Digital Communication - EC8501, EC6501

EC8501 Regulation 2017 Digital Communication

UNIT I : INFORMATION THEORY

=> Information Theory
=> Entropy
=> Discrete Memory less Channel
=> Channel Coding Theorem
=> Source Coding
=> Shannon-Fano Coding
=> Huffman Coding
=> Shannon-Hartley Theorem
=> Important Questions and Answers: Information Theory

UNIT II : WAVEFORM CODING AND REPRESENTATION

=> Linear Predictive Coding
=> Differential Pulse Code Modulation (DPCM)
=> Delta Modulation (DM)
=> Adaptive Delta Modulation
=> Important Short Questions and Answers: Waveform Coding

UNIT IIII BASEBAND TRANSMISSION AND RECEPTION

=> Properties of Line Codes
=> Power spectral density of unipolar NRZ line code
=> Manchester encoding
=> Nyquist Criterion for Zero-ISI
=> Inter symbol Interference
=> Eye Pattern
=> Equalising Filter
=> Important Short Questions and Answers: Baseband Transmission

UNIT IV : DIGITAL MODULATION SCHEME

=> Geometric representation of Signals
=> Generation and Coherent Detection of BPSK Signals
=> Power Spectrum or BPSK Modulated Signal
=> Frequency Shit Keying Modulation
=> Quadrature Phase Shift Keying (QPSK)
=> QAM(Quadrature Amplitude Modulation)
=> Important Short Questions and Answers: Digital Modulation Scheme

UNIT V : ERROR CONTROL CODING

=> Linear block and Hamming codes
=> Convolutional codes
=> Vitterbi Decoding Algorithm
=> Important Short Questions and Answers: Error Control Coding

EC6501 Regulation 2013 Digital Communication

UNIT I : SAMPLING and QUANTIZATION

=> Sampling theorem for Low pass signals
=> Aliasing and signal reconstruction
=> Quantization
=> Types of Quantizers: Uniform and Non uniform quantization
=> Quantization Noise and Signal-to-Noise
=> Companding of Speech signal
=> Advantages of Non Uniform Quantization
=> Pulse code Modulation(PCM)
=> Time-Division Multiplexing (TDM)
=> Important Short Questions and Answers: Sampling & Quantization

UNIT II : WAVEFORM CODING

=> Linear Predictive Coding
=> Differential Pulse Code Modulation (DPCM)
=> Delta Modulation (DM)
=> Adaptive Delta Modulation
=> Important Short Questions and Answers: Waveform Coding

UNIT III : BASEBAND TRANSMISSION

=> Properties of Line Codes
=> Power spectral density of unipolar NRZ line code
=> Manchester encoding
=> Nyquist Criterion for Zero-ISI
=> Inter symbol Interference
=> Eye Pattern
=> Equalising Filter
=> Important Short Questions and Answers: Baseband Transmission

UNIT IV : DIGITAL MODULATION SCHEME

=> Geometric representation of Signals
=> Generation and Coherent Detection of BPSK Signals
=> Power Spectrum or BPSK Modulated Signal
=> Frequency Shit Keying Modulation
=> Quadrature Phase Shift Keying (QPSK)
=> QAM(Quadrature Amplitude Modulation)
=> Important Short Questions and Answers: Digital Modulation Scheme

UNIT V : ERROR CONTROL CODING

=> Linear block and Hamming codes
=> Convolutional codes
=> Vitterbi Decoding Algorithm
=> Important Short Questions and Answers: Error Control Coding