Abstract
Simultaneous Wireless Information and Power Transfer (SWIPT) systems are viable models to implement wireless charging in Broadcast Channel (BC) systems. With the emergence of Internet of Things (IOT) and the 5th generation of telecommunication systems (5G), to make lifelong powered devices, wireless charging gets wider attention in scientific and industrial community. To optimally design such a system, we optimize a multi-user multi-antenna BC by simultaneously maximizing the sum of harvested energy and minimizing the sum Mean Square Error (MSE) for symbol detection at each receiver node. To have a tractable design problem, we recast this multi-objective problem as a Difference of Convex (DC) bilinear problem. The derived design problem is solved using the Alternating Convex Search (ACS) method and the Penalty Convex-Concave Program (PCCP) procedure. We solve this problem under two conditions: the perfect and the imperfect Channel State Information (CSI). Simulation results prove that the proposed algorithm outperforms reported recent research studies in this field.
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