Multilevel modulator capable of producing a composite...

Details Multilevel modulator capable of producing a composite... Multilevel modulator capable of producing a composite...

H - Electricity

03

C

329/2, 332/39

H03C 5/00 (2006.01) H03D 1/00 (2006.01) H03D 3/22 (2006.01) H04L 27/34 (2006.01) H04L 27/36 (2006.01) H04L 27/38 (2006.01)

Patent

CA 1268828

Abstract of the Disclosure: Responsive to a first and a second main data signal and a subdata signal, a multilevel modulator produces a composite modulated signal which comprises a quadrature amplitude modulated component modulated by the first and the second main data signals and represented by a radius on a phase plane and a phase modulated component modulated by the subdata signal are represented by a clockwise and a counterclockwise shift on the phase plane. A multilevel demodulator carries out an inverse operation to reproduce the composite modulated signal into first and second reproduced main data signal and a reproduced subdata signal.

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