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Write a note on Quadrature amplitude modulation.
written 6.0 years ago by gravatar for teamques10 teamques10 ★ 69k •   modified 6.0 years ago

Subject: Principles of Communication Engineering

Difficulty : Medium

Marks : 05
principles of communication network
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written 6.0 years ago by gravatar for teamques10 teamques10 ★ 69k •   modified 6.0 years ago

Block diagram:

Transmitter:

enter image description here

Explanation:

Figure shows transmitter for 4 bit QAM system. The input bit stream is applied to a serial to parallel converter. Four successive bits are applied to the digital to analog converter. These bits are applied after every Ts second. Ts is the symbol period & Ts=4Tb. …

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