Signal modulation scheme determination through an at least fourth-order noise-insensitive cumulant

摘要

Various embodiments associated with an at least fourth-order cumulant of a signal are described. The at least fourth-order noise-insensitive cumulant of the signal can be taken and compared against an at least fourth-order noise-insensitive cumulant of known signals. A match can be found between the signal and a known signal and from this match, a demodulation scheme of the signal can be determined. The demodulation scheme can be used to demodulate the signal.

主权项

1. A system, comprising:
a receiver configured to receive a signal; a determination component configured to make a determination of a modulation scheme of the signal, where the determination component uses an at least fourth-order cumulant of the signal to make the determination, where the at least fourth-order cumulant is noise insensitive, and where the modulation scheme is employed in demodulation of the signal; a calculation component configured to calculate the at least fourth-order cumulant of the signal after the signal is received by the receiver; a constellation component configured to make a determination of a constellation of the signal, where the determination of the constellation of the signal is made after the signal is received by the receiver and where the constellation of the signal is used to make the determination of the modulation scheme of the signal; a match component configured to make a match of the signal with a known signal; and a classification component configured to select a classification for the signal based, at least in part, on the known signal, where the classification is used to make the determination on the modulation scheme of the signal; a normalization component configured to normalize an amplitude of the signal, where the amplitude of the signal after normalization is employed in selection of the classification; a compensation component configured to determine a compensation for a change effect set of the signal, where the compensation is employed in selection of the classification; and a carrier component configured to estimate and remove a residual carrier frequency and phase of the signal, where the signal with the residual carrier frequency and phase removed is employed in selection of the classification.