EC2301 DIGITAL COMMUNICATION

EC2301 DIGITAL COMMUNICATION
L T P C
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UNIT I DIGITAL COMMUNICATION SYSTEM 8

Introduction to Analog Pulse Communication Systems – Digital Communication Systems
– Functional description, Channel classification, Performance Measure; Geometric
representation of Signals, Bandwidth , Mathematical Models of Communication Channel.

UNIT II BASEBAND FORMATTING TECHNIQUES 10

Sampling – Impulse sampling, Natural Sampling, Sampler Implementation; Quantisation
– Uniform and Non-uniform; Encoding Techniques for Analog Sources- Temporal
waveform encoding, Spectral waveform encoding, Model-based encoding, Comparison
of speech encoding methods.

UNIT III BASEBAND CODING TECHNIQUES 9

Error Control Codes - Block Codes , Convolutional Codes, Concept of Error Free
Communication; Classification of line codes, desirable characteristics and power
spectra of line codes.

UNIT IV BASEBAND RECEPTION TECHNIQUES 9

Noise in Communication Systems; Receiving Filter – Correlator type, Matched Filter
type; Equalising Filter - Signal and system design for ISI elimination, Implementation,
Eye Pattern analysis; Synchronisation; Detector – Maximum Likelihood Detector, Error
Probability, Figure-of-Merit for Digital Detection.

UNIT V BANDPASS SIGNAL TRANSMISSION AND RECEPTION 9
Memory less modulation methods - Representation and Spectral characteristics, ASK,
PSK, QAM, QPSK, FSK; Bandpass receiving filter, Error performance – Coherent and
Non-coherent detection systems.

TOTAL= 45 PERIODS

TEXT BOOKS:

1. Amitabha Bhattacharya, “Digital Communications”, Tata McGraw Hill, 2006.
2. Simon Haykin, “Digital Communications”, John Wiley, 2006.

REFERENCES:

1. John.G. Proakis, “Fundamentals of Communication Systems”, Pearson Education,
2006.
2. Michael. B. Purrsley, “Introduction to Digital Communication”, Pearson Education,
2006.
3. Bernard Sklar, Digital Communication, 2nd Edition, Paerson Education, 2006
4. Herbert Taub & Donald L Schilling – Principles of Communication Systems ( 3rd
Edition ) – Tata McGraw Hill, 2008.
5. Leon W. Couch, Digital and Analog Communication Systems, 6th Edition, Pearson
Education, 2001.