Module 1:

Introduction to Analog Communication

Elements of communication system - Transmitters, Transmission channels & receivers

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Concept of modulation, its needs

,

Frequency domain representation of signals

,

Principles of Amplitude Modulation and Demodulation

,

Modulation index

,

Power content and bandwidth requirement Systems

,

DSB(Balanced Modulator for DSB-SC, Phase Shift method for SSB-SC), SSB and VSB modulations

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Angle Modulation(reactance modulator)

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Demodulation Systems(PLL or frequency discriminator)

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Representation of FM and PM signals

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Spectral characteristics of angle modulated signals

Module 2:

Random Processes

Review of probability and random process

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Gaussian and white noise characteristics

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Rayleigh's energy theorem

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Parseval's theorem

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Fourier transform pair Power spectral density

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Autocorrelation likelihood functions

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Noise in amplitude modulation systems

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Pre-emphasis

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De-emphasis

Module 3:

Pulse modulation

Basic block diagram of Digital Communication system

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advantages of digital communication system over analog communication system

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Sampling theorem

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Quantization

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quantization error Pulse modulation techniques PAM, PWM, PPM

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Pulse code modulation (PCM)

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Line coding

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Regenerative repeater

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differential pulse code modulation

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Delta modulation

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Noise analysis

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PCM-TDM

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Time Division multiplexing