Description: AWGN的仿真程序。FILENAME: awgn_simulator.c
version 1.5
(C) Tadashi Wadayama, 2003
An LDPC code simulator based on quantized-BP algorithm for AWGN chanel
-AWGN simulation program. FILENAME : awgn_simulator.c version 1.5 (C) Tadashi Wada Yama. 2003 An LDPC code simulator based on quantized - BP algorithm for AWGN chanel Platform: |
Size: 15371 |
Author:沈进旗 |
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Description: AWGN的仿真程序。FILENAME: awgn_simulator.c
version 1.5
(C) Tadashi Wadayama, 2003
An LDPC code simulator based on quantized-BP algorithm for AWGN chanel
-AWGN simulation program. FILENAME : awgn_simulator.c version 1.5 (C) Tadashi Wada Yama. 2003 An LDPC code simulator based on quantized- BP algorithm for AWGN chanel Platform: |
Size: 51200 |
Author:沈进旗 |
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Description: 采用Log-BP算法的LDPC码译码仿真程序，给出了不同信噪比下误码率和误包率的统计图，用matlab和C（c-mex）程序分别编写，有详细说明和注释。-The use of Log-BP decoding algorithm for LDPC code simulation program is given a different signal to noise ratio and bit error rate under the packet error rate of the statistical map, using matlab and C (c-mex) procedures, respectively, to prepare, has a detailed description and notes . Platform: |
Size: 77824 |
Author:智钢 |
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Description: 基于C语言仿真 LDPC编解码仿真程序，希望对各位有用-Based on the C language simulation LDPC codec simulation program, in the hope that useful Platform: |
Size: 931840 |
Author:hxf |
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Description: 用C写的LDPC码在瑞利信道下的性能仿真程序，请需要用的同志参考指正！-Using C to write the LDPC codes in Rayleigh fading performance simulation program, please refer to the comrades need to correct me! Platform: |
Size: 8192 |
Author:木木 |
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Description: 关于Q元LDPC码的C++仿真程序，绝对正确，应经调试过了……请参考-Q yuan LDPC code on the C++ Simulation program, is absolutely correct, shall be subject to adjustment after a ... ... please refer to Platform: |
Size: 109568 |
Author:木木 |
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Description: 此程序是c语言的有关LDPC译码仿真程序，很有用，LDPC的译码仿真可能对朋友有帮助-This procedure is related to c language LDPC decoding simulation program, very useful, LDPC decoding simulation may have to help a friend Platform: |
Size: 7168 |
Author:shirley |
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Description: 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.
This program presents an approach [1] for constructing the short length of LDPC codes with girth 8. First, we design 3 submatrices with different shifting functions given by our schemes, then combine them into a matrix according to our approach, finally, expand the matrix into a desired parity-check matrix using identity matrices and cyclic shift matrices of the identity matrices.
The simulation results in AWGN channels show that the codes which can be obtained by the generator matrix derived from this check matrix for encoding the random information bits are as good as random LDPC codes [1].
Ref:
[1] J. Fan, Y. Xiao, “A design of LDPC codes with large girth based on the sub-matrix shifting”, IET International Conference on Wireless Mobile and Multimedia Networks Proceedings (ICWMMN 2006), (CP525), p. Platform: |
Size: 2048 |
Author:lydia |
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Description: c语言编写的LDPC译码仿真程序,有利于加深对LDPC码的理解。-c languages of the LDPC decoder simulation program, is conducive to deepening the understanding of the LDPC codes. Platform: |
Size: 2048 |
Author:郑全 |
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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. Platform: |
Size: 15360 |
Author:吴健 |
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Description: Low Density Parity Check (LDPC) 信道编码的C程序。二部图连接关系的输入在20000.10000.3.631.txt 文件中。文件中的参数包括check，ariable节点的度数，具体的连接关系。可根据具体需要，需改你所需的txt文件，从而实现任意参数的LDPC程序仿真。经验证，此程序的性能正确，符合理论文献中的结果。-Low Density Parity Check (LDPC) codes simulation C program. This program is developed by Seishi Takamura in Stanford University. This program can realized the simulation of ber performance of regular LDPC codes. The code structure is defined by the*.txt file including the check node degree, variable node degree and the connection indices between the nodes in the bipartite graph. If you want to simulate LDPC codes with other parameters, you can only modify this input .txt file. I have tested this program and the logic is correct and performance is also accurate in the Bit error rate. In addition, the syntax of this program is so easy to learn. Generally speaking, it is a very good example for the rookie people working in the channel coding area. Platform: |
Size: 284672 |
Author:金琦 |
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Description: 用c++实现LDPC码的仿真过程，包括基矩阵的生成，信道生成，编码，传输，解码，校验整个过程的一系列程序-simulation program of ldpc code include enconder and decoder Platform: |
Size: 707584 |
Author:lee |
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Description: 基于C++实现的LDPC码仿真代码程序，awgn信道下的编解码。(The LDPC code simulation code program based on C++, and the codec in the AWGN channel.) Platform: |
Size: 3611648 |
Author:dznsd |
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