BM1004 ANALOG AND DIGITAL COMMUNICATION 3 0 0 100
By learning this subject, the student will understand various analog and digital communication fundamentals, transmitters and receivers and satellite.
• To provide various amplitude, frequency and pulse modulation and demodulation systems.
• To provide some analysis of noise performance of various
• To study some basic information theory.
• To gain some knowledge about data access via satellite.
UNIT I MODULATION SYTEMS 9
AM – Frequency Translation – single sideband and double sideband modulation, vestigial sideband modulation. FM phase and frequency modulation, FM spectral analysis, FM bandwidth, AM Modulators and FM modulators, AM Transmitters and FM Transmitters.
UNIT II RECEIVERS 9
Sensitivity, Selectivity, AM receivers, FM receivers, Noise in AM & FM systems, SNR in AM Receivers, signal to noise power in FM, Pre-emphasis and deemphasis.
UNIT III ANALOG TO DIGITAL CONVERSION 9
Sampling theorem, pulse amplitude modulation(PAM), pulse width modulation(PWM), pulse position modulation(PPM), pulse code modulation(PCM). Digital modulation and demodulation system. ASK, FSK, PSK.
UNIT IV INFORMATION THEORY 9
Average information, Information rate, Shannon’s theorem, channel capacity, bandwidth, S/N trade off.
UNIT V SATELLITE ACCESS 9
Modulation and multiplexing voice, data, video; Analog-Digital transmission system, Digital video broadcast, multiple access: FDMA, TDMA, CDMA, assignment methods, spread spectrum communication, compression, encryption.
TOTAL : 45
1. Taub & Schilling, “Principles of Communication systems”, McGraw-Hill, 1986.
1. Wayne Tomasi, “Electronic communication systems”, fundamentals through advanced, LPE, Pearson Education, Fourth Reprint, 2001.