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FULL-DUPLEX TWO-WAY MIMO RELAYING SYSTEM: TRANSCEIVER DESIGN AND REVIEW OF PHYSICAL LAYER SECURITYAuthors: Nachiket Ayir,Ubaidulla P Conference: 2017 5th IEEE Global Conference on Signal and Information Processing(GlobalSIP) Date: 2017-11-14 Report no: IIIT/TR/2017/127 AbstractIn this paper, we consider the design of optimal transceiver and re- lay processing algorithms for a full-duplex (FD) two-way amplify- and-forward (AF) multiple-input multiple-output (MIMO) relaying system. We assume the channel state information of loopback self- interference (SI) channels to be imperfect. The nodes employ pre- coders and receive filters for suppressing the residual SI. The optimal precoders at transceivers are designed by equalising the signal-to- interference-plus-noise ratio at the relay and transceiver. Using the transceiver precoders thus designed, we then design the optimal re- lay precoder and transceiver receive filters by minimizing the sum of mean square error at the transceivers. The optimal precoders and re- ceive filters are continuously updated to account for the cumulative interference effect caused by AF operation of the FD relay. The se- crecy performance of this system in the presence of a passive eaves- dropper is analyzed by considering the relay signal to be artificial noise for the eavesdropper. The effectiveness of the proposed design is demonstrated in our simulation results. Full paper: pdf Centre for Communications |
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