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In this paper, the authors consider the idea of a MIMO On Frequency Repeater (OFR), with end-to-end MIMO channel rank preservation, MIMO aware repeater output-to-input self-interference cancellation, and a new repeater output-to-input beamforming based interference mitigation method for MIMO signals. The latter is used to increase the repeater output-to-input isolation and in turn increase the communication rate and range. The MIMO-OFR idea is compared via simulation to two 2-phase forwarding methods. Through simulation, they observe higher mean channel capacity and improved outage probability for the proposed idea.
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