Demodulator for multilevel amplitude modulation system

Details Demodulator for multilevel amplitude modulation system Demodulator for multilevel amplitude modulation system

H - Electricity

04

L

329/3, 329/5

H04L 25/06 (2006.01) H04L 27/06 (2006.01) H04L 27/38 (2006.01)

Patent

CA 1224542

ABSTRACT OF DISCLOSURE "Demodulator for Multilevel Amplitude Modulation System" Multilevel base band signals are applied to a full-wave rectifying section which produces a first and second outputs. These outputs are applied to an analog-to-digital converting means which produces a plurality of recovered binary digital signal and an error signal. A controller is supplied with at least one recovered binary digital signal and the error signal, and produces two control signals which are fed to the full-wave rectifying section to compensate (a) first DC-drifts superimposed on the multilevel base band signal and (b) second DC-drifts generated within the full-wave rectifying section itself.

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