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- W4313396962 abstract "The sixth generation advocates green communications, thus energy efficiency (EE) has become an important metric. In this study, a method to increase the EE of a reconfigurable intelligent surface (RIS) aided point-to-point communication system is proposed, where both sources are equipped with multi-antenna and operate in the full-duplex (FD) mode. The extra power consumption for self-interference cancellation in the FD mode is considered and modelled as a linear function of the transmission power. The EE maximisation problem is divided into an active beamforming subproblem for the two multi-antenna sources and a passive beamforming subproblem for RIS, and an alternative optimisation framework is adopted to solve them iteratively. Dinkelbach's method is used to address the fractional objective function in the active beamforming optimisation problem. The penalty method and successive convex approximation are exploited for passive beamforming design. Simulation results show that the scheme can greatly boost the EE performance compared with the half-duplex mode and is superior to the sum-rate-maximisation scheme in larger transmission power settings. The proposed method can be used to extend the lifetime of communication devices without deteriorating communication performance." @default.
- W4313396962 created "2023-01-06" @default.
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- W4313396962 date "2022-12-30" @default.
- W4313396962 modified "2023-09-25" @default.
- W4313396962 title "Energy efficiency of full‐duplex communication system assisted by reconfigurable intelligent surface" @default.
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- W4313396962 doi "https://doi.org/10.1049/cmu2.12558" @default.
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