Multilevel amplitude modulation and demodulation...

Details Multilevel amplitude modulation and demodulation... Multilevel amplitude modulation and demodulation...

H - Electricity

04

L

329/3, 332/64

H04L 27/02 (2006.01) H04L 27/34 (2006.01)

Patent

CA 1301864

MULTILEVEL AMPLITUDE MODULATION AND DEMODULATION COMMUNICATION SYSTEM ABSTRACT OF THE DISCLOSURE A digital communication system using a QAM signal and a honeycomb constellation multilevel signal. The digital communication system includes a modulator (100a) having a unit (101) transforming in-phase and quadrature-phase data (D(i), D (q)) arranged in a quadrature lattice constellation into two data arranged in a honeycomb constellation, and a unit (102) amplitude-modulating the transformed data, and a demodulator (200a) for demodulating a transmitted signal output from the modulator.

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