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ldpc-a-brief-tutorial
LDPC Codes – a brief Tutorial
Bernhard M.J. Leiner, Stud.ID.: 53418L bleiner@gmail.com
April 8, 2005
- 2011-06-02 15:26:08下载
- 积分:1
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Solving
说明: 求解双层规划问题常用的算法有极点算法、直接搜索法、下降法和非数值优化方法(如模拟退火算法、遗传算法等),遗传算法的求解思路是:首先对上层的决策变量编码,代人下层规划模型,通过求解下层模型的决策变量值,代入上层模型计算适应度值,然后进行交叉、变异、选择操作,最后求出最优解。(Solving Bilevel Programming Problems with pole algorithm commonly used algorithms, direct search method, descent and non-numerical optimization methods (such as simulated annealing, genetic algorithms, etc.), genetic algorithm for solving approaches: the first on the top of the decision variable coding, on behalf of the were lower programming model, by solving the lower model of decision variables values into the upper model on behalf of the fitness value, and then crossover and mutation, select Options, and finally get the best solution.)
- 2010-04-07 13:21:06下载
- 积分:1
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4
说明: :载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2
种算法,即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本
思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小,精度不高,而基于训练序列
的算法有较高的估计精度,但降纸了系统传输效率。(Abstract:Carrier frequency ofset is one of the key problems in OFDM system.Two foundational methods
。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency
ofset are analyzed.Then it discusses their basic thoughts。implementing methods and simulation resuits.
Finally。merits and demerits of every algorithm are supposed.It concludes that the cycling prefix—
based algorithm has less complexity and less precision。and that the training sequence—based algorithm
has better estimation performance at the cost of transmission efficiency.)
- 2010-05-18 18:34:44下载
- 积分:1
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time_frequency
这是一篇现代通信原理课程的作业报告.题目为几种时频分析方法比较及应用.详细介绍了短时傅里叶变换、小波变换、魏格纳—威利分布和Cohen类时频分布这4种典型时频分析方法,并作了比较(This is a modern communication Principle operating report. Entitled Comparison of several time-frequency analysis and 应用. 详细 Jieshao the short time Fourier transform, wavelet transform, Wigner- Willie distribution and frequency distribution of Cohen Lei This four kinds of typical time-frequency analysis method, and compared)
- 2010-07-12 22:12:25下载
- 积分:1
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103--protocol
103规约,比较全 规约草案 103规约完IEC60870-5-103规约基本要点全版 ProtocolTester.exe 许继103通信规约TCP(many about IEC 103 protocol )
- 2012-03-15 20:17:20下载
- 积分:1
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RTCA-DO-229D
RTCM协议说明文档,介绍RTCM协议详细内容,帧结构。(rtcm frame )
- 2016-11-14 15:45:52下载
- 积分:1
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antenna-array-self-tuning-algorithm
通讯类:天线阵列自校正算法研究,天线阵列自校正算法研究,天线阵列自校正算法研究,天线阵列自校正算法研究(Communications: antenna array self-tuning algorithm, antenna array self-tuning algorithm, antenna array self-tuning algorithm, antenna array self-tuning algorithm)
- 2013-03-20 13:05:58下载
- 积分:1
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802.16标准
说明: 802.16E的协议文档,完整版本。其中包括3个版本。(802.16E protocol document, full version.)
- 2020-06-19 02:40:01下载
- 积分:1
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HCF-Spec183-(Common-Tables-Specification)
HART Communication Foundation - Common Tables Specification
- 2020-11-20 14:49:36下载
- 积分:1
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adaptive-signal-process
自适应信号处理(何振亚)(科学出版社出版)(有关自适应信号处理的书籍)(Adaptive signal processing (Zhenya) (Science Press) (for adaptive signal processing books))
- 2011-08-17 15:01:09下载
- 积分:1