Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18538
Title: On nonlinear decision functions applied to adaptive equalization for fading channels
Authors: Lee, YF
Wang, MZ
Issue Date: 2002
Publisher: IEEE
Source: 2002 IEEE 56th Vehicular Technology Conference proceedings : 24-28 September 2002, Vancouver, Canada : VTC2002-Fall Vancouver : Pathway to ubiquitous wireless communications, v. 4, p. 2508-2511 How to cite?
Abstract: In a previous paper (see Proc. of IEEE Malaysia International Conference on Communication, p.280-4, 2001) we proposed a nonlinear decision function for adaptive equalization in the presence of Rayleigh fading. A conventional decision function in adaptive equalization makes use of a hard decision threshold device to generate a difference signal (sometimes also called error signal) necessary in the process of updating the tap weights of the equalizer. This has the disadvantage of not differentiating a very weak signal from a strong signal. Our proposed nonlinear decision function approach weighs less on weak signals and is shown to provide enhancement over a conventional decision function. In this paper, we attempt to justify the use of the proposed clipped parabolic nonlinear decision function and investigate various possible forms of nonlinear decision functions.
URI: http://hdl.handle.net/10397/18538
ISBN: 0-7803-7467-3
ISSN: 1090-3038
DOI: 10.1109/VETECF.2002.1040673
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