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5824991

于 2019-03-28 发布文件大小:3KB

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系统分别对无线通信中的几种重要的多址接入协议进行了仿真,包括pure-ALOHA,slotted-ALOHA,CSMA以及(Several important multiple access protocols in wireless communication are simulated by the system, including pure-ALOHA, slotched-ALOHA, CSMA, and the like.)

文件列表：

3main.m, 5106 , 2008-02-28
npcsma.m, 2487 , 2008-02-28
paloha.m, 2162 , 2008-01-23
saloha.m, 2245 , 2008-01-22
snpisma.m, 3320 , 2008-01-22

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2013-08-13 13:41:25下载

积分：1
chuanghanshu
这是整理的，在ASK通信中所需要的各种窗函数的部分源代码(This is the finishing, in the ASK communication needed in various parts of the source code window function)

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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．)

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基于QR分解的宽度优先球形译码width_first_K-Best
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2020-07-06 15:18:58下载

积分：1

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