UNIVERSITY OF MADRAS
B.Sc. DEGREE COURSE IN ELECTRONICS SCIENCE
SEMESTER SYSTEM WITH CREDITS
(Effective from the Academic Year 2003-2004)

Semester V - Paper XI - Communication Electronics

Duration: 3 hrs
Maximum Marks: 100
Credits: 4

Unit-1

Amplitude Modulation and Demodulation Definition of Amplitude modulation- Generation and detection of Amplitude Modulation-Balanced Modulator - DSB/SC Modulation and detection of SSB-VSB modulation- Frequency Division Multiplexing (FDM)-Block Diagram of AM Radio Transmitter and Superheterodyne Receiver.

Unit-2

Frequency Modulation and Demodulation : Definition of Frequency Modulation- Generation of FM-Direct and Indirect Method-Varactor Diode-ModulationFM.Detection-Slope detection -Phase Discriminator-Ratio Detector-Comparison of AM and FM-Block diagram of FM Radio Transmitter and Receiver.

Unit-3

Analog Pulse Modulation : Sampling Theorem - Basic Principles of Pulse Amplitude Modulation (PAM)-Pulse Width Modulation-Pulse Position Modulation.

Unit-4

Digital Pulse Modulation and Demodulation : Pulse Code Modulation-Quantizing and Coding-Generation and Demodulation of PCM wave -Quantizing Noise-Application of PCM-Delta Modulation- Adaptive Delta Modulation.

Unit-5

Data Transmission : Time Division Multiplexing (TDM) in PCM- Binary Systems - Amplitude Shift Keying(ASK),Frequency Shift Keying(FSK) and Phase Shift Keying(PSK)-Detection of Digital Communication Signals.

Books for study and reference