UFMFS7 15 3 CW Assignment 2015 2016

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Communications (UFMFS7-15-3) Coursework Assignment 2015 - 2016

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MODULAR PROGRAMME

ASSESSMENT SPECIFICATION

Module Details

Module Code

UFMFS7-15-3

Run Module Title

Communications

Module LeaderSabir Ghauri

Module TutorsSabir Ghauri, Brain Carse

Component and Element Number

CW1

Weighting: (% of the Module's assessment)

50%

Element Description

Coursework Assignment(Numerical/Lab/Research)

Total Assignment time

25 hours

Dates

Date Issued to Students

10th

November 2015

Date to be Returned to Students

Submission Place

A Block(Help Desk open 9.00 - 6.00pm)

Submission Date21

stJanuary 2016

Submission Time

2.00 pm

Deliverables

Attached sheet details deliverables.

Module Leader Signature
http://fold.cems.uwe.ac.uk:8080/exist/servlet/db/fold1/prod/asstime.xqlhttp://fold.cems.uwe.ac.uk:8080/exist/servlet/db/fold1/prod/asstime.xql


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COURSEWORK ASSIGNMENTCommunications (UFMFS7-15-3)

Purpose of the assignment

This assignment is intended to provide an opportunity for students to:-

(i) apply theoretical knowledge to design and understand the important

elements of telecommunication systems.(ii) carry out research-based exercise exploring the state-of-the-art in

modern communication systems to implement a design of a simple

communication system.(iii) become familiar with simulation techniques and in particular with the

use of the simulation package MATLAB.

(iv) produce a precise, concise and clear written solutions/report for

marking purposes.

Introduction

The coursework is divided into two parts. You are required to attempt one

section from Part 1 and the whole of the Part 2 (please see more details

regarding this part under Part 2 heading).

The coursework assignment will be carried out in groups (4 students in agroup). Part 2 is compulsory for all groups and you must declare your group

members names and which section are you attempting from Part 1. (Selection

of sections from Part 1 will be on first come first serve bases any section

selected by one group will not be allowed to any other group). For any

discussion on the topic or further information you may write to Dr. Sabir

Ghaurion his e-mail address:[email protected] Dr Brian Carseon

his e-mail [email protected]

The hand-in date of the CW assignment is on 21stJanuary 2016.

Resources

The NS2 Network Simulator

Documentation that includes all aspects (including good examples) of the

software is available athttp://www.isi.edu/nsnam/ns/

Matlab Communications Tool Box and Communication & RF Block set

available on PCs in Laboratory 2N40 with CEMS password
mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]://www.isi.edu/nsnam/ns/http://www.isi.edu/nsnam/ns/http://www.isi.edu/nsnam/ns/http://www.isi.edu/nsnam/ns/mailto:[email protected]:[email protected]


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PART 1: (Attempt only one section from this part)

Section A


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Section B


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Section C


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Section D


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QUESTION 3

A carrier of 1V is amplitude modulated by the signal, tV

tVv 2cos2

cos .

(a)Determine the maximum modulation factor that can be employed withoutover modulation occurring. [7 Marks]

(b)Use the modulation factor calculated in (a) to tabulate and plot themodulation envelope. [8 Marks]

(c)Write the frequency spectrum equation of a sinusoid modulated as DSBAM

wave and then represent it by phasor diagram for intervals of T/8, where T

is the periodic time of the modulating signal. [10 Marks]


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Section E


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Section F


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Section G


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Section H


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Section I


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Section J


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PART 2: (this part is compulsory for all students)

Design and Implementation of a Wireless

Acoustic Communication System

Introduction

This coursework project aims to design and implement an end-to-end digital

communication system over a poor quality communication channel.

The end goal is to achieve wireless acoustic communication system, in which a

speaker and a microphone are employed as the transmitting and receiving

antennas respectively. You will use Matlabs built-in capabilities that let you

emit a sound from the computer speaker, and record a sound incident upon themicrophone (e.g. see functions soundsc, sound, wavread, auread, . . .).

Many sources of noise and distortion will be present in this system, among

them, non-ideal and/or nonlinear speaker and microphone frequency responses,multipath propagation between the speaker and the microphone, propagation

delay, and ambient noise.

Your goal should be to overcome these challenges and design and implement asystem that achieves high bit rate throughput and reliable transmission.

You have full control over what to choose for the transmit filter, modulator,receive filter, and equalizer, and you are encouraged to try a number of

different combinations of these. It is also expected that you will make smart

choices about the type(s) of modulation to choose, and compare their

performances as well. This will involve a significant amount of background

research.

As part of the project, you may wish to start by modelling the acoustic

communication system and channel in MATLAB before implementing the

final physical system. In this case, you should carefully state your choice ofnon-ideal channel characteristics used.

Important points:

Do not forget practical necessities such as carrier and symbol

synchronization, and automatic gain control. For instance, it will be helpful

if you use a training (known) sequence or tone, to help in symbol timing

and also with equalization (see the figure below, which does not show

carrier synchronization or AGC blocks). You will need to research these

issues.

You are required not to use data compression or error correction/detectioncoding.


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Deliverables and Marking Scheme

You are required to submit a report of up to 12 pages for each group.

The report should include:

1. Your overall design (typically a schematic diagram). [20 Marks]

2. A description of the overall purpose of each component in the design and

why it is required. [30 Marks]

3. A detailed description of the design choices and calculations for each

component and for the system as a whole. [30 Marks]

4. You will also be required to give a brief demonstration of your system in

the final lab session of the semester. [20 Marks]

For any further clarification please write Dr Brian Carse on his e-mail address:

[email protected]

Additional Notes

Your research will draw on a number of sources of information. You are

welcome to include diagrams from other sources PROVIDED THESE ARE

SUITABLY REFERENCED. The written text MUST BE YOUR OWN

WORK. Unreferenced diagrams and inclusion of text from other sources (otherthan brief referenced quotations) will be treated as intentional plagiarism.

You are to use the Harvard referencing system, details of which can be foundon the UWE website. This is a worldwide standard referencing style.
mailto:[email protected]:[email protected]:[email protected]


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UFMFS7 15 3 CW Assignment 2015 2016

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