# IT1251 INFORMATION CODING TECHNIQUES Syllabus

IT1251                INFORMATION CODING TECHNIQUES            3  0  0  100

AIM:
To introduce the fundamental concepts of information theory: data compaction, data compression, data transmission, error detection and correction.

OBJECTIVES:
•    To have a complete understanding of error–control coding.
•    To understand encoding and decoding of digital data streams.
•    To introduce methods for the generation of these codes and their decoding techniques.
•    To have a detailed knowledge of compression and decompression techniques.
•    To introduce the concepts of multimedia communication.

UNIT I        INFORMATION ENTROPY FUNDAMENTALS                 9
Uncertainty, Information and Entropy – Source coding Theorem – Huffman coding –Shannon Fano coding – Discrete Memory less channels – channel capacity – channel coding Theorem – Channel capacity Theorem.

UNIT II        DATA AND VOICE CODING                        9
Differential Pulse code Modulation – Adaptive Differential Pulse Code Modulation – Adaptive subband coding – Delta Modulation – Adaptive Delta Modulation – Coding of speech signal at low bit rates (Vocoders, LPC).

UNIT III    ERROR CONTROL CODING                         9
Linear Block codes – Syndrome Decoding – Minimum distance consideration – cyclic codes – Generator Polynomial – Parity check polynomial – Encoder for cyclic codes – calculation of syndrome – Convolutional codes.

UNIT IV     COMPRESSION TECHNIQUES                     9
Principles – Text compression – Static Huffman Coding – Dynamic Huffman coding – Arithmetic coding – Image Compression – Graphics Interchange format – Tagged Image File Format – Digitized documents – Introduction to JPEG standards.

UNIT V        AUDIO AND VIDEO CODING                         9

Linear Predictive coding – code excited LPC – Perceptual coding, MPEG audio coders – Dolby audio coders – Video compression – Principles – Introduction to H.261 & MPEG Video standards.

TOTAL : 45
TEXTBOOKS:

1.    Simon Haykin, “Communication Systems”, John Wiley and Sons, 4th Edition, 2001.
2.    Fred Halsall, “Multimedia Communications, Applications Networks Protocols and Standards”, Pearson Education, Asia 2002; Chapters: 3,4,5.

REFERENCES:
1.    Mark Nelson, “Data Compression Book”, BPB Publication 1992.
2.    Watkinson J, “Compression in Video and Audio”, Focal Press, London, 1995.
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