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Digital Communication

By Tara Birla, Jyoti Sharma

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Rs. 290


Specifications of Digital Communication

Book Details

  • 978-93-80311-17-3
  • English
  • 2010, 2011, 2012, 2013, 2014
  • Paper Back
  • -


  • 1. Introduction
    Objectives, Introduction, Fourier Series, Exponential form of the Fourier Series, Normalized Power, Power Spectral Density, Effect of Transfer Function on Power Spectral Density, The Fourier Transform, Convolution, Autocorrelation, Probability, Mutually Exclusive Events, Joint Probability of Related and Independent Events, Random Variables, Cumulative Distribution Function, Probability Density Function, Relation between Probability and Probability Density, Average Value of a Random Variable, Variance of a Random Variable, The Gaussian Probability Density, The Error Function, Solved Problems, Summary, Review Questions.
    2. PCM and Delta Modulation Systems
    Objectives, Introduction, Quantization, Uniform Quantizers, Non Uniform Quantizer, Quantization Error, Pulse Code Modulation, The PCM System, A PCM Generator (Transmitter), PCM Transmission Path, PCM Receiver, Transmission Bandwidth in a PCM System, Signal to Quantization Noise Ratio in PCM, Calculation of Quantization Noise, The Output Signal Power, The Effect of Thermal Noise, Output Signal to Noise Ratio in PCM, When Signal Power is Normalized, When the Input to the PCM System is a Sinusoidal Signal, Advantages and Limitations of PCM, Differential Pulse Code Modulation (DPCM), Delta Modulation, Slope Overload Distortion (Start-up Error), Granular Noise, Quantization Noise in Delta Modulation, The Output-Signal Power in Delta Modulation, Delta Modulation Output Signal to Quantization Noise Ratio, Adaptive Delta Modulation, Advantages of Adaptive Delta Modulation, A PCM-TDM System: T1 Carrier System, Some Important Terms, Optimum Filter, The Optimum Receiver, Maximization of Output Signal to Noise Ratio, Matched Filter, Physical Reliability of Matched Filter, Properties of Matched Filters, Approximations in Matched Filter, Probabilistic Approach for Optimum Receiver Design, Likelihood Ratio, Correlation Receiver, Implementation of Correlation Receiver, Probability of Error in PCM System, Comparison of Digital Pulse Modulation Methods, Solved Problems, Summary, Short Questions with Answers, Review Questions, Unsolved Problems, Multiple Choice Questions, Answer Key.
    3. Base Band Transmission
    Objectives, Introduction, A Digital Communication System, Various Line Codes or PAM Formats, Unipolar Return to Zero (RZ) and Non-Return to Zero (NRZ), Polar RZ and NRZ, Bipolar NRZ [Pseudo Ternary or Alternate Mark Inversion (AMI)], Split Phase Manchester, Polar Quaternary NRZ, High-Density Bipolar (HDB) Signaling, Binary with 8 Zero Substitution (B8ZS) Signaling, Power Spectral Densities of Discrete PAM Signals (Various Line Codes), Power Spectral Density (PSD) of Unipolar NRZ Format, Power Spectral Density (PSD) of Polar NRZ Format, Power Spectral Density (PSD) of Bipolar NRZ Format, Power Spectral Density (PSD) of the Manchester Format, Comparison of Various Line Codes, Source Coding Versus Line Coding, Intersymbol Interference, Effect of Intersymbol Interference, Remedy to Reduce ISI (Pulse Shaping), Nyquist’s Criterion for Distortionless Baseband Binary Transmission, Ideal Nyquist Channel, Raised Cosine Spectrum, Solved Problems, Summary, Short Questions with Answers, Review Questions, Unsolved Problems, Multiple Choice Questions, Answer Key.
    4. Digital Modulation Techniques
