NDLI: Decision feedback equalization of data with spectral nulls

Content Provider	IEEE Xplore Digital Library
Author	Doherty, J.F.
Copyright Year	1990
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA (Doherty, J.F.)
Abstract	An adaptive decision-feedback equalizer (DFE) update algorithm called the row-action projection (RAP) algorithm is presented. It does not suffer from the numerical stability and noise amplification problems of conventional adaptive equalization algorithms, and it offers linear computational complexity and fast tracking capability. Simulation results are presented that compare the algorithm to the conventional least-mean-squares (LMS) and recursive least squares (RLS) algorithms for decision-feedback equalization of a time-varying, bandlimited channel. The RAP algorithm is based on multiple use of the filter state vectors, viewed as rows of the system data matrix. The multiple updates have a geometric interpretation as projections toward the hyperplanes described by the rows of the system data matrix. The algorithm provides improved performance over the conventional LMS and RLS algorithms for DFE equalization of data whose frequency spectrum contains nulls as well improved mean square error (MSE) at the output of the DFE compared to the RLS algorithm for spectrally nulled data corrupted by noise.
Starting Page	76
Ending Page	80
File Size	353553
Page Count	5
File Format	PDF
DOI	10.1109/MILCOM.1990.117388
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-09-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decision feedback equalizers Resonance light scattering Least squares approximation Numerical stability Adaptive equalizers Computational complexity Computational modeling Least squares methods Filters Vectors
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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