On performance of RIS-aided bidirectional full-duplex systems with combining of imperfect conditions

This article evaluates performance metrics in terms of outage probability (OP), throughput, and energy efficiency (EE) of the reconfigurable intelligent surface (RIS) assisted full-duplex (FD) wireless communication systems under the joint and separate effects of imperfect conditions such as residual transceiver hardware impairments (RTHIs) and residual self-interferences (SIs). More specifically, we derive the exact formulas of OP, throughput, and EE of the RSI-aided-FD systems with the joint effects of RTHIs and residual SIs. From the obtained expressions, it is easy to formulate the formulas of the relevant systems such as RIS-aided-FD systems without RTHIs and RIS-aided-half-duplex (HD) systems without and with RTHIs. Numerical illustrations clarify the huge impacts of RTHIs and residual SIs on the OP, throughput, and EE of the RIS-aided-FD systems, especially in the high data rate. In this situation, utilizing a large number of reflecting elements (REs) can dramatically enhance the OP, throughput, and EE performance of the RIS-aided-FD systems with RTHIs and residual SIs. Finally, the derived formulas are validated by using Monte-Carlo simulations.