    Objectives, Introduction, Digital Modulation Formats, Basic Requirements for Passband Transmission Scheme, Passband Signal Detection Types, Geometric Interpretation of Signals, Orthogonalization, Completeness of an Orthogonal Set: The Fourier Series, The Gram-Schmidt Procedure, Binary Modulation Techniques, Binary Amplitude Shift Keying or On-Off Keying:, Binary Phase Shift Keying (BPSK), Binary Frequency Shift Keying (BFSK), Differential Phase Shift Keying (DPSK), Generation of DPSK Signal, Detection of DPSK Signal, Bandwidth of DPSK Signal, Advantages of DPSK, Drawbacks of DPSK, Differentially Encoded Phase Shift Keying (DEPSK), Quadrature Phase-Shift Keying (QPSK), Generation of QPSK Signal, Detection of QPSK Signal, Carrier Synchronization in QPSK, Signal Space Diagram of QPSK Signal, Power Spectral Density of QPSK Signal, Bandwidth of QPSK Signal, Advantages of QPSK, M-ary PSK, Generation of M-ary PSK, Detection of M-ary PSK, Signal Space Diagram of M-ary PSK Signal, Power Spectral Density of M-ary PSK, Bandwidth of M-ary PSK, Distance between Signal Points (Euclidean Distance), M-ary FSK, Generation of M-ary FSK Signal, Detection of M-ary FSK Signal, Signal Space Diagram of M-ary FSK, Power Spectral Density of M-ary FSK, Bandwidth of M-ary FSK, Quadrature Amplitude Shift Keying (QASK), Signal Space Diagram of QASK Signal, Generation of QASK, Detection of QASK Signal, Power Spectral Density of QASK Signal, Comparison between QASK and QPSK, Minimum Shift Keying (MSK), Signal Space Diagram of MSK, Power Spectral Density of MSK, Bandwidth of MSK, Phase Continuity in MSK, Generation of MSK Signal, MSK Demodulator, Advantages of MSK as compared to QPSK, Drawbacks of MSK, Comparison of Digital Modulation Techniques, Calculation of Error Probabilities, Error Probability in the Coherent Detection of Binary ASK, Error Probability in the Coherent Detection of Binary Phase Shift Keying, Error Probability in Coherently Detected Binary Orthogonal FSK, Error Probability for Binary Orthogonal DPSK, Probability of Error for QPSK, Error Probability of MSK, Comparison of Noise Performances of Digital Systems, Solved Problems, Summary, Short Questions with Answers, Review Questions, Unsolved Problems, Objective Type Questions, Answer Key.
    5. Information Theory
    Objectives, Amount of Information, Average Information, Entropy, Information Rate, The Source Coding, Terms Related to Source Coding Process, Source Coding Theorem, Classification of Codes, Kraft Inequality, Increase in Average Information per bit by Coding (Entropy Coding), Shannon-Fano Algorithm, Huffman Coding, Discrete Memoryless Channels, Channel Representation, Channel Matrix, Special Channels, Mutual Information, Conditional and Joint Entropies, Mutual Information, Shannon’s Theorem, Channel Capacity, Capacity of a Gaussian Channel, Bandwidth - S/N tradeoff, Solved Problems, Summary, Short Question with Answers, Review Questions, Unsolved Problems, Multiple Choice Questions, Answer Key.
    6. Coding
    Objectives, Introduction, Coding and Decoding of Information, Disadvantages of Coding, Classification of Codes, Error Detection Techniques, Parity Checking, Checksum Error Detection, Error Detection using VRC and LRC (Single bit Parity Codes), Important terms in Error Control Coding, Linear Block Codes, Generator Matrix, Parity Check Matrix, Syndrome Decoding for Linear Block Codes, Hamming Codes, Error Detection and Correction Capability of Hamming Codes, Encoder of (7,4) Hamming Code, Hamming Bound, Other Linear Block Codes, Single Parity-Check Bit Code, Repeated Codes, Hadamard Code, Extended Codes, Cyclic Codes, Code Word Polynomial, Generator Polynomial, Generation of Code Vectors in Non Systematic Form, Generation of Code Vectors in Systematic Form, Generator Matrix of Cyclic Codes, Parity-Check Polynomial, Syndrome Polynomial, Encoder for Cyclic Codes, Syndrome Calculator, Decoder for Cyclic Codes, Advantages of Cyclic Codes, Disadvantage of Cyclic Code, Bose-Chaudhri-Hocquenghem Codes (BCH Codes), Reed-Solomon Codes, Goley Codes, Convolutional Codes, Convolutional Coder, Code Rate, Constraint Length (K), Dimension of the Convolution Code, Impulse Response of the Encoder, Generator Polynomial, Code Tree, Trellis and State Diagram, Decoding of Convolutional Codes, Free Distance and Coding Gain, Solved Problems, Summary, Short Questions with Answers, Review Questions, Unsolved Problems, Multiple Choice Questions, Answer Key.
    A. Appendix
    P. Papers