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Description: 关于低密度奇偶校验码的生成，采用matlab编写，主要是校验矩阵的产生
-on low-density parity-check code generation, prepared using Matlab, mainly for the selection of calibration matrix
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Size: 33792 |
Author: 若冰 |
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Description: 使用C++语言实现LDPC编码的构造与译码过程，并在白高斯信道下对误码率进行仿真-The use of C++ Language realize the structure of LDPC coding and decoding process and in the white Gaussian channel under BER simulation
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Size: 20480 |
Author: yangying |
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Description: mimo系统的仿真，提供发射天分别使用1发1收，和1发多收的各种情况下的误码率比较。IEEE论文的远程序。-MIMO system simulation, respectively, provide the launch-day use of one fat one admission, and one fat collected under a variety of circumstances BER comparison. IEEE papers far procedures.
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Size: 7168 |
Author: 王玉兰 |
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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: 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: 4096 |
Author: Rafal |
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Description: ldpc码在数字水印方面的研究，可加强对ldpc码的理解-the research about ldpc applied digital watermark,it can decrease ber and improve robutness
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Size: 893952 |
Author: 小红 |
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Description: 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. Documentation and update can be found at: http://sites.google.com/site/bsnugroho/ldpc
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Size: 9216 |
Author: Józef |
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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: this an example of LDPC code in which after encoding i have added AWGN(Additive white Gaussian noise) and bsc(binary symmetric channel). then i hav performed decoding operation. one can easily devloped different BER vs Eb/N0 graph of different channel.-this is an example of LDPC code in which after encoding i have added AWGN(Additive white Gaussian noise) and bsc(binary symmetric channel). then i hav performed decoding operation. one can easily devloped different BER vs Eb/N0 graph of different channel.
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Size: 8192 |
Author: Ronak chauhan |
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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.
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Size: 284672 |
Author: 金琦 |
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Description: LDPC的编码译码程序，及其校验矩阵的生成和误码率曲线，还是比较有价值的-LDPC encoding decoding procedures, and the generation of check matrix and the ber curve, or more valuable
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Size: 7168 |
Author: 王岩 |
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Description: 采用C语言，测试LDPC码在AWGN信道下的编译码性能，及BER曲线等-Using C language, the test of LDPC codes under AWGN channel decoding performance, and the BER curve, etc
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Size: 311296 |
Author: 王山 |
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Description: the matlab program checks for cycles that are of the legnth 4.it is a useful program to check if the cycles in your LDPC code are to short thus causing BER errors
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Size: 5120 |
Author: ingatze |
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Description: Matlab software that generates LDPC parity check matrix of rate 1/2 with the possibility of selecting the input output block dimension and performs BER evaluation of BPSK+LDPC transmission over AWGN channel.
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Size: 7168 |
Author: Serpo |
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Description: Abstract—Selection combining cascaded with maximum-ratio
combining (SC/MRC), which is particularly useful when site
diversity is available, combined with low-density parity-check
(LDPC) codes is able to combat the effects of fading. The biterror
rate (BER) expressions of uncoded SC/MRC and SC/MRC
with LDPC codes over an independent and identically distributed
Rayleigh-fading channel are derived based on the Gaussian
approximation approach. These expressions are also applicable
to the selection combining and maximum-ratio combining as
special cases. The derived expressions are in good agreement
with simulation results and approach the density evolution (DE)
thresholds. These expressions are able to achieve a significant
reduction in computational time with a reasonable accuracy for
analyzing the BER performance as compared to simulations and
DE.
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Size: 99328 |
Author: ppdghius |
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Description: 随机构造LDPC码的源代码，内有BER性能仿真分析，已运行无错误。-Randomly constructed LDPC code of the source code, there BER performance simulation analysis has been run without errors.
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Size: 2792448 |
Author: 专心玩 |
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Description: By applying the beam forming technology of BER Genetic algorithms using MATLAB path planning, Can dynamically adjust the parameters of the operating environment.
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Size: 3072 |
Author: gaihenghun
|
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Description: 信息通过LDPC编解码误码率与未编码信息误码率比较(Comparison of BER between uncoded information and LDPC code)
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Size: 13312 |
Author: chenyun |
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Description: 实现的是原模图LDPC码的散点图以及BER参数测量(The scatter plot of LDPC code and the measurement of BER parameters are realized.)
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Size: 106496 |
Author: 大大威武 |
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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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