2020/21 Undergraduate Module Catalogue
ELEC3430 Digital Communications
10 creditsClass Size: 100
Module manager: Professor Mohsen Razavi
Taught: Semester 2 (Jan to Jun) View Timetable
Year running 2020/21
This module is not approved as a discovery module
Module summaryThe teaching and assessment methods shown below will be kept under review during 2020-21. In particular, if conditions allow for alternative formats of delivery, we may amend the timetable and schedule appropriate classes in addition to (or in place of) the Online Learning Workshops. For Semester 2 (from January 2021), we anticipate that this will be most likely, in which case online teaching will be substituted for traditional face-to-face teaching methods, including lectures and practical classes. ‘Independent online learning’ will involve watching pre-recorded lecture material or screen-casts, engaging in learning activities such as online worked examples or remote/virtual laboratory work, etc. Students will be expected to fully engage with all of these activities. The time commitment for independent online learning, and also the frequency and duration of Online Learning Workshops, are approximate and intended as a guide only. Further details will be confirmed when the module commences.
ObjectivesThis module introduces the key principles of advanced digital communications systems, including pulse shaping, channel characteristics and multiple-access techniques in cellular mobile and optical communications systems.
On completion of this module students should be able to:
1. Show a good understanding of the engineering principles behind the physical layer in modern communications networks.
2. Demonstrate extensive knowledge and understanding of the principles of digital modulation schemes such as BPSK, QPSK and QAM.
3. Use analytical techniques to predict the performance of communications systems.
4. Understand the nature of communication channels and the methods used to combat signal impairments.
5. Reproduce all aspects of both the design procedure, and subsequent analysis, for a representative communications system case study.
6. Use mathematical or other simulation tools to model the performance of a typical communications subsystem.
Topics may include, but are not limited to:
Modern Digital Communication Systems
Review of signals; Vector representation of signals; energy vs power signals
Generic binary communication links
Optimal receivers for binary communications systems, e.g., matched-filter and correlation receivers
Performance analysis of binary communication systems
Carrier modulation techniques, e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), and quadrature amplitude modulation (QAM)
Pulse shaping; inter-symbol interference
Introduction to radio propagation, channel characteristics and countermeasures; fading channels
Optical fibres, their characteristics (e.g. attenuation, single-mode versus multimode)
Receiver characteristics: quantum limit on receiver sensitivity
Sources and detectors. Optical amplification and regeneration
Coherent and incoherent optical communications
BER analysis of an optical OOK link
Wavelength division multiplexing and future directions in optical networking
Due to COVID-19, teaching and assessment activities are being kept under review - see module enrolment pages for information
|Delivery type||Number||Length hours||Student hours|
|Independent online learning hours||32.00|
|Private study hours||60.00|
|Total Contact hours||8.00|
|Total hours (100hr per 10 credits)||100.00|
Private studyStudents are expected to use private study time to consolidate the material covered in lectures, to undertake preparatory work for the problem sheets and to prepare for summative assessments.
Opportunities for Formative FeedbackStudent progress will be monitored via the problem sheet assignments.
Methods of assessment
|Assessment type||Notes||% of formal assessment|
|Online Assessment||Online Assignment/Test 1||25.00|
|Online Assessment||Online Assignment/Test 2||25.00|
|Online Assessment||Online Assignment/Test 3||25.00|
|Online Assessment||Online Assignment/Test 4||25.00|
|Total percentage (Assessment Coursework)||100.00|
Resits for ELEC and XJEL modules are subject to the School's Resit Policy and the Code of Practice on Assessment (CoPA), which are available on Minerva. Students should be aware that, for some modules, a resit may only be conducted on an internal basis (with tuition) in the next academic session. .
Reading listThere is no reading list for this module
Last updated: 10/08/2020 08:35:35
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