NDLI: Practical relay code design based on protograph codes

Content Provider	IET Digital Library
Author	Rahim, Md. Noor A Ali, G. G. Md. Nawaz Guan, Yong Liang
Abstract	The low-density parity-check (LDPC) code design for three-terminal (namely, source, relay, and destination) relay network while considering decode-and-forward protocol is studied. Numerous works have been done on LDPC relay code design with parity bits forwarding approach, where additional parity bits are generated at the relay and forwarded to the destination. Most of the previous works assume that the forwarded parity bits are received perfectly at the destination and hence ignore the impact of relay–destination channel. This assumption is unrealistic in practical/finite-length codeword scenario. In this study, a protograph based LDPC code design is proposed while lifting the above unrealistic assumption. A Gaussian approximated density evolution is presented for the proposed scheme, which considers that the overall codeword experiences source–destination and relay–destination channels. For various designed codes with different rates, the authors show that the asymptotic thresholds of the designed codes are very close to the corresponding capacity bounds. Asymptotically, our designed code gives similar decoding threshold compared to the existing optimised irregular LDPC codes, while protograph codes are simpler to optimise and encode than the irregular LDPC codes. More importantly, proposed code performs better than the existing LDPC-based relay codes for finite-length scenarios.
Starting Page	334
Ending Page	339
Page Count	6
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 3, Feb (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.1002
Journal	IET Communications
Publisher Date	2017-12-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Approximation Theory Asymptotic Thresholds Capacity Bounds Channel Coding Code Decode And Forward Communication Decode-and-forward Protocol Decoding Threshold Destination Relay Network Finite-length Codeword Gaussian Approximated Density Evolution Gaussian Processes Interpolation And Function Approximation LDPC Relay Code Design Low-density Parity-check Code Design Numerical Analysis Parity Bits Forwarding Approach Parity Check Code Practical Relay Code Design Protocol Protograph Code Radio Link And Equipment Relay Network Relay–destination Channel Source Relay Network Source-destination Channel Statistics Telecommunication Three-terminal Relay Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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

Performance analysis of protograph low-density parity-check codes for Nakagami-m fading relay channels

LDPC coded lossy forwarding scheme for cooperative wireless networks

Low-complexity bound on irregular LDPC belief-propagation decoding thresholds using a Gaussian approximation

Bilayer Low-Density Parity-Check Codes for Decode-and-Forward in Relay Channels

Bilayer LDPC Convolutional Codes for Decode-and-Forward Relaying

Design of protograph codes for additive white symmetric alpha-stable noise channels

Design of Multi-Edge-Type Bilayer-Expurgated LDPC Codes for Decode-and-Forward in Relay Channels

Performance analysis and optimisation for edge connection of JSCC system based on double protograph LDPC codes

Approximation for the ML detector in decode and forward relay networks and the effect of channel estimation error

Practical relay code design based on protograph codes

Similar Documents

Performance analysis of protograph low-density parity-check codes for Nakagami-m fading relay channels

LDPC coded lossy forwarding scheme for cooperative wireless networks

Low-complexity bound on irregular LDPC belief-propagation decoding thresholds using a Gaussian approximation

Bilayer Low-Density Parity-Check Codes for Decode-and-Forward in Relay Channels

Bilayer LDPC Convolutional Codes for Decode-and-Forward Relaying

Design of protograph codes for additive white symmetric alpha-stable noise channels

Design of Multi-Edge-Type Bilayer-Expurgated LDPC Codes for Decode-and-Forward in Relay Channels

Performance analysis and optimisation for edge connection of JSCC system based on double protograph LDPC codes

Approximation for the ML detector in decode and forward relay networks and the effect of channel estimation error

Practical relay code design based on protograph codes