Syllabus - ADC (Analog & Digital Communication) (EI 503 (A))

Electronics & Instrumentation Engineering

ADC (Analog & Digital Communication) (EI 503 (A))

V-Semester

Unit-1

Signals and Random Variables

Types of signals: deterministic & random, periodic & non-periodic, analog & discrete, energy & power signals. Fourier series, Fourier transform and its properties, Gaussian and Rayleigh probability density function, mean, variance and standard deviation, central limit theorem, Voltage & Power decibel Scales.

Unit-2

Amplitude Modulation

Need of modulation in a communication system, block schematic of a typical communication system. AM modulation system, modulation index, generation & detection of AM wave, side bands & power content in an AM wave, DSB-SC, SSB, their methods of generation & detection, AM transmitter block diagram.

Unit-3

Frequency Modulation

Relationships between phase & frequency modulation, FM wave & its spectrum, Phasor diagram of narrowband FM signal, wideband FM, methods of generation & detection of FM, discriminators, pre-emphasis & de-emphasis.

Unit-4

Receivers and Noise

TRF receiver & its limitations, necessity of heterodyning, Super heterodyne radio receivers, IF amplifiers & selection of intermediate frequency, RF amplifiers, detectors. Sources of noise, noise figure, noise bandwidth, effective noise temperature.

Unit-5

Introduction to Digital Communication

Nyquist sampling theorem, time division multiplexing, Pulse modulations and PCM, quantization error, introduction to BPSK & BFSK, Shannon’s theorem for channel capacity.

Practicals

Reference Books

  • Lathi B.P.,Anolog and Digital Communication Systems, Oxford Press.

  • Singh R.P. &Sapre, Communication Systems Analog& Digital, TMH.

  • Kennedy George, Electronic Communication System, McGraw Hill.