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Module 2: Digital Modulation

20257m

Explain the fundamentals of a digital communication system with a neat block diagram.

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Digital Communication System: Source→Source Encoder (compression, Huffman)→Channel Encoder (error control, Hamming/conv, adds parity)→Modulator (ASK/PSK/FSK/QAM, digital→analog)→Channel (AWGN)→Demodulator→Channel Decoder→Source Decoder→Destination. Metrics RbR_b, BER, Eb/N0E_b/N_0. Source removes redundancy, channel adds controlled redundancy.

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