EE1003
INTRODUCTION TO SIGNALS AND
COMMUNICATIONS: PROJECT
Part 1 : Project overview
WHAT IS THIS PROJECT ABOUT?
Build a laser wireless communication system.
Apply signals and communications conceptions you
have learned in the lectures and lab sessions to
EE1003
INTRODUCTION TO SIGNALS AND
COMMUNICATIONS: PROJECT
Part 3: Hardware
MAIN CONTENT
The overall view of communications.
Binary logic.
Basic gates and IC.
D flip-flop and sequential logic.
Counter and shift registers.
Digital phase lock loop 74HC
Chapter 1:
Signals and Communications
Sem 2, AY 1516,
Zhang Jian Wen, [email protected]
Electrical and Computer Engineering
1
Content
Communications and examples
Signal definition and basic functions in EE
Signal operations
2
Communications (telecommu
Chapter 2:
Fourier Transform
Sem 2, AY 1516,
Zhang Jian Wen, [email protected]
Electrical and Computer Engineering
1
Content
Signal examples in frequency domain
Fourier Series for periodic signals
Different forms of FS
FS examples
Lab 1
Fourier Tra
What you can expect to learn from this module:
1.
Describe the spectrum of common periodical signals such as sinusoids, square and triangular waveforms.
2. Operate and use certain key functions on the digital oscilloscope, signal generator and DC power su
7
Giving Presentations
53
Giving Presentations
One of the things you will often be asked to do
at the university is to give a presentation in class.
Many people are terrified of public speaking
and would do anything to get out of it.
Nevertheless, as good
EE1003 Introductions to signals and communications
Lab 2
Lab Sheet for Experiment 2
Objective: To generate amplitude modulation (AM)
signals from signal generators, observe
their amplitude spectrum and interpret your observations.
Warm-up problem:
1. If (
Materials for EE1003
Solutions for assignment
Q1:
Compare the sinusoids with the standard form
cyclic frequency, 2
a. Frequency:
A c o s( 2 f )
where A is the amplitude,
is the angular frequency and is the initial phase.
f
f 50 H z
or 1 0 0 rad/s
(
2 f
EE1003 Introductions to signals and communications
Supplementary materials for Lab 1
Measure the amplitude spectrum of a signal using an oscilloscope with
FFT function
Zhang Jianwen
We all know that a signal can be represented in time domain by a time fun
EE1003 Introductions to signals and communications
Lab 1
Lab Sheet for Experiment 1
Objective:
1. To use the oscilloscope to observe the amplitude spectra of common periodical signals.
2. To interpret your observations on the signal amplitude spectra.
War
5
Proofreading an Essay or Report
35
Proofreading an Essay or Report
In Chapter 1, the importance of
proofreading in the final stages of
writing was mentioned.
Despite its importance, there is no one
clear definition of proofreading.
Some people treat pro
What you can expect to learn from this module:
1.
Describe the spectrum of common periodical signals such as sinusoids, square and triangular waveforms.
2. Operate and use certain key functions on the digital oscilloscope, signal generator and DC power su
Chapter 3
Bit & Frame Synchronization
1 Bit Synchronization
Let Tb be the bit duration of a binary PCM waveform. Given
a signaling rate of nf0 bits per second, it follows that Tb =
1/(nf0).
Suppose that the PCM transmitter employs on-off keying
(OOK) for
Chapter 2
Sampling & Pulse Code Modulation
1 Sampling
Suppose we wish to sample an analog signal v (t) at a sampling rate f0 given by 1/T0. That is, we wish to take a
snapshot of v (t) every T0 seconds.
This may be achieved by multiplying v (t) with the
Appendix to Chap. 1: Derivation of (5) from (4)
The following derivation of (5) from (4) will appeal to the
mathematically inclined. Note that it is nevertheless not essential and has been included purely for completeness.
From Eulers formula, we have
1
Chapter 1
Fourier Series & Fourier Transforms
Mathematical Preliminaries Complex Numbers
Consider the complex number c n = x + jy where x and y
are real and j = 1.
Pictorially, cn can be represented as a vector in the complex
plane. This vector has leng
SEQUENTIAL CIRCUITS
SEQUENTIAL
CIRCUITS
Copyright Ashraf Kassim. All rights reserved.
DIGITAL design
page 1
SEQUENTIAL CIRCUITS
Sequential Circuits: An Overview
In sequential circuits, outputs depend on both present & past
inputs. We consider sequential
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3
Using Appropriate Words in
an Academic Essay
19
Using Appropriate Words in an Academic Essay
As you develop your essay,
you need to think carefully about
your choice of words. This is very important
in academic essays. For example, you would not
use con
Chapter 2:
Fourier Transform
Sem 2, AY 1516,
Zhang Jian Wen, [email protected]
Electrical and Computer Engineering
1
Content
Signal examples in frequency domain
Fourier Series for periodic signals
Different forms of FS
FS examples
Lab 1
Fourier Tra
Chapter 2:
Fourier Transform is amazing!
Sem 1, AY 1516,
Zhang Jian Wen, [email protected]
Electrical and Computer Engineering
1
Content
The secrets of signals
Harmonics, music, spectrum analysis, harmonic analysis
Project any signal to a set of basis