Digital modulation and shift keying

Details Digital modulation and shift keying Digital modulation and shift keying

2008-04-15

2008-04-15

Bayard, Emmanuel (Department: 2611)

Pulse or digital communications

Transmitters

Angle modulation

C375S289000

Reexamination Certificate

active

07359455

ABSTRACT:
The present invention discloses an apparatus and a method of modulating a carrier with digital information having a series of datums represented in a plurality of symbols, the method comprising selecting a first number of half-periods of a first phase distinguished carrier signal for representing a corresponding symbol of a first one of the datums, selecting a second number of half-periods of a second phase distinguished carrier signal for representing a corresponding symbol of the datum following the first datum, determining at least one matching carrier signal having a third number of half-periods of a format to conform to a transition of the first phase distinguished carrier signal to the second phase distinguished carrier signal, and sequentially arranging the first number of half-periods of the first phase distinguished carrier signal, the third number of half-periods of the matching carrier signal and the second number of half-periods of the second phase distinguished carrier signal.

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