Results 91 to 100 of about 15,682 (213)

Jointly designed quasi-cyclic LDPC-coded cooperation with diversity combining at receiver

open access: yesInternational Journal of Distributed Sensor Networks, 2020
This correspondence proposes a jointly-designed quasi-cyclic (QC) low-density parity-check (LDPC)-coded multi-relay cooperation with a destination node realized by multiple receive antennas.
Muhammad Asif   +5 more
doaj   +1 more source

A Survey on Programmable LDPC Decoders

open access: yesIEEE Access, 2016
Low-density parity-check (LDPC) block codes are popular forward error correction schemes due to their capacity-approaching characteristics. However, the realization of LDPC decoders that meet both low latency and high throughput is not a trivial challenge.
João Andrade   +3 more
openaire   +4 more sources

Low-density parity-check codes and their rateless relatives

open access: yes, 2011
This survey guides the reader through the extensive open literature that is covering the family of low-density parity-check LDPC codes and their rateless relatives.
Chen, Sheng   +2 more
core   +2 more sources

Decoder-in-the-Loop: Genetic Optimization-Based LDPC Code Design

open access: yesIEEE Access, 2019
LDPC code design tools typically rely on asymptotic code behavior and are affected by an unavoidable performance degradation due to model imperfections in the short length regime.
Ahmed Elkelesh   +4 more
doaj   +1 more source

Nonbinary LDPC-Coded Modulation System in High-Speed Mobile Communications

open access: yesIEEE Access, 2018
As a class of capacity-approaching codes, nonbinary low-density parity-check (LDPC) codes have attracted much attention because of noticeable performance.
Dan Feng   +5 more
doaj   +1 more source

Sphere-Packing Modulated Space-Time Coding Using Non-Binary LDPC-Coded Iterative-Detection

open access: yes, 2008
A recently proposed Space-Time Block Coding (STBC) signal construction method that combines orthogonal design with sphere packing, referred to here as (STBC-SP), has shown useful performance improvements over Alamouti’s conventional orthogonal design. In
Alamri, Osamah   +9 more
core   +2 more sources

Burst-by-burst Adaptive Joint-Detection CDMA/H.26L Based Wireless Video Telephony using TTCM and LDPC Codes

open access: yes, 2003
A low bit-rate video coding techniques using the H.26L standard codec for robust transmission in mobile multimedia environments are presented. For the sake of achieving error resilience, the source codec has to make provisions for error detection ...
Ng, S.X.   +7 more
core   +2 more sources

Jointed LDPC codes design for half-duplex relay channels

open access: yesTongxin xuebao, 2013
In order to increase the coding gain of decode-and-forward half-duplex relay channel, a jointed LDPC coding structure and its corresponding optimization scheme was proposed. Novel structure made the subcodes of both source and relay nodes as parts of the
Zi-qiang CHEN   +3 more
doaj   +2 more sources

Design of rate-compatible low-density parity-check codes for type-II hybrid ARQ systems

open access: yesTongxin xuebao, 2006
The design of powerful rate-compatible low-density parity-check codes(RC-LDPC)was constructed in zigzag structure for type-II hybrid ARQ systems.The generalized PEG algorithm was used in the process of constructing RC-LDPC codes to improve the ...
WANG Dan, WANG Xin-mei
doaj  

Design of low-density parity-check codes: An overview

open access: yes, 2011
This article provides an overview of the conflicting design tradeoffs of low-density parity-check (LDPC) codes and thus advocates a more holistic approach to their design for wireless channels.
Chen, Sheng   +2 more
core   +1 more source

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