Part – I : Optical Communications
1. Introduction to Optical Communication Systems:
2. Optical Fibers: (3 hours)
a. Fiber Structures and Types, Rays and Modes
b. Single-mode and Multimode Fibers, Refractive Index Profiles, Graded Index Fiber
c. Numerical Aperture, Acceptance Angle, V-Parameter
d. Loss mechanisms in Fibers, Loss vs. Wavelength Plot and Its Significance
e. Dispersion Mechanisms in Fibers: Intermodal and Intramodal (Chromatic) Dispersions,
Components of Intramodal Dispersions, Dispersion vs. Wavelength Plots and Their
Significance.
3. Optical Sources:
a. Desired Features of Optical Sources for Optical Communication and Material Choices
b. LED Structure and Operating Principle
c. LED Modulation Characteristics: Output Power vs. Driving Current, Speed and Bandwidth
d. LED Driver Circuits for Optical Transmitters
e. LASER Structure and Operating Principle
f. LASER Modulation Characteristics: Output Power vs. Driving Current, Threshold Current
and Its Temperature Sensitivity, Speed and Bandwidth
g. LASER Driver Circuits for Optical Transmitters
4. Photodetectors:
a. Desired Features of Photodetectors
b. PIN Diode as Photodetector: Structure, Operating Principle, Shot Noise
c. Avalanche Photodiode (APD) as Photodetector: Structure, Operating Principle, Shot Noise,
Avalanche Multiplication (Excess) Noise
5. Digital Optical Communication Systems:
a. System Block Diagram
b. Optical Receiver Operation: Receiver Block Diagram, Sources of Noise, Preamplifier
Configurations, Transimpedance Amplifier as Preamplifier
c. Bit-Error Rate (BER) Evaluation, Receiver Sensitivity
d. System Power Budget
e. System Rise-Time Budget
Contd.
Part – II : Wireless Networks
1. Introduction to mobile wireless communication:
2. Cellular Mobile Wireless Networks: Systems and Design Fundamentals,
Propagation Models:
a. Description of cellular system
b. Frequency Reuse, Co-channel and Adjacent channel interferences
c. Propagation Models for Wireless Networks
d. Multipath Effects in Mobile Communication, Models for Multipath Reception
e. Mobile antenna system
3. Modern Mobile Wireless Communication Systems: ( 9 hours )
a. 2G network Global System for Mobile Communication (GSM)
b. Architecture and Protocols Air Interface
c. GSM Multiple Access Scheme, GSM Channel Organization
d. Traffic Channel Multi-frame, Control (Signaling) Channel Multi-frame, Frames,
Multi-frames, Super-Frames and Hyper-Frames
e. GSM Call Set up Procedure, GSM Protocols and Signaling
f. Location Update Procedure, Routing of a call to a Mobile Subscriber
g. The concept of packet data services - 2.5G GPRS networks:
h. The 2.5 G General Packet Radio Services, GPRS Networks Architecture, GPRS Interfaces
and Reference Points, GPRS Logical Channel, GPRS Mobility Management Procedures,
GPRS Attachment and Detachment Procedures
i. Session Management and PDP Context, Data Transfer Through GPRS Network and
Rout
j. GPRS Location Management Procedures, GPRS Roaming, the IP Internetworking
Model, GPRS Interfaces and Related Protocols, GPRS Applications
Part – III : Satellite Communication
1. Basics of Satellite Communication:
a. Satellite frequency bands
b. Basic Satellite system
c. Orbital period and velocity
d. Placement of Satellite in Geo-stationery orbit
2. Antenna and Conversion: ( 2 hours )
a. Paraboloid and Cassegrain antennas
b. Up & Down conversions
c. Conversion Process
d. Transponder and Polarization Hopping
e. Basic Satellite Link
Part – IV : Software Defined Radio
1. Fundamentals of Software Defined Radio:
a. Baseband Technology
b. Emergence of Software Defined Radio
c. Evolution of Software Defined Radio
d. Baseband requirements