College - Tele Syllabus - Sem 8

Computer Communication and Networks

Delay Models in Data Networks: Multiplexing of traffic on accomodation links, Queing Model, Little's theorem, M/M/1 queing system, M/M/m/m Markoy system, M/G/1 systems, Networks of transmission lines, time reversibility, Burk's theorem, Jackson's theorem.

Multi Access Communication: Aloha and Slotted Aloha Multi access system, Splitting algorithms, carrier sensing, Multi- access reservation, Packet Radio Network.

Routing in Data Network: Network algorithms for shortest path, Broadcasting, Routing information, Flow models, Optimal routing and topological design, characterisation of optimal routing, feasible direction methods for optimal routing in CODEX Network.

Flow Control: Window flow control, rate control schemes, overview of flow control in practice, rate adjustment algorithm

Microwave II:

Periodic structures and filters: Capacitively loaded transmission lines circuit analysis, wava analysis of periodic structures, matching of periodic structures, microwave filters.

Microwave Tubes: Electron beams with D.C. Conditions, space charge waves on beams with confined flow, A.C. power relations, Velocity Modulation, 2 Cavity Klystron, Magnetron, TWT Gyrators.

Solid State Amplifiers: Bipolar Transistor, FET, Microwave Amplifier Design using sij parameters, Low noise amplifier design.

Parametric Amplifiers: PN Junction diodes, Manley-Rowe Relations, Parametric up Converters, Negative Resistance Parametric Amplifier.

Oscillators and Mixers: Gunn Oscillator, Impatt diodes, Transistors, Oscillators, Oscillator Design, Mixers, Balanced Mixers.

Microwave Measurement: Measurement of frequency, wave length, attenuation, power, impedance, dielectric measurement, antenna gain.

Elective 1: Mobile Cellular Systems

Introduction: Cellular system, 800MHz Spectrum Allocation, Trucking Efficiency, Performance Criteria, Operation of cellular systems, Hexagonal shaped cells, Analog and Digital Cellular systems.

Elements of Cellular Radio System: General Description, Concept of Frequency reuse channel, Co-channel interference reduction factor, Desired C/I from a normal case in an Omni-Directional Antenna system, Hand off mechanism, Cell splitting, Consideration of the components of cellular system.

Specification of Analog System : Definition of terms and functions, Specification of the Mobile Station, Specification of the Mobile Station.

Cell Coverage for Signal Traffic: Introduction, Obtaining mobile point to point model, propagation over water and open area, Foliage loss, Propagation in near distance, long distance propagation, Call site antenna heights and signal coverage cells, Mobile to Mobile propagation. Cell-Site Antenna and Mobile Antenna: Equivalent circuits of antenna, the Gain and Pattern Relationship, Sum and Difference Pattern, unique situation of cell site antenna, antenna at cell site, mobile antenna.

Frequency Management and Channel Assignments: Frequency Management, Frequency Spectrum Utilisation Setup Channels, Definition of Channel assignment, Fixed and Non-Fixed Channel Assignment Algorithm, Traffic and Channel Assignment

Switching and Traffic: Cellular Analog Switching Equipment, Cellular Digital Switching Equipment, Handling of Traffic, MTSD interconnection, small switching system, System Enhancement.

Data Links and Microwaves: Data Links, Microwave Links, Ray Bending Phenomenon, System Reliability, Microwave Antennas.

Elective 2: Satellite Communication:

Overview of satellite communication system

Orbital aspect of Satellite Communication: Orbital mechanics, look angle determination, orbital perturbation, orbital position determination, launches and launch vehicles, orbital effects in communication system performance.

Space Crafts: Spacecraft sub-systems, altitude and orbit control systems, telemetry tracking and command, power systems, communication systems, spacecraft antennae, reliability.

Satellite link design: Basic Transmission Theory, system Noise, Temperature and G/T Ratio, Design of Downlink, Domestic Satellite using small earth station. Uplink Design, Design of link for specified C/N.

Modulation and Multiplexing: Techniques for satellite links, analogue or dispersal telephone system, analogue television transmission, Energy Dispersal, Digital Transmission of Voice, Digital Modulation and Demodulation, Digital TV and Band width Compression, Time Division Multiplexing.

Multiple Access System: Frequency Division Multiple access (FDMA), FMD/FM/FDMA, Time Division Multiple Access(TDMA), Bit, Symbol, Channel, Frame Structure design, TDMA Synchronization & Timing, Code Division Multipple Access, Spread Spectrum, Transmission and Reception, Estimation of Channel Requirements, Practical demand access system, random access, multiple access with on board processing.

Earth Station Technology: Earth Station Design, Basic Antenna Theory, Designing large antennas, Tracking, Small Earth Stations Antennas, Equipment for earth stations, video receive only systems, Frequency co-ordination.

Project II

Further to Sem VII work, the students shall collect all necessary information and analyse it. The students shall prepare and submit a report on their project. Broadly the report shall have 4 parts: Introduction, Literature Review, Data collection, Experiments conducted, Software Implementation etc.

Acquaintance with survey and research methods and their use in conducting a systematic investigation and style of report preparation and presentation shall form the basis of evaluation.