we provide information about gadget news and price information and specs samsung, huawei, Tecno Price products, Specifications, Features and more information about software from blackberry and android

Friday, December 27, 2013

ESTIMATION OF PERIODOGRAM

ESTIMATION OF PERIODOGRAM - Did you know that every day there is always a new technology that is created? if you want to know please refer to the blog Gadget News well now we will discuss first about ESTIMATION OF PERIODOGRAM as you need now, we have compiled this article carefully, so please see to finish.

Articles : ESTIMATION OF PERIODOGRAM
full Link : ESTIMATION OF PERIODOGRAM

You can also see our article on:


ESTIMATION OF PERIODOGRAM

ESTIMATION OF PERIODOGRAM
AIM
To estimate the power spectral density of a given signal using periodogram
in MATLAB.
THEORY
The power spectral density (PSD) of a WSS process is the Fourier transform of the autocorrelation sequence. Periodogram is a non-parametric method to estimate PSD
() = (k)
For an autocorrelation ergodic process and an unlimited amount of data, the autocorrelation sequence may be detemined by using the time average
(k) = (n+k)x*(n)
If x(n) is only measured over a finite interval, say n=1,2,…N-1, then the autocorrelation sequence must be estimated using with a finite sum
(r) = () (n+k)x*(n)
In order to ensure that the value of x(n) that is fully outside the interval [0,N-1] are excluded and written as follows
(k) = () (n+k)x*(n) k=0,1,2….,N-1.
Taking the discrete Fourier transform of rx^(k) leads to an estimation of the power spectrum known as the periodogram.
() = (k)
The periodogram
() = ()() = ()
Where XN(ejw) is the discrete time Fourirer transform of the N-point data sequence XN(n)
() = (n) =
ALGORITHM
STEP 1: Compute the value of x.
STEP 2: Perform periodogram function for x signal.
STEP 3: Using pwelch function, smoothen the output of periodogram signal.

STEP 4: Plot the graph for input and output signal


PROGRAM
##########################################################
clc;
clear all;
close all;
fs=1000;
t=0.1:1/fs:0.3;
x=cos(2*pi*t*200)+0.1*randn(size(t));
figure(1);
plot(x);
title('input signal');
xlabel('time');
ylabel('amplitude');
figure(2);
periodogram(x,[],'one sided',512,fs);
figure(3);
pwelch(x,30,10,[],fs,'one sided');
#############################################################

RESULT
 Thus the MATLAB program to estimate the power spectral density of given signal using periodogram is executed and output is plotted.




article ESTIMATION OF PERIODOGRAM has been completed in the discussion

hopefully the information ESTIMATION OF PERIODOGRAM that we provide can be useful for you to know the development of technology in the present

articles ESTIMATION OF PERIODOGRAM we have conveyed to you, if feel this information is useful and you want to bookmark or share so that more people who know please use link https://profsmythe.blogspot.com/2013/12/estimation-of-periodogram.html.

Tag :
Share on Facebook
Share on Twitter
Share on Google+
Tags :

Related : ESTIMATION OF PERIODOGRAM

2 comments:

  1. http://www.domzbasenem.com.plxn.wo.lt/redirect.php?url=https://www.celebritynews.wiki/
    http://nuodeme.wo.lt/redirect.php?url=https://www.celebritynews.wiki/
    http://pazink.wo.lt/redirect.php?url=https://www.celebritynews.wiki/
    http://tuzas.wo.lt/redirect.php?url=https://www.celebritynews.wiki/
    http://www.firmydom.plxn.wo.lt/redirect.php?url=https://www.celebritynews.wiki/
    http://tumas.wo.lt/redirect.php?url=https://www.celebritynews.wiki/
    http://hhappydiwali2015.com.plxn.wo.lt/redirect.php?url=https://www.celebritynews.wiki/
    http://seo-services.biz.plxn.wo.lt/redirect.php?url=https://www.celebritynews.wiki/
    http://www.nadzorowac.bizxn.wo.lt/redirect.php?url=https://www.celebritynews.wiki/

    ReplyDelete