ELEC ENG 2007 - Signals & Systems
North Terrace Campus - Semester 2 - 2014
General Course Information
Course Code ELEC ENG 2007 Course Signals & Systems Coordinating Unit School of Electrical & Electronic Engineering Term Semester 2 Level Undergraduate Location/s North Terrace Campus Units 3 Contact Up to 4 hours per week Assumed Knowledge ELEC ENG 1010 Restrictions Available to BE(E&E-Avionics), BE(Computer Sys), BE(El &El), BE(Telecom) BE (Sustainable El)& associated double degree students only. Course Description Continuous signals and systems: block diagrams, linearity, causality, stability and time-invariance, linear time-invariant (LTI) systems, impulse response; Convolution sum & integral; Convolution & correlation; introduction to Stochastic Signals.
Fourier techniques in signals and systems: Fourier series and transform of signals; Frequency response of continuous time LTI circuits and systems; Fourier transforms and continuous spectra; Applications, correlation and power spectrum.
Communication Signals and Systems Introduction: signal and carrier; Bandwidth and spectrum allocation; Modulation schemes: AM, FM and PM; Transmitters and receivers : filters, down- and up-conversion, mixers; Modulators and demodulators.
Analogue Filters: filters and filtering; Analog filter design; Low pass prototypes (Butterworth, Chebyshev, All Pass, Elliptic); Filter design and transformations - (low, high, band); Realisation of passive filter circuits; Scattering parameters, lumped LC circuits, admittance parameters; Active filters 1st and 2nd order transfer functions.
Course Coordinator: Professor Doug GrayCourse Coordinator and Lecturer: Professor Doug Gray
Office: Engineering Maths 412
Phone: 8313 6425
The full timetable of all activities for this course can be accessed from Course Planner.
Course Learning OutcomesAfter completion of this course, students will be able to:
1. Recognise, sketch and manipulate basic signals commonly used in engineering applications;
2. Define, use and cite some simple properties of these basic signals;
3. Classify signals according to a variety of criteria including energy, power and duration;
4. Use common signal transformation operations and draw them in block diagram form;
5. Competently manipulate complex-valued signals;
6. Formulate the input-output description of continuous time (CT) linear systems;
7. Define, state and identify system properties of linearity, time (in)variance, causality, memory and stability;
8. Formulate and solve differential equations describing linear, time invariant (LTI) systems, including both transient and steady-state responses;
9. Perform CT convolution to find the steady-state response of LTI systems;
10. Analyse and synthesise systems as a composite of sub-systems through series, parallel and feedback combinations;
11. Derive and interpret the spectra of signals and frequency responses of CT LTI systems;
12. Use Fourier transform methods to obtain CT LTI systems’ outputs in the steady state;
13. Define Laplace transforms and manipulate s-domain transfer functions describing CT LTI systems; 14. Compute poles and zeros of CT LTI systems and use them to determine performance characteristics, such as stability and frequency response;
15. Model general systems using second order CT LTI approximations and quantify system behaviour such as damping and resonance;
16. Describe random processes using probability density functions and other statistical methods;
17. Compute and differentiate between ensemble and time averages for random processes;
18. Relate the spectrum of a random process to its autocorrelation function;
19. Describe the concept and techniques for performing signal modulation in communication systems; 20. Analyse the performance of Amplitude Modulation (AM), Phase Modulation (PM) and Frequency Modulation (FM) systems;
21. Describe and analyse some of the building blocks of modern communication systems: filters, amplifiers, up- and down-converters/mixers, modulators and demodulators;
22. Analyse and design analogue low-pass filter prototypes: Butterworth, elliptic, Chebychev and all- pass;
23. Apply the technique of filter transformations to obtain high- and band-pass filters, and their realisation with passive components;
24. Discuss the principles of active filters and design first and second order active filters;
25. Implement simple signal and systems analysis techniques in MATLAB;
26. Demonstrate the principles of mixing and frequency shifting using electronic circuits in laboratory conditions.
University Graduate Attributes
This course will provide students with an opportunity to develop the Graduate Attribute(s) specified below:
University Graduate Attribute Course Learning Outcome(s) Knowledge and understanding of the content and techniques of a chosen discipline at advanced levels that are internationally recognised. All The ability to locate, analyse, evaluate and synthesise information from a wide variety of sources in a planned and timely manner. 25,26 An ability to apply effective, creative and innovative solutions, both independently and cooperatively, to current and future problems. 6, 8-10, 12-15, 19,21,25,26 Skills of a high order in interpersonal understanding, teamwork and communication. 26 A proficiency in the appropriate use of contemporary technologies. 25,26 A commitment to continuous learning and the capacity to maintain intellectual curiosity throughout life. 15,16,19
Required ResourcesNo required textbooks or specific resources.
