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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
LDPC码性能的影响进行了仿真,得到了一些结论。最后,利用VHDL语言在复杂可编
程逻辑器件(CPLD)上完成了LDPC码编码器的硬件实现。另外,给出了LDPC码译
码器硬件实现的整体结构图,结合对数似然比域内的置信传播迭代译码(LLR-BP)算
法,对译码器的各个模块进行了详细阐述。(Research and implementation of LDPC coding and decoding technology)
- 2018-04-08 18:48:44下载
- 积分:1
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Advanced-Signal-Processing-Lab
Advanced signal processing
- 2011-05-02 17:36:53下载
- 积分:1
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corctp
用于求解不可压ns方程的压力矫正计算方程,采用了二维对称调用的技术。(Ns for solving incompressible pressure correction equation calculation equation, using a technique called two-dimensional symmetry.)
- 2011-10-14 08:52:05下载
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Alamouti-Code-2X1-16-Qam
Alamouti Code 2X1 16-Qam
- 2015-01-06 16:26:13下载
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FLD_based-Face-Recognition-System_v2
FLD_based Face Recognition System_v22帮助大家学习LDA算法,解决线性可分的问题(FLD_based Face Recognition System_v2)
- 2013-11-18 21:25:52下载
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fuzzycontrol
模糊控制一级线性倒立摆系统MAtlab、simulink仿真(A linear inverted pendulum fuzzy control system MAtlab, simulink simulation)
- 2013-12-24 21:55:12下载
- 积分:1
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nangbie
从先验概率中采样,计算权重,抑制载波型差分相位调制,基于掌纹识别的在线身份验证 识别算法本科毕设。( Sampling a priori probability, calculate the weight, Suppressed carrier type differential phase modulation, Verify recognition algorithm based on palmprint recognition undergraduate complete set of online identity.)
- 2016-06-21 11:45:13下载
- 积分:1
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GA
说明: 求解一元二次方程的遗传算法代码
在Matlab下可以运行(Solving a quadratic equation of the genetic algorithm code)
- 2010-05-25 18:42:54下载
- 积分:1
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adc3
take a input vector which is no of users of b[kx1] and
code vector which will be a matrix now s=[Nxk],where
then give to matched filter,non-correlating detector,
by randomised sequence.
- 2009-11-15 03:43:32下载
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orl_fisher
模式识别的经典算法之一,fisher脸特征提取,采用matlab进行编程(One of the classic pattern recognition algorithms, fisher Face feature extraction using matlab programming)
- 2009-03-18 22:42:54下载
- 积分:1