise Multiple access interference Error probability Analytical models
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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