FPGA implementation of adaptive code rate QC-LDPC encoder [PDF]
, 2008 准循环低密度奇偶校验码(QC-LDPC codes)相比其他的LDPC码具有简单的编码结构,拥有较好的应用前景。通过构造校验矩阵设计了不同码率和不同帧长的具有系统结构的QC-LDPC码,并分析了这些码的性能,随后将编码过程分阶段引入主从控制模块及复用基本SRAA组,设计了变码率和变帧长的编码器,并用Verilog HDL语言在Spartan 3 3s1500fg676芯片上实现了编码器的设计。综合报告表明:在使用适中的硬件资源情况下,系统最大频率达到了174.856 MHz,能满足高速编码的要求 ...
张文俊, 王琳, 徐哲鑫
core
Design of low-density parity-check codes: An overview [PDF]
, 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
Explicit construction of girth-eight QC-LDPC codes and its application in CRT method
Tongxin xuebao, 2012 For arbitrary code lengths of the form PL(P≥3L<sup>2</sup>/4+L-1),a new family of (4,L)-regular quasi-cyclic (QC) low-density parity-check (LDPC) codes was proposed explicitly with girth ight.Employing the new code as a component code in the ...
Guo-hua ZHANG, Rong SUN, Xin-mei WANG
doaj +2 more sources
Quantum Coding via Quasi-Cyclic Block Matrix. [PDF]
Entropy (Basel), 2023 Li Y, Li JY.
europepmc +1 more source
Applications of rate-compatible QC-LDPC codes in underwater acoustic communication [PDF]
, 2014 针对水声信道复杂多变、强多途和大起伏干扰等特点,提出采用码率兼容QC-ldPC码的自适应信道编码技术,以提高水声数据传输的可靠性和水声信道的信道吞吐率。建立了码率兼容QC-ldPC码在水声信道中的仿真模型,构造码率为1/2、2/3…5/6等一系列QC-ldPC码,在三种典型的水声信道中对其性能进行仿真。结果表明所设计的码率兼容QC-ldPC码在三种不同信道下可行有效,能较大地提高水声通信系统的性能。由于信道时延越长、信噪比越低,满足通信指标的码率就越低;并给出码率兼容QC ...
林梅英, 许肖梅, 张兰, 陈友淦
core
Rate-Compatible LDPC Codes for Continuous-Variable Quantum Key Distribution in Wide Range of SNRs Regime. [PDF]
Entropy (Basel), 2022 Fan X, Niu Q, Zhao T, Guo B.
europepmc +1 more source
Application analysis of QC-LDPC codes in shallow water acoustic channels [PDF]
, 2011 Conference Name:2011 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2011. Conference Address: Xi'an, China. Time:September 14, 2011 - September 16, 2011.IEEE Xi'an Section; IEEE Hong Kong Section; Northwestern ...
Xu, Xiaomei +6 more
core
Analysis and Optimization of a General Linking Matrix for JSCC Scheme Based on Double LDPC Codes. [PDF]
Entropy (Basel), 2023 Chen Q, Xu Z, Wu H, Cai G.
europepmc +1 more source
Lossy P-LDPC Codes for Compressing General Sources Using Neural Networks. [PDF]
Entropy (Basel), 2023 Ren J, Song D, Wu H, Wang L.
europepmc +1 more source
Low-Complexity Multi-Size Circular-Shift Network for 5G New Radio LDPC Decoders. [PDF]
Sensors (Basel), 2022 Nguyen TT, Nguyen TTB, Lee H.
europepmc +1 more source