A set of course notes, practice problems and other supporting materials will also be available for downloading from the course web site.
Recommended ResourcesThe following textbooks are recommended:1. Lathi, B. P. Linear Systems and Signals, 2nd Edition, Oxford University Press, 2005, ISBN-10: 0195158334,ISBN-13: 978-0195158335.2. Oppenheim, Alan V., Willsky, Alan S. with Nawab, S. Hamid Signals & Systems, 2nd Edition, Prentice-Hall 1997, ISBN-10: 0138147574,ISBN-13: 978-0138147570.3. Proakis, John G. and Salehi, Masoud Communication Systems Engineering, 2nd Edition, Prentice Hall, 2001, ISBN-10: 0130617938, ISBN-13: 978-0130617934.4. Seda, Adel S. and Smith, Kenneth C. Microelectronic Circuits, 5th edition, Oxford University Press, 2007, ISBN-10: 0195338839,ISBN-13: 978-0195338836.
Online LearningExtensive use will be made of the MyUni web site for this course, https://myuni.adelaide.edu.au/webapps/login.
Course notes, tutorial problems and solutions, laboratory exercises and practice problems will all be available for downloading from the web site. Where the lecture theatre facilities permit, audio or video recordings of lectures will also be available for downloading.
Learning & Teaching Activities
Learning & Teaching ModesThis course relies on face to face sessions as the primary delivery mechanism for the material with video lectures and quizzes being used to supplement the face to face lectures. Exercises provide practice in problem solving and enhance the understanding of the course topics. The 4-week practical is used to provide hands-on experience for students to reinforce the theoretical concepts encountered in this course. Marked homeworks and tests provide formative and summative assessment opportunities, respectively, for students to measure their progress throughout the semester.
The information below is provided as a guide to assist students in engaging appropriately with the course requirements.
Activity Contact Hours Workload Hours Video lectures and on-line quizzes 13 Modules 0 20 Lectures 34 lectures 34 68 Practical 4 sessions 12 20 Homework 4 exercises 0 10 Tests 2 tests 2 10 Exam 1 final exam 2 30 TOTAL 50 158
Learning Activities Summary
Activity Sessions Title Lectures 1-4 Continuous-time (CT) signals 5 Introduction to Matlab 6-11 CT Linear time-invariant (LTI) systems 12-20 Fourier domain analysis of CT signals and systems 14-18 Laplace domain analysis of CT signals and systems 19-21 Random processes and signals 22-25 Communication systems principles and modulation 26-30 Ct filter design 31-34 Summary and revision Practical 1 Signals and spectra
Specific Course RequirementsStudents are required to have access to Matlab software. This is available at various facilities such as the CATS suite or the undergraduate computer labs of the School of Electrical & Electronic Engineering. It is the individual student’s responsibility to ensure his or her access to these facilities at appropriate times is available.
The University's policy on Assessment for Coursework Programs is based on the following four principles:
- Assessment must encourage and reinforce learning.
- Assessment must enable robust and fair judgements about student performance.
- Assessment practices must be fair and equitable to students and give them the opportunity to demonstrate what they have learned.
- Assessment must maintain academic standards.
Assessment activity Type Weighting Due date Learning objective addressed Homeworks Formative 16% Weeks 4, 6, 8,11 1-18 Quizzes Summative 14% Weeks 5, 10 1-15 Practical Formative 10% Weeks 4-8 4, 13-15, 19 Exam Summative 60% End of semester 1-18
Assessment Related RequirementsThe examination is a hurdle requirement. It is necessary to achieve at least 40% in the exam. If this is not achieved, the total course mark will be limited to a maximum of 49.
