NDLI: A quadratically constrained decision feedback equalizer for DS-CDMA communication systems

Content Provider	IEEE Xplore Digital Library
Author	Tian, Z. Bell, K.L. Van Trees, H.L.
Copyright Year	1999
Description	Author affiliation: Center of Excellence, George Mason Univ., Fairfax, VA, USA (Tian, Z.)
Abstract	Among multiuser detection techniques for DS-CDMA communication systems, decision feedback equalization (DFE) offers close to optimal steady state performance, but requires a training sequence and suffers from catastrophic error propagation. Minimum output energy (MOE) detection structurally allows blind adaptation but can be severely degraded from the optimal performance under mismatch situations. We propose to combine these two techniques so that close to optimal performance can be achieved without the use of a training sequence while mitigating the effect of error propagation. To achieve this goal, a quadratic inequality constraint is also incorporated. A recursive least squares (RLS) implementation of the proposed robust decision feedback equalizer is derived. Simulation results that illustrate the performance of the proposed detector as compared with standard MOE and DFE detectors are presented.
Starting Page	190
Ending Page	193
File Size	383431
Page Count	4
File Format	PDF
ISBN	0780355997
DOI	10.1109/SPAWC.1999.783051
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decision feedback equalizers Multiaccess communication Multiuser detection Resonance light scattering Detectors Switches Steady-state Constraint optimization Least squares approximation Least squares methods
Content Type	Text
Resource Type	Article

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