Alaca, OzgurAlthunibat, SaudYarkan, SerhanMiller, Scott L.Qaraqe, Khalid A.2023-12-202023-12-202023https://hdl.handle.net/11467/7051https://doi.org/10.1109/BlackSeaCom58138.2023.10299730This study investigates the physical layer authentica tion (PLA) for the index modulation-based orthogonal frequency division multiple access (IM-OFDMA) systems by considering users’ in-phase and quadrature imbalances (IQI). Specifically, the PLA scheme is created for the uplink IM-OFDMA systems exploiting the IQI, forming at each user’s RF front-end as an identity. In a malicious user’s presence, the uplink IM-OFDMA scheme is examined, and the mathematical model for the proposed authentication scheme is established. Through the Monte Carlo simulation method, the performance of the proposed scheme is presented by employing two well-known performance metrics: authentication false rate and detection of malicious/authenticated users rate. The results for the proposed PLA scheme are demon strated under the different parameters of IM-OFDMA and IQI. The first-time implementation of a PLA scheme for the uplink IM-OFDMA system has shown promising results.eninfo:eu-repo/semantics/embargoedAccessAuthentication false rate, IM-OFDMA, index modulation, IQ imbalances, physical layer authenticationConference Object186190N/A2-s2.0-8517900430610.1109/BlackSeaCom58138.2023.10299730