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SpcTurbostack-spread-ST
Turbo码性能仿真源程序信道编码方面的(Turbo code performance simulation source channel coding of)
- 2007-07-05 20:41:44下载
- 积分:1
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wienerfilter
基于matlab的维纳滤波器基于matlab的维纳滤波器基于matlab的维纳滤波器基于matlab的维纳滤波器基于matlab的维纳滤波器(based on matlab winear filter)
- 2010-01-16 21:46:27下载
- 积分:1
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adsl_a2d_d2a
This module provides an introduction for our ELEC 301 DMT group project.
这是其中a2d模块部分(This module provides an introduction for o ur ELEC 301 DMT group project. This module is part of a2d)
- 2021-02-13 10:19:49下载
- 积分:1
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Integer-Programming
该文件为整数规划过程涉及的matlab程序段,包含割平面法及枚举法(This file is an integer planning process involves matlab program segments, including cutting plane method and the enumeration method)
- 2013-07-25 10:52:50下载
- 积分:1
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m_send_receive
64长度的m序列的捕获过程,同时有数据部分经过调制解调和m序列的成帧过程等描述(64 m length sequence capture process, while there is some data through the modem and m describe the sequence of framing processes)
- 2010-07-13 17:04:16下载
- 积分:1
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new2
matlab implmentation of g.723.1
- 2012-04-17 14:26:53下载
- 积分:1
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ding
选取windows系统自带的ding.wav信号作为分析对象,在Matlab软件平台下,利用函数wavread对音频信号进行采样,记住采样频率和采样点数,听一下原始声音sound(y, fs, bits)。
(2)音频信号的频谱分析,先画出音频信号的时域波形;然后对音频号进行快速傅里叶变换fft(y,N),N取32768,画出信号的频谱特性,加深对频谱特性的理解。
(3)根据频谱,反演时域特性,画出时域波形。寻找幅值最大的两个频率,此频率除以fft点数在乘以采样频率就是信号的主频,即可合成信号的时域图形,听一下声音。
(4)对原音频信号进行1024点的分段付立业分析meshgrid
(5)根据主要频线合成音频,并画出时域图形,试听合成效果。
(6)采用线性插值(linspace)和傅立业反变换(fliplr, ifft)分别合成音频,并画出时域图形,试听效果。
(err)
- 2009-01-13 16:23:47下载
- 积分:1
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LCMV
阵列信号处理方面的LCMV优化设计阵列处理信号的算法(Array signal processing to optimize the design of LCMV signal array processing algorithms)
- 2008-06-14 10:52:10下载
- 积分:1
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fangzhen
实验一 双极性矩形随机信号的归一化功率谱密度一
1.1 功率谱密度简介
平稳过程的任何一个非零样本函数的持续时间为无限长,显然都不满足绝对可积和总能量有限的条件。因此,它的傅里叶变换不存在即没有频谱函数。所以我们用功率谱密度来表述其频谱特性。
随机过程的任一实现是一个确定的功率型信号。而对于任意的确定功率信号f(t),它的功率谱密度为:
式中, 是f(t)的截短函数 对应的频谱函数。f(t)是平稳随机过程 的一个实现。而随机过程某一个实现的功率谱密度不能作为过程的功率谱密度。过程的功率谱密度应该看作是任一实现的功率谱密度的统计平均,即
虽然该式给出了平稳随机过程的功率谱密度,但我们通常都不利用这个式子来计算功率谱。我们知道,确知的非周期功率信号的自相关函数与功率谱密度是一对傅里叶变换。对于平稳随机过程,也有类似的关系,即
和
对于平稳随机过程我们通常先求出其自相关函数再利用上式求出其功率谱密度。
1.2 实验要求
1.了解平稳随机信号功率谱的概念及计算方法
2.仿真不同占空比,等概、非等概双极性矩形随机信号的归一化功率谱密度
3.分析不同信号所包含的频谱分量,有无直流分量和定时分量信息
(A pair of rectangular random experiment polarity signal sample return a nonzero function of any duration power spectral density of a 1.1 power spectral density of a stationary process Introduction of infinite length, apparently not satisfied absolutely integrable and the total energy of the limited conditions. Therefore, it is the Fourier transform of the spectrum that does not function does not exist. Therefore, we use the power spectral density to express their spectral characteristics. Any random process is a realization of a certain type signal power. For arbitrarily determined power signal f (t), its power spectral density is: wherein, is f (t) is a function corresponding to the truncated spectrum function. f (t) is a stationary random process of realization. The random process to achieve a certain power spectral density can not serve as the power spectral density of the process. Power spectral density process should be seen as a statistical average power spectral density of any r)
- 2014-11-30 20:39:29下载
- 积分:1
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radarcode
使用MATLAB生成线性调频信号,并进行傅里叶变换,并进行脉冲压缩(Chirp signal is generated using MATLAB and Fourier transform, and pulse compression)
- 2014-11-21 09:01:30下载
- 积分:1