# Communication Theory - EC8491, EC6402

## UNIT I : AMPLITUDE MODULATION

Amplitude Modulation
AM Transmitters
SSB Transmission
Vestigial Side Band (VSB) Modulation
Double-sideband suppressed-carrier transmission (DSB-SC)
Hilbert Transform
Amplitude Modulation: Application & Uses
Important Short Questions and Answers: Amplitude Modulation

## UNIT II : ANGLE MODULATION

Frequency & Phase Modulation
Phase Modulation
Narrow Band FM Modulation
Wide-Band FM
FM Transmitter
Angle Modulation: Application and Uses
Important Short Questions and Answers: Angle Modulation

## UNIT III : RANDOM PROCESS

Random Variables
Central Limit Theorem
Stationary Process
Correlation
Covariance Functions
Ergodic Process
Guassian Processs
Linear Filtering of Random Processes
Application of Random Process
Important Short Questions and Answers: Communication Theory - Random Process

## UNIT IV : NOISE CHARACTERIZATION

Noise Characterisation
Analysis of Noise In Communication Systems
Classification of Noise
Noise in Cascade Systems
Narrow Band Noise
FM Capture Effect
Pre-Emphasis & De-Emphasis
FM Threshold Effect
Important Short Questions and Answers: Noise Characterisation

## UNIT V : SAMPLING AND QUANTIZATION

Sampling theorem for Low pass signals
Aliasing and signal reconstruction
Quantization
Types of Quantizers: Uniform and Non uniform quantization
Quantization Noise and Signal-to-Noise
Companding of Speech signal
Advantages of Non Uniform Quantization
Pulse code Modulation(PCM)
Time-Division Multiplexing (TDM)
Important Short Questions and Answers: Sampling & Quantization

## INFORMATION THEORY

Information Theory
Entropy
Discrete Memory less Channel
Channel Coding Theorem
Source Coding
Shannon-Fano Coding
Huffman Coding
Shannon-Hartley Theorem
Important Questions and Answers: Information Theory

EC6402 Communication Theory - Anna University 2013 Regulation Syllabus - Download Pdf
EC8491 Communication Theory - Anna University 2017 Regulation Syllabus - Download Pdf
Communication Theory - Question Bank 1 - Download Pdf

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Communication Theory - EC6402 May June 2015 Question Paper
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