%Experiment 3
%Writing a function that generates unit impulse signal
%Input to be given are t1=start time in second , t2=end time in second,
0=delay in second,fs=sampling frequency
function [x,t]=unit_impulse(t1,t2,fs,d)
t=t1:1/fs:t2;
n=abs(d)*fs;
%No. of
%Experiment 6a
%This find frequency content of a rectangular pulse through FFT
fs=10;
ampling frequency fs, in each cycle fs/f samples
t = 0:1/fs:30;
ampling time 0 to 30 second at interval of 1/fs
v = [zeros(1,145) ones(1,10) zeros(1,146)]; % pulse width
%Experiment 1
%Generation of square wave
f=50; D=50;
0undamental frequency f, duty cycle in percentage D
fs=1000;
ampling frequency fs, in each cycle fs/f samples
t = 0:1/fs:0.1;
ampling time 0 to 0.1 second at interval of 1/fs
v = square(2*pi*f*t,D); %ge
Communication Lab.
Pulse
Experiment No. 5
Modulation
Object:
To study the methods of generating PAM signals and how to calculate the sampling
frequency (fS ) .
Theory:
The pulse modulation is based on the use of a pulsiform carrier signal which is
modulat
Communication Lab.
Delta
Experiment No. (5)
Modulation (DM)
:Object
To study the methods of generating Delta Modulation signals and how to calculate the
signal to noise ratio(S/N).
Theory:Pulse code modulation has made it possible to transmit analog signa
Communication Lab.
Pulse Code
Experiment No. (4)
Modulation (PCM)
:Object
To study the methods of generating PCM signals.
Theory:The generation of PCM is a three step process as illustrated in Fig.(4-1). The message
signal is first sampled. The sample val
Communication Lab.
Pulse Code
Experiment No. (4)
Modulation (PCM)
:Object
To study the methods of generating PCM signals and how to calculate the signal to
quantization noise ratio ( S Q ).
Theory:The generation of PCM is a three step process as illustrat
Communication Lab.
Amplitude
Experiment No. 3
Modulation (AM)
Object:
To study the methods of generating AM signals and how to calculate the
modulation index (m).
Theory:
The term Amplitude Modulation can be understood initially as the classic AM
techniqu
Communication Lab.
The
Experiment No. 1
Adder
Object:
To study the effect of the summing 0n the amplitude, frequency and shape of the
signals.
Theory:
Adders are modules used throughout communications technology to unite several
signals in a collective si
Communication Lab.
Digital modulation
Digital modulation is carried by using a sinusoidal carrier modulated (shift Keying) by
using the information (message) which is digital. The Fig. below shows the ASK, FSK and
PSK .
VC
Vinf
.
VASK
VFSK
VPSK
In the ASK
Communication Lab.
Phase Shift Keying
Experiment No. (3)
Modulation (PSK)
:Object
.To study the methods of generating PSK signals
Theory:In this method, the phase can only adopt two discrete values. The method is therefore
known as two phase shift keying
Karabuk University
Electrical-Electronics Engineering
Signals and Systems
1.7 Fourier Analysis
The subject of Fourier analysis is concerned with representing a signal as weighted
superposition of complex sinusoids. The complex sinusoids are basic signals
Karabuk University Electrical-Electronics Engineering Signals and Systems
Homework 1
1- For the following signal, determine whether it is even, odd, or neither.
2- Find the energies of the following signals. Comment on the effect on energy of sign change,
Karabuk University Electrical-Electronics Engineering Signals and Systems
Homework 1
1- For the following signal, determine whether it is even, odd, or neither.
2- Find the energies of the following signals. Comment on the effect on energy of sign change,
Karabuk University Electrical-Electronics Engineering Signals and Systems
Solutions of Homework 1
1. By definition a signal is even if and only if x(t) = x(-t) or x[n] = x[-n], while a signal is odd if and
only if x(t) = -x(- t) or x[n] = -x[-n].
Since x(
Karabuk University Electrical-Electronics Engineering Signals and Systems
Homework 2A
1- Indicate whether the following systems are causal, invertible, linear, memoryless, and/or time
invariant by circling the correct options. (A system may have more than
NET351: Signal and System Analysis
Assignment 2 Solution
Definitions: A system y=Tcfw_x is:
Memoryless: IF the output y at any time depends on only the input at that
same time. Otherwise (previous or future values) it is memory system or has a
buffer.
Cau
Karabuk University
Electrical-Electronics Engineering
Signals and Systems
COURSE CODE: EEE 363
COURSE NAME: Signals and Systems
Outlines
Introduction to Signals and Systems
Classification of Signals: Continuous-Time and Discrete-Time Signals,
Analog an
COMMUNICATION SYSTEM EECB353
Chapter 4
NOISE ANALYSIS
Noise Analysis
Noise is any undesired signal that ultimately appears in the
output of a communications system.
Electrical noise is defined as any undesirable electrical energy
that falls within the pas
Image Processing using Matlab
Images in Matlab
Matlab is optimised for operating on
matrices
Images are matrices!
Many useful built-in functions in the
Matlab Image Processing Toolbox
Very easy to write your own image
processing functions
2
Loading an
Medical Imaging Signals and Systems
Jerry L. Prince and Jonathan M. Links
Upper Saddle River, NJ: Pearson Prentice Hall, 2006
Errata, Version 1.03, March 12, 2007
This errata applies to both the first and second printings of the book. The printing number
Karabuk University
Electrical-Electronics Engineering
Signals and Systems
1. For the following signal, determine whether it is even, odd, or neither.
2. Find the energies of the following signals. Comment on the effect on energy of sign change, time
shif
Information Theory and Coding
2nd Grade/Computer Security
Lecture Two- Source Coding
Introduction
The two main problems of representation are the following:
imm
The problem of representing the source alphabet symbols Si in term of another system of
symbol
Chapter Two
2.1- Channel:
In telecommunications and computer networking, a communication channel
or channel, refers either to a physical transmission medium such as a wire, or to
a logical connection over a multiplexed medium such as a radio channel. A ch
Chapter Three
Source Coding
1- Sampling theorem:
Sampling of the signals is the fundamental operation in digital communication. A
continuous time signal is first converted to discrete time signal by sampling process.
Also it should be possible to recover
Source Encoding:
A code is a mapping of source messages (words from the source alphabet alpha)
into codewords (words of the code alphabet beta). The source messages are the basic units
into which the string to be represented is partitioned. These basic un