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Proportional Fairness-Based Beamforming and Signal Splitting for MISO-SWIPT Systems

The problem of proportional fairness-based beamforming and power splitting is investigated for simultaneous wireless information and power transferring systems. Due to the non-convexity of the formulated problem, a suboptimal solution is proposed based on the classical zero-forcing beamforming (ZFBF) and maximal ratio transmission techniques. To overcome the limitation of the ZFBF technique, a successive approximation-based algorithm is proposed. Simulation results verify the effectiveness of the proposed algorithms.