Results 211 to 220 of about 21,530 (259)

Efficient Decoder Implementation for QC-LDPC Codes

2006 International Conference on Communications, Circuits and Systems, 2006
Channel coding is an important building block in communication systems. Low-density parity-check codes is one kind of prominent error correcting codes being considered in next generation industry standards. This paper presents a memory efficient, very high speed decoder architecture suited for quasi-cyclic low-density parity-check codes using modified ...
Jin Sha, Minglun Gao, Zhongjin Zhang, Li li, Zhongfeng Wang   +4 more
openaire   +1 more source

On the Construction of QC-LDPC Codes Based on Integer Sequence With Low Error Floor

IEEE Communications Letters, 2022
Quasi-cyclic low-density parity-check (QC-LDPC) codes have efficient hardware implementation and excellent correcting performance. However, the existence of trapping sets can affect the decoding performance. In this letter, a novel class of QC-LDPC codes
Xiongfei Tao, Xin Chen, Bifang Wang
semanticscholar   +1 more source

Construction of high-girth QC-LDPC codes

2008 5th International Symposium on Turbo Codes and Related Topics, 2008
We describe a hill-climbing algorithm that constructs high-girth quasi-cyclic low-density parity check (QC-LDPC) codes. Given a desired girth, the algorithm can find QC-LDPC codes of shorter block-length in much less time compared with the previously proposed ldquoguess-and-testrdquo algorithm.
null Yige Wang, J.S. Yedidia, S.C. Draper   +2 more
openaire   +1 more source

Performance Analysis of QC-LDPC codes constructed by using Golomb rulers

Asia-Pacific Conference on Communications, 2022
In this paper, we analyzes performance of girth-8 regular QC-LDPC codes constructed using Golomb ruler. We conducted simulations to measure FER performance of QC-LDPC codes constructed by changing the last mark of some optimal Golomb ruler and found the ...
Dae-Son Kim, Inseon Kim, Hyunwoo Cho, Hyojeong Choi, Hong‐Yeop Song   +4 more
semanticscholar   +1 more source

Construction of Irregular Protograph-Based QC-LDPC Codes With Low Error Floor

IEEE Transactions on Communications, 2021
In this article, we design finite-length irregular protograph-based quasi-cyclic (QC) low-density parity-check (LDPC) codes with good waterfall performance and low error floor.
Bashirreza Karimi, A. Banihashemi
semanticscholar   +1 more source

On Disjoint Difference Sets and Their Associated QC-LDPC Codes with Large Girth

2023 IEEE/CIC International Conference on Communications in China (ICCC Workshops), 2023
The disjoint difference set (DDS) has been utilized in recent years to construct quasi-cyclic (QC) low-density parity-check (LDPC) codes without small cycles.
Guohua Zhang, Mengdi Ni, Yi Fang
semanticscholar   +1 more source

Layered TPMP Decoding for QC-LDPC Codes

Applied Mechanics and Materials, 2012
This paper presents a layered two-phase message passing (L-TPMP) decoding algorithm for general quasi-cyclic low-density parity-check (QC-LDPC) codes, which not only achieves high hardware utilization efficiency (HUE), but also brings in great memory block reduction.
Ling Zhao, Yi Hou, Rong Ke Liu
openaire   +1 more source

Joint source channel network coding using QC LDPC codes

2014 International Conference on Communication and Signal Processing, 2014
Motivated to develop a scheme that compresses, gives high throughput and adds robustness against channel noise, a new joint source channel network coding (JSCNC) using Quasi Cyclic Low Density Parity Check (QCLDPC) code is proposed for a sensor network with two source nodes communicating correlated information to multiple destination nodes.
P. Jesy, P. P. Deepthi
openaire   +1 more source

Block Markov Superposition Transmission of Algebraic QC-LDPC Codes for Optical Fiber Communications

Wireless and Optical Communications Conference, 2022
In this paper, a new forward error correcting (FEC) scheme is proposed for optical fiber communication system, which takes the algebraic quasi-cyclic low-density parity-check (QC-LDPC) codes as the component codes in the block Markov superposition ...
Juewei Wang, Chao Chen, Xiao Ma
semanticscholar   +1 more source

Construction of QC-LDPC Codes with Girth $g$ from the Hermite Normal Form of a Matrix

International Symposium on Information Theory
The problem of determining the existence of a protograph-based QC-LDPC code with girth $g$ and shortest blocklength for a prescribed protograph has been investigated in the literature.
Anthony Gómez-Fonseca
semanticscholar   +1 more source