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ECE-523 – ADVANCED COMMUNICATION SYSTEMS

ECE-523 – ADVANCED COMMUNICATION SYSTEMS. LECTURE I. WHAT THIS LECTURE ADRESSES. Prerequisites ECE -324 – Communication Systems I ECE 421 – Communication Systems II ECE523 Course Outline ECE523 Teaching Sequence Laboratory/Practical Sessions. ECE- 342-COMMUNICATION SYSTEMS I.

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ECE-523 – ADVANCED COMMUNICATION SYSTEMS

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  1. ECE-523 – ADVANCED COMMUNICATION SYSTEMS LECTURE I

  2. WHAT THIS LECTURE ADRESSES • Prerequisites • ECE -324 – Communication Systems I • ECE 421 – Communication Systems II • ECE523 Course Outline • ECE523 Teaching Sequence • Laboratory/Practical Sessions

  3. ECE- 342-COMMUNICATION SYSTEMS I • 1. History of electronic communication. Introduction to telecommunications: definition and importance of communications. • 2. Elements of communication systems: basic block diagram; sources, transmitter, channels, receiver. Destination and noise. • 3. Types of electronic communications: simplex; amplitude modulation (AM) and Frequency modulation (FM) broadcasting, cable TV, paging, telemetry, surveillance. Duplex: telephones, data communication,

  4. ECE- 342-COMMUNICATION SYSTEMS I (CONT..) • 4. LANS and WANS, internet, Fax mail and radar. Electromagnetic spectrum from audio frequencies to cosmic rays; radio frequency (RF), visible spectrum and micro wave ranges, bandwidth and frequency management. • 5. Analogue carrier modulation and demodulation Schemes: Amplitude modulation (AM), Frequency modulation (FM) and phase modulation and demodulation schemes. Pulse modulation (PAM) sampling theorems; pulse width modulation (PWM) pulse position modulation (PPM) and their reception principles. • AM and FM transmitters and receivers: modulator and demodulator circuits, pre – emphasis and de- emphasis. • 6. Classification of noises and types in communication systems. Noise performance in various modulation schemes, noise figures and signal – to – noise ratios.

  5. ECE 421-COMMUNICATION SYSTEMS II • 1. Signal digitization: pulse amplitude modulation (PAM), sampling theorems and sampling circuits. Pulse code modulation (PCM). • 2. Quantization methods: Uniform and companding methods; vocoders; signal – to – quantization noise ratio. Delta modulation (DM) and adaptive delta modulation (ADM) principles and analysis. Coding methods. Information entropy and information capacity, bits, bit rate and the baud. Pulse transmission, intersymbol interference and the eye pattern. • 3. Digital Modulation: M-ary encoding. Amplitude shift keying (ASK), frequency shift keying (FSK) phase shift keying (PSK) quadrature amplitude modulation (QAM) and differential phase shift keying (DPSK). Signal recovery in ASK, FSK, & PSK. Probability of error and bit error rate. Spread spectrum. Design aspects of radio links. Measurements performed on digital radio systems.

  6. ECE 421-COMMUNICATION SYSTEMS II(CONT..) • 4. Error performance: Error detection and correction. • 5. Multiplexing: Frequency division multiplex (FDM), time division multiplexing (TDM), plesiosynchronous digital hierarchy (PDH), synchronous digital hierarchy (SDH), synchronous optical network (SONET). • 6. High - Speed Systems: Local data transmission; 56k Modems (v.90) line signals; high – speed digital subscriber line (HDSL); asymmetric digital subscriber line (ADSL); very – high – speed digital subscriber line (VDSL) and the integrated services digital network (ISDN)

  7. ECE-523-ADVANCED COMMUNICATION • 1. Voice Communication Characteristics of Human Speech, Zero Transmission Level Point, The Telephone Network, Modulation and Multiplexing, Dedicated and Dial-up Circuits, Two-Wire and Four-Wire Transmissions, Battery Systems, Telephone Instruments, Switching • 2. Telephone System Performance: Reference Equivalent, Network Stability, Echo, Via Net Loss, Distortion, Intermodulation Noise, Line Conditioning Compandors,

  8. ECE-523-ADVANCED COMMUNICATION (CONT..) • 3. Transmission: Frequency Division Multiplexing Systems, Time Division Multiplexing Systems, Pulse Code Modulation Systems • 4. Mobile Networks Communication: Cellular Networks, GSM Architecture, GSM Operation

  9. TEACHING SEQUENCE (1) • 30th January -21st Feb 2012 (4 Weeks) Voice Communication • Characteristics of Human Speech • Zero Transmission Level Point • The Telephone Network • Modulation and Multiplexing • Dedicated and Dial-up Circuits • Two-Wire and Four-Wire Transmissions • Telecommunication Power Systems • Telephone Instruments • Switching Systems • CAT I - Approx: 22nd February 2012

  10. TEACHING SEQUENCE (2) 27th February – 19th March 2012 (3 Weeks) Telephone System Performance • Reference Equivalent • Network Stability • Echo • Via Net Loss • Distortion • Intermodulation Noise • Line Conditioning Compandors 27th March – 10th April 2012 (3 Weeks) Transmission • Frequency Division Multiplexing Systems • Time Division Multiplexing Systems • Pulse Code Modulation Systems CAT II: Approx. 10th April 2012

  11. TEACHING SEQUENCE (3) 10th April – 2nd May 2012 (3 Weeks) Mobile Networks Communication (3 weeks) • Mobile Networks Communication • Cellular Networks • GSM Architecture • GSM Operation • 3rd and 4th Generation Systems • CAT III: 3rd May 2012

  12. LABORATORY SESSIONS PCM/EV MODULES • 1. PULSE and DTMF Electronic Telephone Systems • 2. Switching and PCM Transmission Systems MATLAB SESSIONS • Digital Transmission Through Band Limited Channels • Digital Transmission via Carrier Modulation

  13. REFERENCE BOOKS • Bruce Carlson, “Communication Systems,” McGraw Hill • John C. Bellamy, "Digital Telephony," Wiley International, 2000 (Price Ksh. 1080- UNES) • Satish K. Karna, “Communication Systems” CBS Publishing and Distributors, 2008 • Thiagarajan Viswanathan, “Telecommunication Switching Systems and Networks, PHI Learning, 2011 (Price 1,150 Text Book Centre) • N.N. DEB “Telecommunication Engineering,” New Age International Publishers, Reprint 2008 • Yi-Bang Lin and Imrich Chlamtac, "Wireless and Mobile Network Architectures," Wiley Student Edition, 2001 (Price: 935-UNES)

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