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Digital Communication

Practical project ideas and implementations for hands-on learning

Equalising Filter

Eye Pattern

Inter symbol Interference

Manchester encoding

Nyquist Criterion for Zero-ISI

Power spectral density of unipolar NRZ line code

Properties of Line Codes

Frequency Shift Keying Modulation

Generation and Coherent Detection of BPSK Signals

Geometric representation of Signals

Power Spectrum or BPSK Modulated Signal

QAM (Quadrature Amplitude Modulation)

Quadrature Phase Shift Keying (QPSK)

Convolutional codes

Linear block and Hamming codes

Viterbi Decoding Algorithm

Channel Coding Theorem

Discrete Memory less Channel

Entropy

Huffman Coding

Information Theory

Shannon-Fano Coding

Shannon-Hartley Theorem

Source Coding

Advantages of Non Uniform Quantization

Aliasing and signal reconstruction

Companding of Speech signal

Pulse code Modulation (PCM)

Quantization

Quantization Noise and Signal-to-Noise

Sampling theorem for Low pass signals

Time-Division Multiplexing (TDM)

Types of Quantizers: Uniform and Non uniform quantization

Adaptive Delta Modulation

Delta Modulation (DM)

Differential Pulse Code Modulation (DPCM)

Important Short Questions and Answers: Waveform Coding

Linear Predictive Coding

Adaptive Delta Modulation

Delta Modulation (DM)

Differential Pulse Code Modulation (DPCM)

Linear Predictive Coding