RT Conference Proceedings T1 Near-Optimal Detection of CE-OFDM Signals with High Power Efficiency via GAMP-based Receivers A1 López Morales, Manuel José A1 Dinis, Rui A1 García-Armada, Ana AB A 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. PB IEEE SN 978-1-6654-5975-4 YR 2023 FD 2023-01-12 LK https://hdl.handle.net/10016/37983 UL https://hdl.handle.net/10016/37983 LA eng NO Proceeding of: 2022 IEEE Globecom Workshops (GC Wkshps), Rio de Janeiro, Brazil, 4-8 December 2022 NO This work received funding from the European Union (EU) Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie ETN TeamUp5G, grant agreement No. 813391, the Spanish National Project IRENE-EARTH (PID2020-115323RB-C33) (MINECO/AEI/FEDER, UE) and Portuguese FCT Instituto de Telecomunicaçoes project UIDB/50008/2020. DS e-Archivo RD 27 jul. 2024