代写ENGD3106、代做Python/C++程序设计

日期：2025-03-31 08:35

Faculty of Computing, Engineering & Media (CEM)

Coursework Brief 2023/24

Module name: Mobile Communication 2

Module code: ENGD3106

Title of the Assessment: Mobile Communication Systems

This coursework item is: (delete as appropriate) Summative

This summative coursework will be marked anonymously: Yes

The learning outcomes that are assessed by this coursework are:

1 Students should be able to demonstrate an understanding of the key technological

components of historical, contemporary and future mobile communication systems.

2 Students should be able to demonstrate skills in research and development

according to a variety of briefs

This coursework is: (delete as appropriate) Individual

If other or mixed ... explain here:

This coursework constitutes 50% of the overall module mark.

Date Set: 31/01/25

Date & Time Due (the deadline): 02/04/25 at 12:00 noon

In accordance with the University Assessment and

Feedback Policy, your marked coursework and feedback

will be available to you on:

28/04/25

You should normally receive feedback on your coursework by no later than 15

working days after the formal hand-in date, provided that you have met the

submission deadline.

If for any reason this is not forthcoming by the due date your module leader will let

you know why and when it can be expected. The Associate Professor Student

Experience (CEMstudentexperience@dmu.ac.uk) should be informed of any issues

relating to the return of marked coursework and feedback.

When completed you are required to submit your coursework via:

Turnitin on LearningZone.

If you need any support or advice on completing this coursework please visit the

Student Matters tab on the CEM LearningZone shell.

Late submission of coursework policy:

Late submissions will be processed in accordance with current University

regulations which state:

“the time period during which a student may submit a piece of work late without authorisation

and have the work capped at [40% at PG level] if passed is 14 calendar days. Work

submitted unauthorised more than 14 calendar days after the original submission date will

receive a mark of 0%. These regulations apply to a student’s first attempt at coursework.

Work submitted late without authorisation which constitutes reassessment of a previously

failed piece of coursework will always receive a mark of 0%.”

Academic Offences and Bad Academic Practices:

These include plagiarism, cheating, collusion, copying work and reuse of your own

work, poor referencing or the passing off of somebody else's ideas as your own.

Please ensure you read the section entitled “Academic Offences and Bad Academic

Practice” in the module handbook or the relevant sections in this link: BaseCamp

Link: Overview: Assessment and Good Academic Practices

Tasks to be undertaken: Please, see assignment sheet

Deliverables to be submitted for assessment: Report in Word format

How the work will be marked: See assignment sheet

Module leader/tutor name: Antonella Ragusa

Contact details: antonella.ragusa3@dmu.ac.uk

Should you need any further information or advice please email

cemadvicecentre@dmu.ac.uk

ENGD3106 Mobile Communication 2

Coursework Assignment

2024-2025

Mobile Communication

Systems

Total Mark: 50

Issue date: 31/01/2025

Submission deadline: 02/04/2024

Feedback date: 28/04/2025

Aim: In this assignment, you will use Matlab to simulate multiple-antenna

communication systems, and demonstrate an understanding of modulation techniques

in 4G and 5G systems.

What to submit: Your coursework must be submitted as a report in Word format to

Turnitin. All Matlab scripts used must be included in an appendix at the end of the

report. This includes all additional functions you have written as part of your code (if

any). Your Matlab code must be well-commented and documented. All references

must be in IEEE format. Please note that 5 marks will be allocated to the presentation

and organisation of your report including the documentation of your Matlab code.

Task 1

1) A single-input single-output (SISO) system operates at 2.6 GHz with a line-of sight (LoS) channel between the transmitter (Tx) and the receiver (Rx).

Write a Matlab script that simulates transmission of a randomly generated

bitstream of 106 bits over an Additive white Gaussian noise (AWGN) channel

using the three modulation techniques used in LTE-A (4G), i.e., QPSK, 16-QAM

and 64-QAM. Plot and compare the bit error rate (BER) of these modulation

techniques as a function of the energy per bit to noise power spectral density ratio

(Eb/N0) for an AWGN channel. Discuss and analyse your results.

[10 marks]

2) Consider a multi-input multiple output (MIMO) system with a n-element ULA Tx

array and a n-element ULA Rx array all with half-wavelength spacing.

Considering QPSK modulation only, demonstrate the array gain in multiple antenna systems by comparing the BER of the SISO system in 1) with that of

MIMO systems for n = 4, 8 and 16 under AWGN channels.

Discuss and analyse your results.

[12 marks]

3) Based on your findings in 2), estimate the array gain that will be achieved if 64x64

MIMO is deployed. Explain your answer.

[3 marks]

Task 2

The International Telecommunication Union defines the propagation model for an

urban macro-cell scenario within street canyons between a base station and a mobile

user as:

𝐿(𝑑, 𝑓𝑐) = 10𝛼 log10(𝑑) + 𝛽 + 10𝛾 log10(𝑓𝑐

) dB

where L is the magnitude of the link attenuation in dB

d is the distance between the transmitter and receiver in m

fc is the operating frequency in GHz

𝛼 is a coefficient associated with the increase of the basic transmission loss

with distance

𝛽 is a coefficient associated with the offset value of the basic transmission

loss

𝛾 is a coefficient associated with the increase of the basic transmission loss

with frequency

The values of the basic transmission loss coefficients for below-rooftop propagation

are reported in Table I, for the line-of-sight (LoS) scenario and the non-line-of-sight

(NLoS) scenario.

Table 1 Basic transmission loss coefficients for below-rooftop propagation

Frequency range (GHz) Distance range (m) α β 

0.8-82 5-660 LoS 3.01 29.2 5.06

0.8-82 30-715 NLoS 4.00 10.2 7.60

1) Write a Matlab function that can calculate the cell radius based on a given link

budget using the parameters in Table 2, that shows the link budget for the uplink

on a mobile communication system operating on 2.100 GHz, as inputs.

Then, write a Matlab script that uses your function to calculate the cell radius

using the values in Table 2.

Table 2: Link budget for an uplink

Link Budget (Uplink) Value

Transmitter, terminal

Maximum mobile transmission power [W] 0.125

Antenna gain 1.5 dBi

Body loss -3 dB

Receiver, Base Station

Required Eb/N0 at base station decoder 5 dB

Fast fading margin -5 dB

Log-normal fading margin -7.3 dB

Antenna gain 17 dBi

Cable loss -2 dB

User noise interference margin 3 dB

Processing gain (W /R) 25 dB

Thermal noise -100 dBm

[8 marks]

2) Compare the cell coverage range of line-of-sight (LoS) scenario with the non line-of-sight (NLoS) one. Explain your findings.

[6 marks]

3) LTE-A (4G) systems use the three modulation techniques QPSK, 16QAM and

64QAM.

a. Research the literature, and cite the related references, to discuss the impact of

using different modulation techniques on the cell coverage range when all other

system setup parameters are the same including the required Eb/N0.

[3 marks]

b. Demonstrate that impact using the Matlab code in Task 2.1) using NLoS

scenario.

[3 marks]