Resource allocation for RSMA communications impaired by power amplifier distortions – RARIPA

The project focuses on the challenges of modern and future wireless networks, such as 5G and 6G technologies, in the face of increasing user numbers and resource management requirements. Traditional multiple access techniques, such as Orthogonal Frequency-Division Multiple Access (OFDMA), are showing their limits. New approaches, such as Non-Orthogonal Multiple Access (NOMA) and Spatial-Division Multiple Access (SDMA), are being explored, but they also have their drawbacks in terms of interference management. Rate-Splitting Multiple Access (RSMA) is emerging as a hybrid solution, combining signal separation and superposition. However, the impact of nonlinear power amplifiers on RSMA has not been sufficiently studied. The objectives of the project are to evaluate these nonlinear distortions and propose resource allocation algorithms to improve the throughput of RSMA systems. In short, the project aims to optimize the performance of wireless networks using the RSMA technique, taking into account the effects of nonlinear amplifiers.