IFT patent “Method and system for hybrid modulation and demodulation” has been granted under patent # is 11438021. Inventors include Dan Shen, Khanh Pham, Tien Nguyen and Genshe Chen. This is IFT’s 29th granted patent, and the 31st granted patent for an IFT-related project.

Abstract: A system for hybrid modulation and demodulation includes a transmitter and a receiver. The transmitter is configured to receive a hybrid signal of a space-ground link system (SGLS), including a first component and a second component; perform a double sideband (DSB) modulation on the first component using a carrier frequency to obtain the first waveform; perform a single sideband (SSB) modulation on the second component using the carrier frequency to obtain a second waveform; mix the first waveform and the second waveform to generate a hybrid waveform, and transmit the hybrid waveform. The receiver is configured to receive the hybrid waveform; determine the carrier frequency; separate the first waveform and the second waveform; perform a DSB demodulation on the first waveform to obtain a first demodulated signal, and perform an SSB demodulation on the second waveform to obtain a second demodulated signal.