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Description: 利用函数MadHG生成规则LDPC码的校验矩阵H，其行重为6,列重为3,行数为列数一半(行数越大越好)，H中任意两列没有围长为4的圈，并得到H对应的生成矩阵G，可以保证mod(G*H ,2)=0。使用方法为:[H,G] = MadHG(m,n,x),x= 1(得到的G左半部分为单位阵) or 2(G右半部分为单位阵),-use function MadHG Generation rules LDPC check matrix H, re-6, series of three, out for a few half of the number (A bigger the better), H 2 arbitrary no girth of the four circles, H counterparts and with the formation of matrix G, we can be assured of mod (G * H, 2) = 0. To be used : [H, G] = MadHG (m, n, x), x = 1 (the G part of the Left Front units) or 2 (G right half of the units RUF),
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Size: 4757 |
Author: 心海 |
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Description: 利用函数MadHG生成规则LDPC码的校验矩阵H，其行重为6,列重为3,行数为列数一半(行数越大越好)，H中任意两列没有围长为4的圈，并得到H对应的生成矩阵G，可以保证mod(G*H ,2)=0。使用方法为:[H,G] = MadHG(m,n,x),x= 1(得到的G左半部分为单位阵) or 2(G右半部分为单位阵),-use function MadHG Generation rules LDPC check matrix H, re-6, series of three, out for a few half of the number (A bigger the better), H 2 arbitrary no girth of the four circles, H counterparts and with the formation of matrix G, we can be assured of mod (G * H, 2) = 0. To be used : [H, G] = MadHG (m, n, x), x = 1 (the G part of the Left Front units) or 2 (G right half of the units RUF),
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Size: 1179 |
Author: 心海 |
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Description: 利用函数MadHG生成规则LDPC码的校验矩阵H，其行重为6,列重为3,行数为列数一半(行数越大越好)，H中任意两列没有围长为4的圈，并得到H对应的生成矩阵G，可以保证mod(G*H ,2)=0。使用方法为:[H,G] = MadHG(m,n,x),x= 1(得到的G左半部分为单位阵) or 2(G右半部分为单位阵),-use function MadHG Generation rules LDPC check matrix H, re-6, series of three, out for a few half of the number (A bigger the better), H 2 arbitrary no girth of the four circles, H counterparts and with the formation of matrix G, we can be assured of mod (G* H, 2) = 0. To be used : [H, G] = MadHG (m, n, x), x = 1 (the G part of the Left Front units) or 2 (G right half of the units RUF),
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Size: 4096 |
Author: 心海 |
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Description: 利用函数MadHG生成规则LDPC码的校验矩阵H，其行重为6,列重为3,行数为列数一半(行数越大越好)，H中任意两列没有围长为4的圈，并得到H对应的生成矩阵G，可以保证mod(G*H ,2)=0。使用方法为:[H,G] = MadHG(m,n,x),x= 1(得到的G左半部分为单位阵) or 2(G右半部分为单位阵),-use function MadHG Generation rules LDPC check matrix H, re-6, series of three, out for a few half of the number (A bigger the better), H 2 arbitrary no girth of the four circles, H counterparts and with the formation of matrix G, we can be assured of mod (G* H, 2) = 0. To be used : [H, G] = MadHG (m, n, x), x = 1 (the G part of the Left Front units) or 2 (G right half of the units RUF),
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Size: 1024 |
Author: 心海 |
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Description: LDPC研究者MacKay提供的校验矩阵H及对应的生成矩阵G，其中H行重为6，列重为3，行数252，列数504.-LDPC researchers MacKay, the calibration matrix H and the corresponding generator matrix G, H which re-6, series of three, the lines 252, 504 Columns.
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Size: 15360 |
Author: 心海 |
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Description: LDPC研究者MacKay提供的校验矩阵H和对应的G，其中H的行重12，列重6，行数504，列数1008，任意两行不含围长为4的圈-LDPC researchers MacKay, the calibration matrix corresponding to the H and G, in which the re-H 12, series 6, a few 504, cited 1008, the two firms were non-arbitrary girth to the ring 4
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Size: 61440 |
Author: 心海 |
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Description: 这是国标数字电视地面传输中生成矩阵的生成程序，只要按照MATLAB的格式输入国标附录1中的数据，就可以生成完整的G矩阵-This is the national standard of digital TV terrestrial transmission matrix generated in the generation process, as long as the input in accordance with the format of MATLAB Appendix 1 GB of data, we can generate the complete G matrix
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Size: 2048 |
Author: 权大广 |
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Description: LDPC码既低密度奇偶校验码（Low Density Parity Check Code，LDPC），它由Robert G.Gallager博士于1963年提出的一类具有稀疏校验矩阵的线性分组码，不仅有逼近Shannon限的良好性能，而且译码复杂度较低, 结构灵活，是近年信道编码领域的研究热点，目前已广泛应用于深空通信、光纤通信、卫星数字视频和音频广播等领域。LDPC码已成为第四代通信系统(4G)
-LDPC codes BER simulation under AWGN channel. MacKay-Neal based LDPC matrix. Message encoding uses sparse LU decomposition. There are 4 choices of decoder: hard-decision/bit-flip decoder, probability-domain SPA decoder, log-domain SPA decoder, and simplified log-domain SPA decoder.
