Multilevel amplitude modulation and demodulation communication s

Details Multilevel amplitude modulation and demodulation communication s Multilevel amplitude modulation and demodulation communication s

1988-02-18

1989-08-22

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 27, 371 43, H04L 110, H04L 512

Patent

active

048603163

ABSTRACT:
A digital communication system using a QAM signal and a honeycomb constellation multilevel signal. The digital communication system includes a modulator having a unit for transforming in-phase and quadrature-phase data arranged in a quadrature lattice constellation into two data arranged in a honeycomb constellation, and a unit for amplitude-modulating the transformed data. A demodulator demodulates a transmitted signal output from the modulator.

REFERENCES:
patent: 3887768 (1975-06-01), Forney, Jr. et al.
patent: 4247944 (1981-01-01), Sifford
patent: 4630287 (1986-12-01), Armstrong
patent: 4675880 (1987-06-01), Davarian
patent: 4721928 (1988-01-01), Yoshida

Affiliated with

Also associated with

Rating

Multilevel amplitude modulation and demodulation communication s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multilevel amplitude modulation and demodulation communication s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilevel amplitude modulation and demodulation communication s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2420920