想法1对应的程序是ldpcdecoderbp1和ldpcdecoderminsum,想法2对应的程序是ldpcdecoderbp2和ldpcdecoderminsum2。实验证明,程序对应的校验矩阵如本代码所附时,采用方式1运行效率高。 算法 置信传播 以下内容是置信传播算法的编程具体实现方式,按上述思路1编写对应ldpcdecoderbp1 LDPC译码过程
matlab simulation Acknowledgements Inspired: yongsk/bpDecoder, Message Passing Algorithm for Decoding Binary LDPC Codes Community Treasure Hunt Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! Generating CUDA Code from MATLAB: Accelerating Embedded Vision...
The decoder can change the estimated precision adaptively through the result of the analysis method. The steps and the examples are also given. In the end, a flexible SNR estimation algorithm and the validity simulation are presented.Keywords; LDPC code; signaletOAnoise ratio; belief propagation; ...
想法1对应的程序是ldpcdecoderbp1和ldpcdecoderminsum,想法2对应的程序是ldpcdecoderbp2和ldpcdecoderminsum2。实验证明,程序对应的校验矩阵如本代码所附时,采用方式1运行效率高。 算法 置信传播 以下内容是置信传播算法的编程具体实现方式,按上述思路1编写对应ldpcdecoderbp1 LDPC译码过程可以用Tanner图直观表示,如图 1所...
程序说明 V0.0 2015/1/24LDPC译码算法代码概述 概述 本文介绍了包括LDPC_Simulation.m, ldpcdecoderbp1.m,ldpcdecoderminsum.m, ldpcdecoderbp2.m,ldpcdecoderminsum2.m在内的MATLAB代码的编写思路,基本原理和功能,具体代码可见文后。本文暂不涉及LDPC校 ...
encoding method, decoding method is introduced and the simulation with MATLAB, expounds the contents. In the actual design, the random construction rate parity check matrix of 1/2 as example, structure of the parity check matrix is described, complete the coding part. And then use BP algorithm...
置信传播算法[3-4]BP(Belief-propagation decoding algorithm)是很重要的一类基于LDPC码的译码算法,因其具有严格的数学结构和良好的性能,可以对译码算法的性能做定量分析。修正最小和(MMSP)译码算法[5]实际采用的是BP算法机制,虽然具有较低复杂度并保持良好的性能,但在实际应用中会占用大量硬件资源,且译码延时较长。
算法1:LDPC码的NWRBP算法译码流程 2 ENWRBP算法机制描述 由于RBP译码算法和NWRBP译码算法每次通过一条边或是一个校验节点去更新传播消息,这样会形成一个个相对独立彼此没有影响的子集合,经过数次迭代后,可能就会导致忽略掉已经被正确修改的错误比特节点,再一次出现错误,所以,RBP算法和NWRBP算法都具有一定的贪婪性。
(encoderCfg);% The default algorithm is "bp"decoderCfg2 = ldpcDecoderConfig(encoderCfg,"norm-min-sum"); M = 4;% Modulation order (QPSK)snr = [-2 -1.5 -1]; numFramesPerCall = 50; numCalls = 40; maxNumIter = 20; s = rng(1235);% Fix random seederrRate = zeros(length(snr)...
thisthesisproposesafour-layerparallellayereddecoderarchitecturebasedontheideasoflow complexityandlowhardwareresourceconsumption.Eachsub-moduleisdesignedand validated,andthedecoderisultimatelyimplementedonanFPGA.ThroughVivadosynthesis andsimulation,thedecoderachievesamaximumclockfrequencyof170MHzanda throughputof2.7Mbps,which...