Overview

Spectral Density and Noise: energy and power spectral densities; transmission of noise through LTI systems; equivalent noise bandwidth; available power and noise temperature; noise figure; antenna and sky noise temperatures.Amplitude Modulation: modulation and demodulation techniques and systems for double sideband suppressed carrier, double sideband large carrier, single sideband, and vestigial … For more content click the Read More button below.

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Tuition pattern

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Aims

This topic aims to introduce students to the concept, treatment and analysis of noise in communication systems, the basic concepts of information theory and its application to coding and communication, linear and exponential continuous-wave modulation and demodulation techniques, the methods and issues in transmitting analogue messages along digital communication systems, the range of techniques for modulating and demodulating digital information for transmission through a communication system, and the comparison of different communication systems in terms of issues such as noise, bandwidth and information rate.

Learning outcomes

On completion of this topic you will be expected to be able to:
1.
Analyse the time-average effect of noise in communication systems
2.
Understand and apply the modulation and demodulation techniques for continuous-wave communication systems
3.
Apply information theory to the coding of information and the calculation of the capacity of a channel
4.
Understand and apply the modulation and demodulation techniques for digital baseband and bandpass communication systems
5.
Critically evaluate and compare different modulators and demodulators

Assessments

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Requisites information

Anti-requisites:

Assumed knowledge

Ability to understand and apply electronic circuits incorporating operational amplifiers, diodes, transistors, such as can be obtained in ENGR8703 Electronics GE. Experience in an electronics laboratory using oscilloscopes and function generators, such as can be obtained in ENGR8703 Electronics GE. Ability to understand and apply concepts from linear time-invariant systems, such as can be obtained in ENGR8722 Analysis of Engineering Systems GE.