6EC4-DIGITAL COMMUNICATION |
Units: I-PCM & DELTA MODULATION SYSTEMS : |
Uniform and Non-uniform quantization. PCM and
delta modulation, Signal to quantization noise ratio in PCM and delta modulation. DPCM, ADM, T1
Carrier System, Matched filter detection. Error probability in PCM system.
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Units: II-BASE BAND TRANSMISSION: |
Line coding(RZ,NRZ): Polar,Bipolar,Manchester,AMI. Inter
symbol interference, Pulse shaping, Nyquist criterion, Raised cosine spectrum. |
Units: III-DIGITAL MODULATION TECHNIQUES : |
Geometric interpretation of signals,Orthogonalization.
ASK, BPSK, BFSK, QPSK, MSK modulation techniques and Coherent detection of these techniques.
Calculation of error probabilities.
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Units: IV-INFORMATION THEORY : |
Amount of Information, Average Information, Entropy, Information
rate, Increase in Average information per bit by coding, Shannon's Theorem and Shannon's bound,
Capacity of a Gaussian Channel, BW-S/N trade off,
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Units: V-CODING: |
Coding and decoding of Information, Hamming code, Single Parity-Bit Code, Linear
Block code, cyclic code & convolutional code.
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