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Description: 有关低密度奇偶校验码的一些matlab仿真程序，提供给大家。
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Size: 1522577 |
Author: 杨柳 |
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Description: LDPC码在TD-SCDMA系统中的应用仿真程序，非常具有创新性，希望对大家有帮助-LDPC codes in TD-SCDMA system simulation program is very innovative, I hope all of you help
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Size: 993280 |
Author: 李白 |
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Description: 有关低密度奇偶校验码的一些matlab仿真程序，提供给大家。-LDPC code relating to a number of matlab simulation program, available to everyone.
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Size: 1859584 |
Author: 杨柳 |
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Description: 有关ldpc编码理论方面的博士论文，希望对大家有所帮助-LDPC coding theory on the doctoral thesis, I hope all of you to help
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Size: 6986752 |
Author: 盛国芳 |
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Description: 网上找的关于LDPC码的学习资料，希望对大家有用。-Online on the LDPC code to find the learning materials, useful for all of us hope.
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Size: 637952 |
Author: wanghanjing |
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Description: MIMO信道容量仿真，出自于经典MIMO书籍源码-his chapter contains sample programs for determining capacity. The reader is advised to go through the coding. The
file "capacity_water.m" is for measuring the waterfilling capacity. It should be made to work with a file similar to
"capacity_plot_main.m". The latter file deals with all the other capacity plots given in the book in Chapter 2.
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Size: 4096 |
Author: XY |
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Description: LDPC decoder for Chinese DTV standard. This code works for all code rate,only need to change is Paritycheck matrix.I have tried with 1/2 code rate.
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Size: 1024 |
Author: Abhijeet |
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Description: 低密度奇偶检验码与分层空时码的级联仿真，具有很高的价值，希望对大家有用。-Low-density parity check codes and layered space-time codes of the cascade simulation, with a very high value and hope for all of us.
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Size: 9216 |
Author: 张力 |
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Description: Turbo码，LDPC码（低密度奇偶校验码）均具有接近Shannon限的性能，
是目前便译码研究的热点。Turbo码在低信噪比情况下的性能优于其它各种编码
方式。而LDPC码的描述简单，具有较大的灵活性，当码长足够长时具有比Turbo
码更为良好的性能，其译码复杂度低于Turbo码。-Turbo code, LDPC code (LDPC) all have close to Shannon limit performance, it is the firm' s research focus. Turbo codes at low SNR is superior to other kinds of encoding. The simple description of LDPC codes with greater flexibility, when code length is long enough, have a much more favorable than the Turbo code performance, its decoding complexity than Turbo codes.
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Size: 700416 |
Author: 欢欢牛 |
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Description: 有关低密度奇偶校验码的一些matlab仿真程序-The number of low-density parity check codes matlab simulation program
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Size: 1522688 |
Author: 张嘉 |
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Description: LDPC编码解码的实用程序 本人经过一年多的项目完成，全部可用 吐血奉献-LDPC codec utility projects I have completed more than a year, all contributions can be vomiting blood
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Size: 22528 |
Author: 离子 |
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Description: 全零码QC-LDPC系统程序，用于信道编码，参数可修改-All-zero yards QC-LDPC system program for channel coding, the parameters can be modified
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Size: 17408 |
Author: 林梅英 |
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Description: This code simulates the peak to noise power ratio of ldpc coded mimo systems
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Size: 31744 |
Author: navi |
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Description: ldpc的编码和译码方法，译码我验证过了，都是对的，包括wbf和bf译码方法，编码方法包括四种不同的编码方法-LDPC encoding and decoding method, decoding I verified, all is right, including any WBF and bf decoding method, the encoding methods include four different coding methods
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Size: 160768 |
Author: 孙孙 |
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Description: Specify the condition to stop the decoding iterations as one of Maximum iteration count | Parity check satisfied . The default is Maximum iteration count . When you set this property to Maximum iteration count , the object will iterate for the number of iterations you specify in the Maximum Iteration Count property. When you set this property to Parity check satisfied , the object will determine if the parity checks are satisfied after each iteration and stops if all parity checks are satisfied.-Specify the condition to stop the decoding iterations as one of Maximum iteration count | Parity check satisfied . The default is Maximum iteration count . When you set this property to Maximum iteration count , the object will iterate for the number of iterations you specify in the Maximum Iteration Count property. When you set this property to Parity check satisfied , the object will determine if the parity checks are satisfied after each iteration and stops if all parity checks are satisfied.
