Abstract
We investigate the rate-splitting (RS)-based robust transceiver design problem in a multi-antenna interference channel with simultaneous wireless information and power transfer under the norm-bounded errors of channel state information at transmitters. The beamforming vectors, power splitting ratios, and target common rates are jointly optimized via minimizing the total transmit power subject to the quality of service and energy harvesting requirements. The non-convex problem with infinite constraints is first transformed into finite-constraint convex one and then jointly solved by a gradient-based algorithm. The results demonstrate that the RS-based robust schemes outperform the conventional robust designs.
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