Method for performing dual phase pulse modulation

Details Method for performing dual phase pulse modulation Method for performing dual phase pulse modulation

2007-10-16

2007-10-16

Kinkead, Arnold (Department: 2817)

Modulators

Pulse or interrupted continuous wave modulator

Pulse position, frequency, phase, or spacing modulator

C332S106000, C332S109000, C375S239000, C370S215000, C370S205000

Reexamination Certificate

active

10836705

ABSTRACT:
A modulation method, referred to as dual phase pulse modulation (DPPM), represents digital data as a series of high and low pulses whose widths represent groups of M data bits, with both the high and low pulses representing successive M-bit groups. Each of the 2Mpossible data values for a group of M data bits uniquely corresponds to one of 2Mdistinct pulse widths. This modulation method is essentially clockless, with data being decoded from a signal by detecting each pulse's width with respect to the last transition. Power consumption is reduced by having M data bits represented for each pulse transition, and by using both the high and low pulses to represent data.

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