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PEG_LDPC.rar
- 引入PEG（Progressive-edge-growth）算法来构造适合线性时间编码的LDPC校验矩阵，译码时采用简化最小和Min-Sum译码算法实现简化译码．仿真结果表明，该方法能够构造适合LDPC码的线性时间编码的下三角校验矩阵日，并且用此方法构造的LDPC码性能非常接近原来PEG算法构造的LDPC码．同时通过采用最小和Min-Sum算法降低译码复杂度．,The introduction of PEG (Progressive-edge-growth) algorithm to const
LDPC.rar
- LDPC码编译码源程序，可生成任意非规则二进制校验矩阵，并可进行LLR BP译码,LDPC codec source code can be generated non-arbitrary rules binary check matrix, LLR BP decoding can be carried out
kmplot
- 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 si
H_1024x2048
- LDPC 码二进制规则码生成矩阵1024*2048，效果很理想-LDPC code rules binary code matrix to generate 512* 1024, the effect is very satisfactory
H_2048x4096
- LDPC 码二进制规则码生成矩阵2048*4096，效果很理想-LDPC code rules binary code generated matrix 2048* 4096, the effect is very satisfactory
Girth-twelveQC-LDPC
- The program constructs girth-twelve column-weight QC-LPDC codes. The rate can be changed by changing k(row-weight), size is changed by varying m(sub-matrix size).
Girth-eightQC-LDPC
- The algorith divides rows in to four equal groups. The rows are then used to from a distance graph which is then transformed into a matrix. girth of eight is maintained by avoiding six-cycles in the graph construction
generate_G
- 数字电视标准矩阵及其生成矩阵源代码（LDPC)-Digital TV standard matrix and matrix to generate the source code (LDPC)
H_512x1024
- LDPC 码二进制规则码生成矩阵512*1024，效果很理想-LDPC code rules binary code matrix to generate 512* 1024, the effect is very satisfactory
genH
- LDPC非规则二进制校验矩阵生成函数，可生成任意规格的校验矩阵-Irregular LDPC binary check matrix generating function, can generate arbitrary specifications checksum matrix
LDPC
- 将wimax结构化表示转为校验矩阵，用于LDPC编码仿真，适用于类似wimax中，结构化LDPC码的设计。-Wimax will be structured to express check matrix for LDPC code simulation, applicable to similar wimax, the structured LDPC code design.
GallagerLDPC
- Gallager LDPC码构造法，根据H0矩阵写出其它子矩阵。-Gallager LDPC code construction method, in accordance with other write H0 matrix matrix.
check_ldpc_4ring
- 计算ldpc低密度奇偶校验矩阵中4环的个数。-Ldpc calculated low-density parity-check matrix of the number of ring 4.
const_ldpccc_mat
- Low density parity check matrix-Descr iption A program written for generating LDPC matrix in the as pattern as discussed in the research paper , " Time varying periodic convolutional codes with low density parity check matrix" by Alberto
girth6_shifter
- Flexible construction of girth-six QC-LDPC Codes-The program constructs girth-six QC-LDPC codes given row-weight,k, column-weight,j, and sub-matrix size,m. The obtained parity-check matrix is stored in H. The construction has flexibility in that j,k
QC_codes
- Construct the short length of QC LDPC codes without girth 4 and girth 6-The Program to construct the short length of QC LDPC codes without girth 4 and girth 6 Copyright (C) Yang XIAO, Jun FAN, BJTU, July 26, 2007, E-Mail: yxiao@bjtu.edu.cn.
LDPC_BSN
- 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 si
LDPC-v0.2 (2)
- define the matrix generator of the LDPC decoder
LDPC
- LDPC信道编码仿真。generate_h.m生成校验矩阵H。用main_encode.m程序载入校验矩阵信息，用encode.m进行编码。(LDPC channel coding simulation. Generate_h.m generates parity check matrix H. Load the check matrix information with main_encode.m program and encode with encode.m.)
LDPC
- 1） 生成具有大小的LDPC奇偶校验矩阵。 2） 使用BF算法对使用1）生成的码字进行解码。 3） 给出解码算法在BPSK调制和AWGN信道下，信噪比为1、1.5、2、2.5、3db时的误码概率。(1)Generate a parity check matrix of LDPC with size . 2)Use the BF algorithm to decode a codeword generated by using 1). 3)Give the bit error probabilit