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Size: 3072 |
Author: shankar.m |
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Description: 该代码是实现LDPC编译码的C语言实现，编码采用的IRA LDPC编码算法，而译码采用的是对数域上的BP算法（LLR BP 算法），该代码先是实现了LDPC代码的编码过程，然后在通过LLR BP算法一步一步实现译码过程。译码主要过程有：初始化过程，校验节点更新过程，比特节点更新过程，最后进行译码判决，如果满足译码要求或者达到迭代最大次数则退出，否则返回到校验节点更新继续往下循环执行。(This code is to achieve the LDPC code by the C language, use IRA LDPC encoding algorithm , decode is LLR BP algorithm, first of all, the code is to achieve the encoding process of LDPC code, and then one step by step to achieve the decoding process through the LLR BP algorithm. The main process of decoding: initialization process, check node update process, bit node update process, finally decoding judgment, if meet the requirements or the maximum number of iterative decoding is out, or return to the check node update continued execution cycle.)
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Size: 805888 |
Author: tmh
|
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Description: 根据打孔法，依托对各级变量节点进行分类的方式实现各种变速率LDPC码(According to the hole drilling method, variable rate LDPC codes are implemented by classifying the variable nodes at all levels)
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Size: 33792 |
Author: miniwang
|
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Description: 无论是那种编码方式，在AWGN信道中的性能都明显由于在瑞利衰减信道中的性能。这一点也符合实际。毕竟AWGN信道是瑞利衰减信道的特殊情况。除此之外，在研究单一编码方式误码率时，样本帧数越大，则得到的误码率曲线就越平滑，较少出现较明显的凸起。(Either way, the performance in AWGN channel is obviously due to the performance in Rayleigh attenuation channel. This is also in line with reality. After all, AWGN channel is a special case of Rayleigh attenuation channel. In addition, the larger the number of sample frames, the smoother the BER curve will be, and less prominence will appear when studying the BER of a single encoding mode.)
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Size: 26624 |
Author: lockonlxf |
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Description: LDPC-PEG算法构造H矩阵源码程序，matlab源码程序 clear all;
clc;
%输入编码参数,m:校验节点数目，n:变量节点数目(注意码率R不一定为1/2)
%构造任意码率的LDPC校验矩阵
m=input('The number of check nodes:');
n=input('The number of variable nodes:');
h=zeros(m,n);
%给定变量节点度分布序列 dv=0.38354*x+0.04237*x^2+0.57409*x^3
%为了得到更好的性能，此处的度分布序列采用密度进化理论选取
dv=inline('0.38354*x+0.04237*x.^2+0.57409*x.^3','x');
%计算每个度分布的节点数
indv=quadl(dv,0,1);
a2=round(n*(0.38354/2/indv));
a3=round(n*(0.04273/3/indv));
ds(1:a2)=2;
ds(a2+1:a3+a2)=3;(LDPC-PEG algorithm constructs H matrix source code program, matlab source code program clear all;
CLC;
% Input coding parameters, m: number of check nodes, n: number of variable nodes (note that bit rate R is not necessarily 1/2)
% Constructing LDPC Check Matrix with Arbitrary Bit Rate
M = input ('The number of check nodes:');
N = input ('The number of variable nodes:');
H = zeros (m, n);
% Given variable nodal degree distribution sequence DV = 0.38354*x+0.04237*x^2+0.57409*x^3
% In order to get better performance, the density evolution theory is used to select the degree distribution sequence.
DV = inline ('0.38354 * x + 0.04237 * X. ^ 2 + 0.57409 * X. ^ 3','x');
% Calculate the number of nodes per degree distribution
INDV = quadl (dv, 0, 1);
A2 = round (n* (0.38354/2/indv));
A3 = round (n* (0.04273/3/indv);
DS (1:a2) =2;
DS (a2 + 1: A3 + a2) = 3;)
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Size: 1024 |
Author: MATLAB编程 |
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Description: 首先，认识标准。从系统层面和物理层两方面介绍此标准，给出标准的发送端和接收端系统结构框图，重点描述标准中物理层的特征，总结出标准的重要特点和关键技术。
其次，研宄和实现两种编码器。根据标准中码矩阵的特点，设计一种高效的编码器，完成的实现。在此基础上提出一种新的编码结构一旋转码，对旋转编码器结构进行探究，完成它的仿真和实现。(First of all, recognize the standard. This paper introduces the standard from two aspects of system level and physical layer, gives the system structure diagram of sender and receiver, focuses on the characteristics of physical layer in the standard, and summarizes the important characteristics and key technologies of the standard.
Secondly, two kinds of encoders are studied and implemented. According to the characteristics of the standard code matrix, an efficient encoder is designed and implemented. On this basis, a new encoding structure, rotary code, is proposed. The structure of rotary encoder is explored, and its simulation and implementation are completed.)
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Size: 11463680 |
Author: zzq040 |
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