Improper Gaussian signaling on the common stream in RSMA outperforms proper Gaussian signaling for rates when successive interference cancellation is imperfect, with closed-form optima derived for some objectives and a reinforcement learning algorithm for sum-rate maximization.
Resource allocation for RSMA-based symbiotic radio systems under imperfect SIC and CSI,
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Utilizing Improper Gaussian Signaling for Downlink Rate-Splitting Multiple Access with Imperfect Successive Interference Cancellation
Improper Gaussian signaling on the common stream in RSMA outperforms proper Gaussian signaling for rates when successive interference cancellation is imperfect, with closed-form optima derived for some objectives and a reinforcement learning algorithm for sum-rate maximization.