Code covered by the BSD License  

Highlights from
Contemporary Communications Systems Matlab Files

image thumbnail

Contemporary Communications Systems Matlab Files

by

Omar Ruiz (view profile)

 

Matlab Files in this book

ip_06_04.m
% MATLAB script for Illustrative Problem 6.4.
clear
echo on
Length=101;
Fs=10000;
W=2000;
Ts=1/Fs;
n=-(Length-1)/2:(Length-1)/2;
t=Ts*n;
h=2*W*sinc(2*W*t);        
% The rectangular windowed version follows.
N=61;
rec_windowed_h=h((Length-N)/2+1:(Length+N)/2);
% Frequency response of rec_windowed_h follows.
[rec_windowed_H,W1]=freqz(rec_windowed_h,1);
% to normalize the magnitude
rec_windowed_H_in_dB=20*log10(abs(rec_windowed_H)/abs(rec_windowed_H(1)));
% The Hanning windowed version follows.
hanning_window=hanning(N);
hanning_windowed_h=h((Length-N)/2+1:(Length+N)/2).*hanning_window.';
[hanning_windowed_H,W2]=freqz(hanning_windowed_h,1);
hanning_windowed_H_in_dB=20*log10(abs(hanning_windowed_H)/abs(hanning_windowed_H(1)));
% Plotting commands follow.

Contact us