# Digital Communication (2161001)

## Teaching Scheme (in Hours)

Theory Tutorial Practical Total
4 0 2 0

Subject Credit :  6

Theory
ESE (E)
Theory
PA (M)
Practical
ESE Viva (V)
Practical
PA (I)
Total
70 30 30 20 150

## Syllabus Content

###### Unit-1:  Base Band Modulation :

Base band system, sampling theorem, Sampling and signal reconstruction, Aliasing, Types of sampling, Quantization, PCM, Companding, DPCM, ADPCM, Delta modulation, Adaptive delta modulation, T1 carrier system

###### Unit-2:  Digital Data Transmission :

Components of digital communication system, line coding, pulse shaping, Scrambling, Regenerative Repeater, Eye Diagram, Timing Extraction, Detection Error Probability, M-ary communication, Digital Carrier Systems

###### Unit-3:  Digital Modulation Techniques :

Modulation techniques for ASK, QASK, FSK, M-ary FSK, BPSK, DPSK, DEPSK, QPSK, M-ary PSK, QAM, MSK, GMSK

###### Unit-4:  Digital Carrier Demodulation Techniques :

Coherent and non coherent detection of ASK, QASK, FSK, PSK, QPSK, M-ary PSK, DPSK, Noise temperature, Noise bandwidth, Noise figure

###### Unit-5:  Probability Theory and Random Variable :

Concept of probability, Conditional probability and independent event, random variable, types of random variable, CDF, PDF, Statistical Averages, Chebyshev’s inequality, Central limit theorem, Concept of correlation,

###### Unit-6:  Information Theory :

Measure of information, Entropy, Source encoding, Error free communication over noisy channel, channel capacity of discrete memory less channel, Channel capacity of continuous channel, Practical communication system in lights of Shannon theorem

###### Unit-7:  Error Correcting Codes :

Introduction, Linear Block Code, Cyclic Code, Burst error detecting and correcting codes, Interlace codes for burst and random error correction, Convolution Code, Comparison of coded and un coded system