Multiple wireless transmitters communicate with their information receivers while radiating RF energy to multiple nearby energy harvesters. The channels from the transmitters to the receivers and to the energy harvesters are time-varying and unknown. The transmitters jointly determine their multi-antenna transmissions to fairly charge all the energy harvesters while maintaining the signal-to-interference-and-noise ratio at the receivers. In this letter, this task is formulated as a combinatorial multi-armed bandit problem and is solved with the upper confidence bound algorithm. Numerical results show that the algorithm can quickly converge to the optimal strategy with moderate signaling overhead. It has superior performance in fair energy harvesting while maintaining communication quality.

中文翻译：

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无线信息和电力传输的多臂老虎机方法

多个无线发射器与其信息接收器通信，同时将射频能量辐射到多个附近的能量收集器。从发射器到接收器和能量收集器的通道是随时间变化的且未知的。发射器共同确定它们的多天线传输，以公平地为所有能量收集器充电，同时保持接收器的信噪比。在这封信中，这个任务被表述为一个组合多臂老虎机问题，并用置信上限算法解决。数值结果表明，该算法能够以适中的信令开销快速收敛到最优策略。在保持通信质量的同时，在公平能量收集方面具有卓越的性能。