Quadrature product subcarrier modulation system

Details Quadrature product subcarrier modulation system Quadrature product subcarrier modulation system

2006-10-10

2006-10-10

Chin, Stephen (Department: 2634)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S213000, C370S487000, C370S229000

Reexamination Certificate

active

07120198

ABSTRACT:
A coherent adaptive subcarrier modulation system applies subcarrier modulation to quadrature modulated signals with constant envelope modulation suitable for efficient sinewave and squarewave subcarrier modulations. The quadrature subcarrier enables the addition of new signals to the in-phase and quadrature phase signals with spectral isolation in the Global Position System while maintaining a constant envelop amplitude.

REFERENCES:
patent: 3764731 (1973-10-01), Parker
patent: 3896487 (1975-07-01), Tesler
patent: 5461426 (1995-10-01), Limberg et al.
patent: 5469469 (1995-11-01), Haines
patent: 5748677 (1998-05-01), Kumar
patent: 5949796 (1999-09-01), Kumar
patent: 6246698 (2001-06-01), Kumar
patent: 6430213 (2002-08-01), Dafesh

Affiliated with

Also associated with

Rating

Quadrature product subcarrier modulation system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quadrature product subcarrier modulation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quadrature product subcarrier modulation system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3624386