Apparatus for performing alternating quadratures differential binary phase shift keying modulation and demodulation
AssigneeTeledyne Licensing, LLC
InventorYefim Samullovich Poberezhskiy
Life of this patent
Estimating the term…
Abstract
Methods, apparatus, and systems for alternating quadratures differential binary phase shift keying (AQDBPSK) modulation and demodulation radically increase overall energy efficiency of a communication system due to the combined effect of efficient utilization of transmitter power, high noise immunity of modulation and demodulation, fast synchronization, and simple implementation.
Claims13
An apparatus for communicating information from a source to a destination by way of differential binary phase shift keying, comprising:
- a modulator that limits phase differences between adjacent in time modulator output signals to no more than about ±90° and transmits data by 0° and 180° phase differences between non-adjacent in time modulator output signals.
An apparatus for receiving information sent from a source to a destination by way of differential binary phase shift keying, comprising:
- a demodulator that receives first and second parity modulated input signals having first phase differences between adjacent in time different parity modulated input signals and second phase differences between non-adjacent in time modulated input signals, the first phase differences being limited to about ±90° and the second phase differences being 0° or 180°, the demodulator being responsive to the second phase differences to produce demodulated output data.
Dependencies are inferred from the claim text.