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SWIPT in MISO Full-Duplex Systems
Alexander Akpofure Okandeji,Muhammad R. A. Khandaker,Kai-Kit Wong,Gan Zheng,Yangyang Zhang,Zhongbin Zheng,Ruopeng Liu 한국통신학회 2017 Journal of communications and networks Vol.19 No.5
This paper investigates a multiuser multiple-input singleoutput(MISO) full-duplex (FD) system for simultaneous wirelessinformation and power transfer (SWIPT), in which a multiantennabase station (BS) simultaneously sends wirelessly informationand power to a set of single-antenna mobile stations (MSs) usingpower splitters (PSs) in the downlink and receives informationin the uplink in FD mode. In particular, we address the joint designof the receive PS ratio and the transmit power at the MSs, andthe beamforming matrix at the BS under signal-to-interferenceplus-noise ratio (SINR) and the harvested power constraints. Usingsemidefinite relaxation (SDR), we obtain the solution to theproblem with imperfect channel state information (CSI) of the selfinterferingchannels. Furthermore, we propose another suboptimalzero-forcing (ZF) based solution by separating the optimizationof the transmit beamforming vector and the PS ratio. Simulationresults are provided to evaluate the performance of the proposedbeamforming designs.