Description: [LDPC码]是LDPC码相关论文
[WuYuFei]中是WuYuFei的论文
[WuYufei_matlab]是WuYufei做Turbo码的Matlab程序
程序实现在固定信噪比和卷积长度的条件下，计算不同正常的帧错误概率和比特错误概率
turbo_sys_demo.m是主程序
其中trellis.m是构造网格的子程序
logmapo.m是LOGMAP译码算法子程序
sova0.m是SOVA译码算法子程序
encoderm.m是编码子程序
[22]是以WuYufei程序的改动，实现在帧长、信噪比和迭代次数固定的情况下，获得两个译码器的先验信息的变化情况
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-[LDPC Code] LDPC code is a relevant paper [WuYuFei] is WuYuFei paper [WuYufei_matlab] is to do WuYufei procedures Turbo Codes Matlab program signal to noise ratio at a fixed length and convolution conditions, different normal frame error probability and the bit error probability is turbo_sys_demo.m main structure of which is trellis.m grid is logmapo.m Subroutine Subroutine LOGMAP decoding algorithm is the SOVA decoding algorithm sova0.m Subroutine Subroutine encoderm.m coding [22 ] WuYufei procedure is based on changes in帧长realize, signal to noise ratio and a fixed number of iterations circumstances, the acquisition of two decoder a priori information changes http://www.pudn.com Platform: |
Size: 1771520 |
Author:李灵 |
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Description: 该程序用来实现Turbo编解码，而Turbo码是一种信道编码、且是一种纠错码，可以保证信息的传输质量,本程序是用matlab实现的!-The procedure used for Turbo coding and decoding, while the Turbo code is a channel coding, and is an error-correcting codes, can guarantee the quality of information transmission, the process is achieved using matlab! Platform: |
Size: 25600 |
Author:马行空 |
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Description: 该程序用matlab实现的，用来对图形图像进行Space-Time-Trellis-Code编解码，以达到压缩的目的！-The program achieved using matlab to graphic images of the Space-Time-Trellis-Code coding and decoding, in order to achieve the purpose of compression! Platform: |
Size: 8192 |
Author:马行空 |
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Description: LDPC码的并行译码算法：在trellis图上的BCJR算法TDMP_BCJR-Parallel Decoding Algorithm for LDPC codes: In the trellis diagram of the BCJR algorithm TDMP_BCJR Platform: |
Size: 296960 |
Author:郭旭东 |
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Description: Viterbi解码器Matlab版.生成输入、输出表、状态转移表，沿Trellis进行剪枝，记录保留路径，最后返回并得到最终解码。-Matlab version of Viterbi decoder. Generate input, output tables, state transition table, along the Trellis for pruning, record succeed path, finally trace back and get eventually decoding sequence. Platform: |
Size: 3072 |
Author:苏英 |
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Description: turbo 编译码，采用网格编码调制方式，并且成功地在大气激光通信中得到应用。调制部分自己编写，可直接运行，有助于学习turbo-TCM。都是压缩包形式，里面有多个程序和函数。-turbo encoding and decoding, using trellis coded modulation, and successfully applied in atmospheric laser communication. Modulated part of their preparation, can be run directly, will help you to learn turbo-TCM. Platform: |
Size: 80896 |
Author:kingran |
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Description: 本书系统讲解了差错控制编码系统的基础理论和实际应用，主要内容包括：用于可靠数字传输和存储的编码、线性分组码、循环码、二进制BCH码、大数逻辑可译码与有限几何码、线性分组码的网格、卷积码、基于网格的软判决译码算法、Turbo编码、低密度单奇偶校验码、网格编码调制等。本书包含大量实例和习题，讲解深入浅出，分析细致透彻，是差错控制编码领域中的经典教材。-This book explains the system of error control coding system, the basic theory and practical application, the main contents include: digital transmission and storage for reliable coding, linear block codes, cyclic codes, binary BCH codes, decoding logic of large numbers with limited geometric codes, linear block code grid, convolutional codes, grid-based soft-decision decoding algorithm, Turbo coding, low-density single-parity-check codes, trellis coded modulation. This book contains a large number of examples and exercises, analysis. It s the classic textbook in the field of error control coding. Platform: |
Size: 20987904 |
Author:Winnie |
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Description: 1. 程序中Turbo译码采用了MAP,LOG-MAP，和MAX-LOG-MAP三种算法。
2. 以xxx开头的四个mat文件是四种给定的Turbo码在译码时用到的参数，保存下来的目的是
加快仿真的速度，如果你所仿真的Turbo码不是程序中列出的任意一种，你可以通过函数
trellis来生成自己的相关参数。
3. 程序支持1/2和1/3两种码率的Turbo码，其中1/2码率的Turbo码通过矩阵[1 0 0 1]打
孔得到。在译码时通过对打孔位置添0恢复成1/3码率的码字。
4. 程序中的信噪比表示Eb/N0，通过此参数求得N0，对发送信号进行加噪。-1 program in Turbo decoding using the MAP, the LOG-MAP, and three kinds of the MAX-LOG-MAP algorithm. Platform: |
Size: 1408000 |
Author:谢小谢 |
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Description: 有一个基本的格子结构必须提供的Viterbi译码算法。因此，有两个步骤需要在一个特定组合的格子和调制的仿真：第一就是棚架结构。-
Trellis structure，TCM schemes have an underlying trellis structure that must be provided to the Viterbi decoding algorithm. Therefore, there are two steps required in the simulation of a particular combination of trellis and modulation Platform: |
Size: 1024 |
Author:karen |
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Description: 在这项工作中，我们对待这个问题的恢复正确的消息，如果额外的位（假报警）已加入的消息体中，在随机的位置。这的情况是常见的一些是与选择性嵌入水印系统
典型的当人类视觉系统（或录音）注册成立，以提高质量水印系统。我们提出一个有效的解码方案
使用一些修改的“维特比算法的代码。添加额外的状态表示可能的误报率和一个新的扩展算法的改进网格提出图。仿真结果表明，我们的算法在高效率的检测随机的误报率很高。-In this work, we treat the problem of recovering the correct message if
extra bits (false alarms) are added to the body of the message at random locations. This
situation is common for some watermarking systems with selective embedding which is
typical when the human visual (or audio) system is incorporated to enhance the quality of
the watermarking system. We propose an efficient decoding scheme for convolutional
codes using some modifications of‘ the Viterbi algorithm. Extra states are added to
represent the possible false alarms and a new expansion algorithm of the modified trellis
diagram is proposed. The simulation results show the high efficiency of our algorithm in
detecting random false alarms with high rates. Platform: |
Size: 382976 |
Author:白合 |
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Search - Trellis Decoding