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Size: 8192 |
Author: 天天 |
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Description: 记录我针对数字通信（John.G Proakis）版本学习中编写的仿真程序。
和大家交流共同学习，其中的错误，希望大家指证！
-I look at digital communications records (John.G Proakis) version of the study prepared by simulation program. And to facilitate the exchange of learning, in which the error, hope that means the card!
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Size: 165888 |
Author: 123 |
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Description: introduction to channel noise estimation, it is very important doc for application to LDPC
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Size: 102400 |
Author: yuzhiqiang |
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Description: Low Densitive Parity Checking Codec Simulation for 4G Wireless Network
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Size: 6657024 |
Author: chientm |
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Description: ldpc码在AWGN信道下的性能仿真。包括geth.m,getG.m,H2G.m,decode.m,BER.m按传统的编码方案编码，生成H矩阵后转化为G矩阵，编码后送入高斯信道。仿真得到BER性能-ldpc codes in the AWGN channel performance simulation. Including geth.m, getG.m, H2G.m, decode.m, BER.m coded according to the traditional encoding scheme to generate H matrix is transformed into G matrix encoded into the Gaussian channel. Simulation, the BER performance
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Size: 68608 |
Author: 熊路 |
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Description: 这是关于LDPC信道编码模块设计的程序
打开源程序，先运行gengrate_h.m程序，陆续将码长设置为756bit，列重设置为3，行重设置为9。在Workspace中同时将H、A、B、C、D、E、Hget、Fget、g、Tget这是个变量选择另存为encode_in.mat 格式。再运行main_encode.m进行编码，主程序运行后，在当前目录下，自动生成编码结果文件“encode—out.mat”，这将作为下一次扩频调制仿真实验的的输入信号。最后分别查看Workspace中的变量s（编码前数据）和xyuan（编码后数据）的波形。
对比后，可以看出编码前的数据码片长度为504bit，编码后的码片数据长度为756bit。编码效率=编码前码片长度/编码后码片长度=2/3。-This is about the LDPC channel coding module design process
Open source, first run gengrate_h.m program, phasing out the code length is set to 756bit, column re-set to 3, line weight is set to 9. In the Workspace in the same time, H, A, B, C, D, E, Hget, Fget, g, Tget This is a variable select Save As encode_in.mat format. Then run main_encode.m encoding, the main program running in the current directory, the results of automatically generated code file "encode-out.mat", which will serve as the next simulation of the spread spectrum modulation input signal. Finally, the variables were View Workspace in s (before encoding data) and xyuan (encoded data) waveform.
After comparison, we can see the data before encoding chip length of 504bit, encoded data length of chip 756bit. Coded before coding efficiency = chip length/length of the encoded chip = 2/3.
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Size: 15360 |
Author: 吴健 |
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Description: 生成LDPC校验矩阵H和生成矩阵G的C语言程序-failed to translate
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Size: 7168 |
Author: 离子 |
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Description: 基于高斯消去的LDPC编码程序 改程序主要是将一个一般的校验矩阵化成下三角矩阵，再根据后向递推公式直接得到校验比特值-Of LDPC codes based on Gaussian elimination procedure
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Size: 1024 |
Author: 何仙姑 |
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Description: QC-LDPC信道编码matlab仿真程序，包含生成矩阵G，查找环长度4是否存在等功能-QC-LDPC chanel coding, include G,H generate tools,and find loop 4
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Size: 31744 |
Author: 纪鹏宇 |
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Description: ldpc codes are low dencity paRity checking matrix to check the parity on matrix based g and h algorithm based on algorithm matrix input will be added to this code
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Size: 9216 |
Author: shankar.m |
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Description: matlab生成LDPC的校验矩阵和生成矩阵-matlab generated LDPC parity check matrix and the generator matrix
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Size: 4096 |
Author: zhangshujun |
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Description: 本程序用C语言详细完成LDPC的编码解码（B包括G矩阵的构造，信道信息，BP译码算法）-This procedure using C language to complete the detailed coding LDPC decoding (B including the G matrix structure, channel information, BP decoding algorithm)
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Size: 438272 |
Author: 郑小北 |
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Description: 整合了目前pudn网站上的一些资源，利用PEG算法生成H矩阵，转换成为G矩阵，从而进行高斯编码，BPSK调制。BP迭代的方法解码，解调后进行不同SNR条件下的BER仿真。从而得到误码率曲线。(Some resources on the pudn website are integrated, and the PEG algorithm is used to generate H matrix and convert into G matrix, so as to carry out Gauss coding and BPSK modulation. The BP iterative method decodes and demodulates the BER simulation under different SNR conditions. The error rate curve is obtained.)
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Size: 5120 |
Author: 伯爵1989 |
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