Signal processing method based on quasi high-order square spectrum

• Main Authors: ZHANG HUINING, REN GUANGLIANG, JIANG DAOFU
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a signal processing method based on a quasi high-order square spectrum. The signal processing method based on the quasi high-order square spectrum comprises the steps of: (1),obtaining a time-domain complex baseband signal; (2), obtaining an envelope sequence and a phase sequence of the time-domain complex baseband signal; (3), obtaining a quasi high-order square signal; (4), obtaining the quasi high-order square spectrum of the time-domain complex baseband signal; and (5), obtaining the spectrum refined quasi high-order square spectrum of the time-domain complex baseband signal. According to a quasi high-order square spectrum calculation method adopted in the invention, the spectral line characteristics of the traditional high-order square spectrum are reserved; furthermore, the operation complexity of calculating the high-order square spectrum is greatly reduced; the spectral line characteristic detection performance of the high-order square spectrum is improved; and thus, the identi