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模拟数字基带系统在matlab下的实现,包括输入输出信号的码型,功率谱密度,眼图及误码率-Analog-to-digital base-band system in the realization of matlab, including the code input and output signal type, the power spectral density, eye diagram and bit error rate
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his procedure is the power spectral density of the simulation, 3 signal source on the specific circumstances, see the "modern digital signal processing" Introduction to the first volume, P202, Exercise 5. Experimental Methods
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自相关函数Rxx(tao)可以了解不同时刻同一随机样本间的波形相似程度。
自功率谱密度函数Sxx(f):反映相关函数在时域内表达随机信号自身与其他信号在不同时刻的内在联系。当随机信号均值为零时,自相关函数和自功率谱密度函数互为傅立叶变换对。
-Autocorrelation function Rxx (tao) can learn the same random sample at different times the degree of similarity between th
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用VB语言实现随机信号的功率谱密度算法和自相关函数。-VB language with random signal power spectral density and autocorrelation function algorithm.
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数字基带信号功率谱密度的计算,适合《通信原理》初学者-Digital baseband signal power spectral density calculated for Communication Theory beginners
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求信号功率谱密度的简单程序,并将结构保存成TXT文档-Demand signal power spectral density of simple procedures, and to save the structure into a TXT document
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OQPSK信号的半正弦整形,调制解调,以及各步骤的信号功率谱密度。-Half-sine shaped OQPSK signal, modulation and demodulation, and the steps of the power spectral density of the signal.
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本文档解释功率谱与功率谱密度的区别,懂的这些区别有助于信号处理的编程-This document explains the power spectrum and power spectral density difference, understand these differences contribute to the signal processing program
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BPSK信号功率谱密度的MATLAB编程代码,运行得到波形。-BPSK signal power spectral density of the MATLAB programming code that runs waveform.
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对于已定义的包含从0到15的整数的列向量xsym,就可以利用modem.qammod对象的modulate方法来调制它。其中M值为16,亦即为码字表的大小。
对已调制信号可采用awgn函数添加加性高斯噪声。其中比特能量与噪声功率谱密度的比值,Eb/N0,设置为10dB。
-The method comprising modulate integer from column vectors xsym 0 through 15, can use the defined object mod
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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
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用于求取一段时间信号序列的求取自相关函数、功率谱密度-Obtaining autocorrelation function for obtaining a period of a signal sequence, power spectral density
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用函数输出不同占空比信号的波形和功率谱密度,一段简单的matlab程序-Function output duty cycle signal with different waveforms and power spectral density, a simple piece of matlab program
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二进制频移键控信号时域波形,频域功率谱密度,以及加入加性高斯白噪声后输出的信噪比与误码率的关系。-Binary FSK signal time-domain waveform, frequency domain power spectral density, and the relationship between AWGN to a dispersion after the output signal to noise ratio and bit error rate.
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二进制相移键控信号时域波形,频域功率谱密度,以及加入加性高斯白噪声后输出的信噪比与误码率的关系。-Binary Phase Shift Keying signal time-domain waveform, frequency domain power spectral density, and the relationship between AWGN to a dispersion after the output signal to noise ratio and bit error ra
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四进制频移键控信号的时域波形产生以及频域的功率谱密度产生-Quaternary FSK signal in the time domain waveform generation and power spectral density in the frequency domain to produced.
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求任意带宽的低通、高通、带通高斯白噪声的自相关函数,自协方差函数和功率谱密度函数。-Seeking any bandwidth low pass, high pass, band pass Gaussian white noise autocorrelation function, autocovariance function and power spectral density function.
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预失真补偿后的图形,采用快速傅里叶变换(Fast Fourier Transform, FFT)
计算得信号的频率数据,再利用得到的频率数据计算功放预失真补偿前后功率谱密度
样值-Predistortion compensation of graphics, using the Fast Fourier Transform, Fast Fourier Transform and FFT)
Calculate signal frequency data, then get the fr
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MATLAB程序估计信号的功率谱,功率谱密度,能量谱,能量谱密度-MATLAB program estimating the power spectrum of the signal, power spectral density, energy spectrum, the energy spectral density
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Matlab产生正弦波、均匀白噪声、高斯白噪声,并将两种噪声叠加到正弦波上。并给出自相关和功率谱密度波形(Matlab produces sine wave, uniform white noise, Gauss white noise, and superimposes two kinds of noise on the sine wave. And give self correlation and power spectral density waveforms)
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