This paper develops a new distributed power control scheme for a powersplitting-based interference channel (IFC) with simultaneous wirelessinformation and power transfer (SWIPT). The considered IFC consists of multiplesource-destination pairs. Each destination splits its received signal into twoparts for information decoding and energy harvesting (EH), respectively. Eachpair adjusts its transmit power and power splitting ratio to meet both thesignal-to-interference-plus-noise ratio (SINR) and EH constraints at itscorresponding destination. To characterize rational behaviors ofsource-destination pairs, we formulate a non-cooperative game for theconsidered system, where each pair is modeled as a strategic player who aims tominimize its own transmit power under both SINR and EH constraints at thedestination. We derive a sufficient and necessary condition for the existenceand uniqueness of the Nash equilibrium (NE) of the formulated game. The bestresponse strategy of each player is derived and then the NE can be achievediteratively. Numerical results show that the proposed game-theoretic approachcan achieve a near-optimal performance under various SINR and EH constraints.
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