JNTUK R20 3-1 Digital Communications Material PDF Download

JNTUK R20 3-1 Digital Communications Material PDF Download

Students those who are studying JNTUK R20 ECE Branch, Can Download Unit wise R20 3-1 Digital Communications Material/Notes PDFs below.

JNTUK R20 3-1 Digital Communications Material PDF Download

OBJECTIVES:

• Understand pulse digital modulation systems such as PCM, DPCM andDM.
• Understand various digital modulation techniques and able to analyze various systems for their performance in terms of probability oferror.
• Study the concepts of information theory and need for sourcecoding.
• Study Block codes, cyclic codes and convolutioncodes.

UNIT-1

PULSE DIGITAL MODULATION: Elements of digital communication systems, advantages of digital communication systems, Elements of PCM: Sampling, Quantization & Coding, Quantization error, Companding in PCM systems. Differential PCM systems(DPCM). Delta modulation, its draw backs, adaptive delta modulation, comparison of PCM and DM systems, noise in PCM and DM systems.

Download UNIT-1 Material PDF | Reference-2

UNIT-2

DIGITAL MODULATION TECHNIQUES: Introduction, ASK, FSK, PSK, DPSK, DEPSK, QPSK, M-ary PSK, ASK, FSK, similarity of BFSK and BPSK.

Download UNIT-2 Material PDF

UNIT-3

DATA TRANSMISSION : Base band signal receiver, probability of error, the optimum filter, matched filter, probability of error using matched filter, coherent reception, non-coherent detection of FSK, calculation of error probability of ASK, BPSK, BFSK,QPSK.

Download UNIT-3 Material PDF | Reference-2

UNIT-4

INFORMATION THEORY: Discrete messages, concept of amount of information and its properties. Average information, Entropy and its properties. Information rate, Mutual information and its properties.

Download UNIT-4 PART-A Material PDF | Reference-2

SOURCE CODING: Introductions, Advantages, Shannon’s theorem, Shanon-Fano coding, Huffman coding, efficiency calculations, channel capacity of discrete and analog Channels, capacity of a Gaussian channel, bandwidth –S/N trade off.

Download UNIT-4 PART-B Material PDF | Reference-2

UNIT-5

LINEAR BLOCK CODES: Introduction, Matrix description of Linear Block codes, Error detection and error correction capabilities of Linear block codes, Hamming codes, Binary cyclic codes, Algebraic structure, encoding, syndrome calculation, BCH Codes.

CONVOLUTION CODES: Introduction, encoding of convolution codes, time domain approach, transform domain approach. Graphical approach: state, tree and trellis diagram decoding using Viterbi algorithm.

Download UNIT-5 Material PDF | Reference-2

TEXT BOOKS:

1. Digital communications – Simon Haykin, John Wiley, 2005
2. Digital and Analog Communication Systems – Sam Shanmugam, John Wiley,2005.

REFERENCE BOOKS:

1. Principles of Communication Systems – H. Taub and D. Schilling, TMH,2003
2. Digital Communications – John Proakis, TMH, 1983. Communication Systems Analog& Digital – Singh & Sapre, TMH, 2004.
3. Modern Digital and Analog Communication Systems –B.P.Lathi, Zhi Ding, Hari Mohan Gupta, Oxford University Press,4th Edition, 2017

OUTCOMES:

1. Analyze the performance of a Digital Communication System for probability of error and are able to design a digital communicationsystem.
2. Analyze various source codingtechniques.
3. Compute and analyze Block codes, cyclic codes and convolutioncodes.
4. Design a coded communicationsystem.