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arXiv · 1405.4623

Training-Based SWIPT: Optimal Power Splitting at the Receiver

Xiangyun Zhou
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Abstract

We consider a point-to-point system with simultaneous wireless information and power transfer (SWIPT) over a block fading channel. Each transmission block consists of a training phase and a data transmission phase. Pilot symbols are transmitted during the training phase for channel estimation at the receiver. To enable SWIPT, the receiver adopts a power-splitting design, such that a portion of the received signal is used for channel estimation or data detection, while the remaining is used for energy harvesting. We optimally design the power-splitting ratios for both training and data phases to achieve the best ergodic capacity performance while maintaining a required energy harvesting rate. Our result shows how a power-splitting receiver can make the best use of the received pilot and data signals to obtain the optimal SWIPT performance.

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Xiangyun Zhou. 2014-05-19. Training-Based SWIPT: Optimal Power Splitting at the Receiver. https://doi.org/10.1109/tvt.2014.2364196

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