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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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259
说明: it is a tamplete to build website
- 2019-06-10 02:58:05下载
- 积分:1
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895643
These papers are very good review in renewable energy especially in solar energy, a must have for researchers!
- 2015-05-17 15:29:37下载
- 积分:1
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936991729Handwriting-recognition
matlab 应用图像处理知识,实现对数字的识别,识别率高(Matlab applies the knowledge of image processing to realize the recognition of the numbers and the high recognition rate)
- 2018-03-15 19:28:05下载
- 积分:1
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C++程序设计(谭浩强)
C++程序设计(谭浩强)
C++程序设计(谭浩强)(C++ program
C++ program)
- 2017-07-25 10:48:18下载
- 积分:1
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execl
execl的使用,和execvp的用法不同,可以相互比较着使用(the use of execl)
- 2014-06-05 23:25:46下载
- 积分:1
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基于EMD的包络谱进行故障诊断matlab程序实例
说明: 对原始信号进行EMD分解及包络解调,得出包络解调谱,分析出故障频率(The original signal is decomposed by EMD and demodulated by envelope. The spectrum of envelope demodulation is obtained and the fault frequency is analyzed.)
- 2019-04-23 18:20:36下载
- 积分:1
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guess
说明: 一个能知道你所想的程序,结果会令你出乎意料的惊奇,其实如果你用理智的态度去想想,你就会知道为什么,这个程序是在WINDOWS XP下用C++写的(A program that can know what you are thinking,and the result will suprise you very much,but if you think logically,you shall know why,this program is developed in WINDOWS XP using C++.)
- 2010-04-19 22:49:26下载
- 积分:1
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similarity
count the distance of word net
- 2013-09-21 06:20:55下载
- 积分:1
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C#生成二维码、调用摄像头扫描二维码实例源码
C#生成二维码、调用摄像头扫描二维码,可直接拿来测试
- 2013-01-10下载
- 积分:1