A hurdle requirement is defined by the University's Assessment for Coursework Programs policy as "...an assessment task mandating a minimum level of performance as a condition of passing the course.
If a student fails to meet a hurdle requirement (normally no less than 40%),and is assigned a total mark for the course in the range of 45-49, then the student is entitled to an offer of additional assessment of some type. The type of assessment is to be decided by the School Assessment Review Committee when determining final results. The student’s final total mark will be entered at no more than 49% and the offer of an additional assessment will be specified eg. US01. Once the additional assessment has been completed, this mark will be included in the calculation of the total mark for the course and the better of the two results will apply. Note however that the maximum final result for a course in which a student has sat an additional assessment will be a “50 Pass”.
If a student is unable to meet a hurdle requirement related to an assessment piece (may be throughout semester or at semester’s end) due to medical or compassionate circumstances beyond their control, then the student is entitled to an offer of replacement assessment of some type. An interim result of RP will be entered for the student, and the student will be notified of the offer of a replacement assessment. Once the replacement assessment has been completed, the result of that assessment will be included in the calculation of the total mark for the course.
Assessment DetailThe homeworks require students to submit written responses to selected sets of problems. The submissions may contain any of the following: written answers, mathematical derivations, sketches, graphs and print-outs from appropriate software packages. There will be four separate problem sets, each worth 4% to the overall assessment.
There are two 45-minute closed book quizzes in the course. The quizzes will require students to submit short written responses to a set of questions under examination conditions. Each quiz will be worth 7% to the overall assessment.
The practical needs to be conducted during the designated laboratory sessions as listed in Section 1.3 Course Timetable. Students will be required to show regular progress in the laboratory sessions, and to submit a practical report describing the practical work for assessment. The combined total of in-lab progress marks and the practical report are worth 10% of the final assessment.
The exam will be a closed book examination. It will be worth 60% of the overall assessment.
SubmissionAll written submissions to formative assessment activities are to be submitted electronically, or to designated boxes within the School of Electrical & Electronic Engineering, by 3.00pm on the due date and must be accompanied by a signed cover sheet. Copies of blank cover sheets are available from the School office in Ingkarni Wardli 3.26, or online in electronic form. Late submissions are not accepted unless explicit prior approval is granted by the course coordinator or Head of School. All in-term assessments will have a two week turn-around time for provision of feedback to students.
Full details can be found at the School policies website:
Grades for your performance in this course will be awarded in accordance with the following scheme:
M10 (Coursework Mark Scheme) Grade Mark Description FNS Fail No Submission F 1-49 Fail P 50-64 Pass C 65-74 Credit D 75-84 Distinction HD 85-100 High Distinction CN Continuing NFE No Formal Examination RP Result Pending
Further details of the grades/results can be obtained from Examinations.
Grade Descriptors are available which provide a general guide to the standard of work that is expected at each grade level. More information at Assessment for Coursework Programs.
Final results for this course will be made available through Access Adelaide.
The University places a high priority on approaches to learning and teaching that enhance the student experience. Feedback is sought from students in a variety of ways including on-going engagement with staff, the use of online discussion boards and the use of Student Experience of Learning and Teaching (SELT) surveys as well as GOS surveys and Program reviews.
SELTs are an important source of information to inform individual teaching practice, decisions about teaching duties, and course and program curriculum design. They enable the University to assess how effectively its learning environments and teaching practices facilitate student engagement and learning outcomes. Under the current SELT Policy (http://www.adelaide.edu.au/policies/101/) course SELTs are mandated and must be conducted at the conclusion of each term/semester/trimester for every course offering. Feedback on issues raised through course SELT surveys is made available to enrolled students through various resources (e.g. MyUni). In addition aggregated course SELT data is available.
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Policies & Guidelines
This section contains links to relevant assessment-related policies and guidelines - all university policies.
- Academic Credit Arrangement Policy
- Academic Honesty Policy
- Academic Progress by Coursework Students Policy
- Assessment for Coursework Programs
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- Coursework Academic Programs Policy
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- Intellectual Property Policy
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- Modified Arrangements for Coursework Assessment
- Student Experience of Learning and Teaching Policy
- Student Grievance Resolution Process
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