López Morales, Manuel JoséDinis, RuiGarcía-Armada, Ana2023-07-262023-07-262023-01-12López Morales, Manuel José; Dinis, Rui; García Armada, Ana. Near-Optimal Detection of CE-OFDM Signals with High Power Efficiency via GAMP-based Receivers. In: 2022 IEEE Globecom Workshops (GC Wkshps) Proceedings, Rio de Janeiro, Brazil, 4-8 December 2022. IEEE, Jan. 2023, Pp. 7-12978-1-6654-5975-4https://hdl.handle.net/10016/37983Proceeding of: 2022 IEEE Globecom Workshops (GC Wkshps), Rio de Janeiro, Brazil, 4-8 December 2022A quasi-optimum receiver based on the generalized approximate message passing (GAMP) concept is proposed for constant envelope orthogonal frequency division multiplexing (CE-OFDM) signals. Large modulation index results in large power efficiency for CE-OFDM, but the phase modulator introduces nonlinear distortion effects, precluding good performance for a simple phase detector. Our simulation results show that the GAMP receiver can achieve quasi-optimum performance and it can outperform the linear OFDM and CE-OFDM with phase detectors, for both additive white Gaussian noise (AWGN) and frequency selective channels.6eng© 2022 IEEE.OFDMPhase modulationGAMPNonlinearityconference paperTelecomunicacioneshttps://doi.org/10.1109/GCWkshps56602.2022.10008696open access7122022 IEEE Globecom Workshops (GC Wkshps) Proceedings, Rio de Janeiro, Brazil, 4-8 December 2022CC/0000034486