BCA Syllabus – Modern Communication Systems

6. 4 Modern Communication Systems

Third Year          Part III Group A                 Sixth Semester                Subject Code:   

Unit - 1

Modulation – Need for modulation – Amplitude modulation – Frequency spectrum – Power relation – Detection of AM waves SSB generation detection – VSB – AM transmitters – Block Diagram – High level & Low level transmitters.

Unit - 2

Angle modulation – Principle of frequency and phase modulation – Relation between FM and PM waves band width of FM – Narrow and wide band FM – Single tone and multi tone FM – Generation of FM waves – Direct and indirect methods – Detection of FM waves – FM transmitters block diagram – Superheterodine receivers – Choice of IF and oscillator frequency – Tracking – AGC – AFC – Receiver characteristics

Unit - 3

Phase modulation system – Sampling theorem- pulse amplitude modulation – Pulse time modulation – Generation of PWM and PPM PCM – Quantization – Encoder and Decoder – TDM and FDM – Digital modulation techniques – ASK, FSK and PSK

Unit - 4

(Block diagram approach)Microwave communication – Line of sight – Over the Horizon and Troposcatter links – Satellite communication – Domestic satellite system – Mobile Communication – Cellular mobile concepts- Radar: Basic Radar system – Radar range equation – Pulsed radar system

Unit – 5

(Block diagram approach) Fiber optical communication : Need – Principles of optical communication – Transmissions in fiber – optical fiber communication system – Optical light sources – Photo detectors – Advantages - Television Engineering: Basic principles – Camera tubes – Bandwidth considerations – Generation of Composite Video – Monochrome and colour transmitters – Picture tubes – HDTV – Flat screen TV.

TEXT BOOKS:

           

1.      G.Kennedy, Electronic communication System, McGraw Hill. 1989.

REFERENCE BOOKS:

1.      SIMON HAYKINS: Communication systems, 2/e, John Wiley.

2.      D.ROODY and J.COOLEN :            Electronic communication, 4/e, Prentice Hall of India, 1991