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Principles of Communication Systems

by Sunil S Harakannanavar
Type: NoteSpecialization: Electronics and Communication EngineeringOffline Downloads: 1517Views: 30746Uploaded: 9 months agoAdd to Favourite

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Modern Digital and Analog Communication Systems, B. P. Lathi, Oxford University Press., 4th edition.  An Introduction to Analog and Digital Communication, Simon Haykins, John Wiley India Pvt. Ltd., 2008, ISBN 978–81–265–3653–5.

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Sunil S Harakannanavar
Sunil S Harakannanavar
S. S. EDUCATION TRUST (R) S. G. BALEKUNDRI INSTITUTE OF TECHNOLOGY SHIVABASAV NAGAR BELAGAVI-10 PRINCIPLES OF COMMUNICATION SYSTEMS [15EC45] Notes as per VTU Syllabus for IV Semester Electronics & Communication Engineering Mr. Sunil S Harakannanavar BE,M.tech (Control Systems) Assistant Professor Department Of Electronics & Communication Engineering S G Balekundri Institute Of Technology, Belagavi-10 Email: sunilsh143@gmail.com Mobile: 7411844948
PRINCIPLES OF COMMUNICATION SYSTEMS [As per Choice Based Credit System (CBCS) Scheme] SEMESTER – IV (E&CE) Subject Code 15EC45 IA Marks Number of Lecture Hours/Week 04 Exam Hours Total Number of Lecture Hours 50 Exam Marks 20 03 80 CREDITS – 04 Course objectives: This course will enable students to:  Design simple systems for generating and demodulating AM, DSB, SSB and VSB signals  Understand the concepts in Angle modulation for the design of communication systems  Design simple systems for generating and demodulating frequency modulated signals  Learn the concepts of random process and various types of noise.  Evaluate the performance of the communication system in presence of noise.  Analyze pulse modulation and sampling techniques. Modules Teaching Hours (RBT)Level MODULE 1 AMPLITUDE MODULATION: Introduction, Amplitude Modulation: Time & Frequency – Domain description, Switching modulator, Envelop detector. DOUBLE SIDE BAND-SUPPRESSED CARRIER MODULATION: Time and Frequency – Domain description, Ring modulator, Coherent detection, Costas Receiver, Quadrature Carrier Multiplexing. SINGLE SIDE–BAND & VESTIGIAL SIDEBAND METHODS OF MODULATION: SSB Modulation, VSB Modulation, Frequency Translation, Frequency- Division Multiplexing, Theme Example: VSB Transmission of Analog and Digital Television. 10 Hours L1, L2, L3 10 Hours L1, L2, L3 10 Hours L1, L2, L3 10 Hours L1, L2, L3 MODULE 2 ANGLE MODULATION: Basic definitions, Frequency Modulation: Narrow Band FM, Wide Band FM, Transmission bandwidth of FM Signals, Generation of FM Signals, Demodulation of FM Signals, FM Stereo Multiplexing, Phase–Locked Loop: Nonlinear model of PLL, Linear model of PLL, Nonlinear Effects in FM Systems. The Superheterodyne Receiver. MODULE 3 RANDOM VARIABLES & PROCESS: Introduction, Probability, Conditional Probability, Random variables, Several Random Variables. Statistical Averages: Function of a random variable, Moments, Random Processes, Mean, Correlation and Covariance function: Properties of autocorrelation function, Cross–correlation functions. NOISE: Shot Noise, Thermal noise, White Noise, Noise Equivalent Bandwidth, Noise Figure. MODULE 4 NOISE IN ANALOG MODULATION: Introduction, Receiver Model, Noise in DSB-SC receivers, Noise in AM receivers, Threshold effect, Noise in FM receivers, Capture effect, FM threshold effect, FM threshold reduction, Pre-emphasis and De-emphasis in FM.
MODULE 5 DIGITAL REPRESENTATION OF ANALOG SIGNALS: Introduction, Why Digitize Analog Sources?, The Sampling process, Pulse Amplitude Modulation, Time Division Multiplexing, Pulse-Position Modulation, Generation of PPM Waves, Detection of PPM Waves, The Quantization Process, Quantization Noise, PULSE–CODE MODULATION: Sampling, Quantization, Encoding, Regeneration, Decoding, Filtering, Multiplexing, Application to Vocoder. 10 Hours L1, L2, L3 Course Outcomes: At the end of the course, students will be able to:  Determine the performance of analog modulation schemes in time and frequency domains.  Determine the performance of systems for generation and detection of modulated analog signals.  Characterize analog signals in time domain as random processes and in frequency domain using Fourier transforms.  Characterize the influence of channel on analog modulated signals  Determine the performance of analog communication systems.  Understand the characteristics of pulse amplitude modulation, pulse position modulation and pulse code modulation systems. Graduating Attributes (as per NBA)  Engineering Knowledge  Problem Analysis  Design / development of solutions (partly) Question paper pattern:      The question paper will have ten questions. Each full Question consisting of 16 marks. There will be 2 full questions (with a maximum of four sub questions) from each module. Each full question will have sub questions covering all the topics under a module. The students will have to answer 5 full questions, selecting one full question from each module. Text Book: Communication Systems, Simon Haykins & Moher, 5th Edition, John Willey, India Pvt. Ltd, 2010, ISBN 978 – 81 – 265 – 2151 – 7. Reference Books:  Modern Digital and Analog Communication Systems, B. P. Lathi, Oxford University Press., 4th edition.  An Introduction to Analog and Digital Communication, Simon Haykins, John Wiley India Pvt. Ltd., 2008, ISBN 978–81–265–3653–5.  Principles of Communication Systems, H.Taub & D.L.Schilling, TMH, 2011.  Communication Systems, Harold P.E, Stern Samy and A Mahmond, Pearson Edition, 2004.  Communication Systems: Analog and Digital, R.P.Singh and S.Sapre: TMH 2nd edition, 2007.
INDEX SL.NO CHAPTER CONTENTS PAGE NO. 1 2 3 MODULE 1 MODULE 2 MODULE 3 AMPLITUDE MODULATION: Introduction Time & Frequency – Domain description Switching modulator Envelop detector DOUBLE SIDE BAND-SUPPRESSED CARRIER MODULATION: Time and Frequency – Domain description Ring modulator Coherent detection Costas Receiver Quadrature Carrier Multiplexing SINGLE SIDE–BAND & VESTIGIAL SIDEBAND METHODS OF MODULATION: SSB Modulation ,VSB Modulation Frequency Translation Frequency- Division Multiplexing. ANGLE MODULATION: Basic definitions, Modulation: Narrow Band FM, Wide Band FM Transmission bandwidth of FM Signals Generation of FM Signals Demodulation of FM Signals Phase–Locked Loop: Nonlinear model of PLL Linear model of PLL Nonlinear Effects in FM Systems FM Stereo Multiplexing The Superheterodyne Receiver Frequency RANDOM VARIABLES & PROCESS: Introduction Random variables Probability, Conditional Probability Several Random Variables Statistical Averages: Function of a random variable Random Processes, Mean Moments Correlation Covariance function: Properties of autocorrelation function Cross–correlation functions NOISE: Shot Noise Thermal noise White Noise Noise Equivalent Bandwidth Noise Figure. 1-4 5-13 14-16 17-26 27-18 29-31 32-32 33-34 35-38 43-48 49-52 53-56 1-9 14-15 15-16 18-24 24-29 33-34 34-36 35-37 37-40 40-44 ------------------------------------------------------------------------1-4 5-7 8-9 9-12 13-13

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