Full duplex mixed FSO/RF relaying systems with self-interference and outdated CSI.

This paper investigates the performance of a mixed free-space optical (FSO)/radio frequency (RF) amplify and forward (AF) one-way full-duplex relay (FDR) system by considering the impact of feedback delay and co-channel interference (CCI) at the relay node. Of course, apart from CCI, the FDR operation introduces self-interference (SI) in the relay hardware. The relay selection using the selection cooperation technique is performed based on imperfect channel state information (CSI). Importantly, the statistics of the RF link with outdated CSI for α - μ distribution have been derived, and then the exact closed form expressions for the outage probability and bit error rate (BER) have been developed for non-zero boresight error on the FSO link. In addition to this, an approximate analysis of ergodic capacity along with the diversity order of the considered system model has also been derived. Finally, the numerical results are presented to corroborate the findings, and Monte-Carlo simulations are used to validate them. [ABSTRACT FROM AUTHOR]