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Energy harvesting is a promising solution to prolong the operation of energy-constrained wireless networks. In particular, scavenging energy from ambient radio signals, namely Wireless Energy Harvesting (WEH), has recently drawn significant attention. In this paper, the authors consider a point-to-point wireless link over the flat-fading channel subject to the time-varying co-channel interference. It is assumed that the receiver has no fixed power supplies and thus needs to replenish energy via WEH from the unintended interference and/or the intended signal sent by the transmitter. They further assume a single-antenna receiver that can only decode information or harvest energy at any given time due to the practical circuit limitation.
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