Introduction about Analog Communication (EC8491-CT-UNIT-1)
EC8491-Communication Theory-Syllabus
UNIT I AMPLITUDE MODULATION (9)
Amplitude Modulation- DSBSC, DSBFC, SSB, VSB - Modulation index, Spectra, Power relations and Bandwidth - AM Generation – Square law and Switching modulator, DSBSC Generation – Balanced and Ring Modulator, SSB Generation – Filter, Phase Shift and Third Methods, VSB Generation – Filter Method, Hilbert Transform, Pre-envelope & complex envelope –comparison of different AM techniques, Superheterodyne Receiver
Anna University-2017R
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Biomedical Signals
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Need for Modulation,
Reduction in the height of the antenna,
Avoids mixing of signals,
Multiplexing is possible,
Improves quality of reception,
Increases the range of communication,
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