Digital carrierless amplitude and phase modulation (CAP)...

Details Digital carrierless amplitude and phase modulation (CAP)... Digital carrierless amplitude and phase modulation (CAP)...

2006-06-20

2006-06-20

Burd, Kevin (Department: 2631)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S298000

Reexamination Certificate

active

07065145

ABSTRACT:
A method and apparatus for carrierless amplitude and phase CAP encoding of data in a manner avoiding the use of pulse shaping filters for in-phase and quadrature impulse signals. Specifically, in-phase and quadrature vector arithmetic structures (VAS) to adapt respective in-phase and quadrature impulse components to produce appropriate shaped in-phase and quadrature components.

REFERENCES:
patent: 5668749 (1997-09-01), Corleto et al.
patent: 5812594 (1998-09-01), Rakib
patent: 5910970 (1999-06-01), Lu
patent: 5930299 (1999-07-01), Vannatta et al.
patent: 6611567 (2003-08-01), Balakrishnan et al.

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