AMPLITUDE MODULATION: Introduction, Amplitude Modulation: Time & Frequency Domain description, Switching modulator, Envelop detector. (3.1 -3.2 inText)
DOUBLE SIDE BAND-SUPPRESSED CARRIERMODULATION: Tune and Frequency Domain description, Ring modulator, Coherent detection, Costas Receiver, Quadrature Carrier Multiplexing. (3.3-3.4 in Text)
SINGLE SIDE-BAND AND VESTIGIAL SIDEBAND METHODS OF MODULATION: SSB Modulation, VSB Modulation, Frequency Translation, Frequency- Division Multiplexing,Theme Example: VSB Transmission of Analog and Digital Television. (3.5- 3.8 inText) L1,Ll,L3
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 (4.1- 4.6 of Text) Ll,L2,L3
{Review of Mean, Correlation and Covariance functions of Random Processes. (No questions to be set on these topics)]
NOISE - Shot Noise, Thermal noise, White Noise, Noise Equivalent Bandwidth (5.10 inText)
NOISE INANALOG 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 (6.1- 6.6 inText) Ll,L2,L3
SAMPLING AND QUANTIZATION: Introduction, Why Digitize Analog Sources?, The Low pass Sampling process Pulse Amplitude Modulation. Time Division Multiplexing, Pulse-Position Modulation, Generation of PPM Waves, Detection of PPM Waves.(7.1-7.7 in Text) L1,L2,L3
SAMPLING AND QUANTIZATION (Contd): The Quantization Random Process, Quantization Noise, Pulse-Code Modulation: Sampling, Quantization, Encoding, Regeneration, Decoding, Filtering, Multiplexing; Delta Modulation (7.8 -7.10 in Text), Application examples- (a) Video + MPEG (7.11 in Text) and (b) Vocoders (refer Section 6.8 of Reference Book 1). L1,L2,L3
Course Outcomes:
After studying this course, students will be able to:
1. Analyze and compute performance of AM and FM modulation inthe presence of noise at the receiver.
2 Analyze and compute performance of digital formatting processes with quantization noise.
3. Multiplex digitally formatted signals at Transmitter.
4. Demultiplex the signals and reconstruct digitally formatted signals at the receiver.
5. Design /Demonstrate the use of digital formatting in Multiplexers, Vocoders and Video transmission.
Question paper pattern:
• Examination will be conducted for 100 marks with question paper containing 10 full questions, each of 20 marks.
• Each full question can have a maximum of 4 sub questions.
• There will be 2 full questions from each module covering all the topics of the module.
• Students will have to answer 5 full questions, selecting one full question from each module.
• The total marks will be proportionally reduced to 60 marks as SEE marks is60.
TextBook:
1. ''Communication Systems", Simon Haykin & Moher, 5th Edition, John Wiley, India Pvt. Ltd, 2010, ISBN 978-81-265-2151-7.
Reference Books:
1. Modem Digital and Analog Communication Systems, B. P. Lathi, Oxford University Press, 4th edition.
2. An Introduction to Analog and Digital Communication, Simon Haykin, John Wiley India Pvt. Ltd., 2008, ISBN 978-81-265-3653-5.
3. Principles of Communication Systems, H.Taub & D.L.Schilling, TMH, 2011.
4. Communication Systems, Harold P.E, SamyA. Mahmoud, Lee Elliott Stern, Pearson Edition, 2004.