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itpp-4.0.4.tar
- 强大的C++库,综合了Matlab的功能和C的速度,适合于信号处理等领域。最新的2008年3月稳定版本,支持ldpc/turbo编码。
cml[1].1.6.2
- Documentation last updated on June 25, 2006. Contents: (1) Licensing information (2) List of currently supported features. (3) A quick start guide (4) The sim_param structure format. (5) The sim_state structure format. (6) Compiling mex file
verilog LDPC encoder
- 码长1536 扩展因子64的 WIMAX的LDPC 编码器,支持5/6,2/3,3/4,3个码率,需要在顶层做参数修改
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
ConstructQCLDPCgirth4
- Construct the short length of QC LDPC codes without girth 4 and girth 6
girth4_count
- The program can count the number of the girth 4 of LDPC codes.
QC_codes
- 本程序提供了无4环和6环的LDPC好码设计算法。 使用者对照程序前言中的参考文献,可以迅速理解并掌握无4环和6环的LDPC好码的设计技术。-This procedure provides a non-4 ring and 6 ring good LDPC code design algorithm. Foreword to the user control procedures of references, you can quickly understand and grasp the n
girth4_count
- 本程序可检验所设计的LDPC码中的4环个数。LDPC码中的4环决定LDPC码的解码算法是否能够快速收敛,见程序前言中的参考文献。 LDPC码为高性能信道纠错码,已被DVB-s2和IEEE802.16e采纳。-This procedure can be designed to test the LDPC code in ring number 4. LDPC code of 4 Central decision LDPC code decoding algorithm is able to f
4
- 續。。。IEEE協會,最爲代表的IEEE_CAS2008會議上關於LDPC的最新文章-Continued. . . IEEE Society, the most representative meeting IEEE_CAS2008 the latest articles on the LDPC
LDPC
- LDPC奇偶检测校验码的编码,包括一个主程序和4个子程序-LDPC parity check codes encoding detection, including a main program and 4 sub-procedures
LDPCBSN
- 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.
cml
- 1、HSDPA; 2、LTE; 3、turbo code; 4、Mobile WiMAX; 5、LDPC-CML 1.10
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.
LDPCGirth4Test
- 对于Ldpc码,测试其校验矩阵H有无4环的存在,避免因为存在4环影响性能-For Ldpc code, test whether the check matrix H of the existence of loop 4, loop 4 to avoid because of the impact of performance
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.
makeLdpc
- LDPC编码算法, Create R = 1/2 low density parity check matrix M : Number of row N : Number of column method : Method for distributing non-zero element {0} Evencol : For each column, place 1s uniformly at random {1} Evenboth: For each
qc_ldpc-4-4-cycle-test
- ldpc 低密度奇偶校验矩阵 4环、6环检测程序-ldpc 4/6cycle test program
AC-LDPC(4-k)
- 使用matlab编程的的LDPC译码实现,M文件,在matlab平台运行。-LDPC_DECODE POROGRAM
LDPC码编译码算法的研究与实现_李会雅
- 本文首先介绍了几种LDPC码的编译码算法,同时推导了译码错误概率和密度进化 过程,讨论了信道参数的门限效应。接着对LDPC码二分图中长度为4的环进行了深入 研究,提出了一种LDPC码校验矩阵的消4一环生成算法,采用Matlab和VC++融合编程 方式,完成了此算法的程序设计。此算法不仅可生成二进制LDPC码的校验矩阵,并且 对算法修正后,也可生成多进制LDPC码的校验矩阵。采用此算法后可避免LDPC码译 码过程中的重复迭代,显著提高了短帧LDPC码的误比特率性能。同时对不同参数对 L