NDLI: DA based approach for the implementation of block adaptive decision feedback equaliser

Content Provider	IET Digital Library
Author	Prakash, Matcha Surya Shaik, Rafi Ahamed
Abstract	Adaptive decision feedback equalisers (ADFEs) are used in wireless transmission systems for mitigating the InterSymbol Interference (ISI) that occurs due to multipath propagation of the transmitted signal. In case of high speed communications which involve rapid-varying channels, fast convergent and low complexity ADFEs are required. Frequency domain block processing of signals is an effective means of handling the increased complexities in such high speed systems. However, block ADFEs being inherently non-causal, the feedback filter (FBF) suffers from the lack of unknown decisions in every block computation. In this study, the authors propose an efficient approach for the computation of these unknown decisions. For this, the authors tried to minimise a cost function based on two criteria mean-absolute difference (MAD) and mean-square difference between the ADFE output and the adder that sums up the feedforward filter (FFF) and FBF. A bank of registers which store all the symbols used in the modulation scheme is also utilised for this purpose. Using the proposed solution, the authors recast block ADFE equations in the frequency domain using distributed arithmetic (DA). The algorithm has a good convergence performance and utilises only few computations compared with the existing schemes.
Starting Page	676
Ending Page	684
Page Count	9
ISSN	17519675
Volume Number	10
e-ISSN	17519683
Issue Number	Issue 6, Aug (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/10/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2015.0446
Journal	IET Signal Processing
Publisher Date	2016-08-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Block Adaptive Decision Feedback Equaliser Communication Channel Equalisation And Identification Convergence Performance DA Based Approach Digital Electronics Distributed Arithmetic Electromagnetic Compatibility Equaliser Feedback Feedback Filter Feedforward Feedforward Filter Filtering Method in Signal Processing Filtering Theory Frequency Domain Block Processing Interference Intersymbol Interference ISI Mean-absolute Difference Mean-square Difference Modulation Modulation And Coding Method Modulation Scheme Multipath Propagation Rapid-varying Channel Transmitted Signal Wireless Transmission System
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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

Riemann–Liouville operator-based fractional normalised least mean square algorithm with application to decision feedback equalisation of multipath channels

Blind channel-shortening for multipath channels using a recursive prediction-error filter with additional prediction delay

Equalisation and performance of diffusive molecular communication systems with binary molecular-shift keying modulation

Sign algorithm for blind channel equalisation

Cyclostationarity-based joint sensing and equalisation of fast convolution-based DWPT block-filtered orthogonal frequency division multiplexing for fifth-generation wireless systems

Low-complexity equalisation of doubly selective channels for multiple-input–multiple-output transmission systems

Two-dimensional iterative soft decision interference cancellation turbo equaliser

Two-stage frequency-domain oversampling receivers for cyclic prefix orthogonal frequency-division multiplexing systems

Single-carrier underwater acoustic communication combined with channel shortening and dichotomous coordinate descent recursive least squares with variable forgetting factor

DA based approach for the implementation of block adaptive decision feedback equaliser

Similar Documents

Riemann–Liouville operator-based fractional normalised least mean square algorithm with application to decision feedback equalisation of multipath channels

Blind channel-shortening for multipath channels using a recursive prediction-error filter with additional prediction delay

Equalisation and performance of diffusive molecular communication systems with binary molecular-shift keying modulation

Sign algorithm for blind channel equalisation

Cyclostationarity-based joint sensing and equalisation of fast convolution-based DWPT block-filtered orthogonal frequency division multiplexing for fifth-generation wireless systems

Low-complexity equalisation of doubly selective channels for multiple-input–multiple-output transmission systems

Two-dimensional iterative soft decision interference cancellation turbo equaliser

Two-stage frequency-domain oversampling receivers for cyclic prefix orthogonal frequency-division multiplexing systems

Single-carrier underwater acoustic communication combined with channel shortening and dichotomous coordinate descent recursive least squares with variable forgetting factor

DA based approach for the implementation of block adaptive decision feedback equaliser