In this paper, we propose two resource allocation schemes for slotted ALOHA wireless powered communication networks (WPCNs) with channel aware energy harvesting users (EHUs) in Nakagami-m fading channels. Both schemes guarantee proportionally fair (PF) resource sharing among the EHUs. The resource allocation schemes determine the duration of the energy harvesting phase, the access probability, the transmit power of the base station, and the power allocation policy at the EHUs. The EHUs in both schemes transmit only when the channel fading conditions are favorable. When the first scheme is employed, the EHUs use truncated channel inversion power allocation at fixed rate transmission. In the second scheme, the EHUs use optimal power allocation policy with rates adjusted according to the channel fading states. Using numerical analysis we compare the performance of the proposed schemes in terms of network sum throughput and fairness to resource allocation schemes that are channel aware but don’t optimize the access probability and to resource allocation scheme where the EHUs exploit only statistical channel state information.

在本文中，我们提出了两种资源分配方案为时隙ALOHA无线供电的通信网络（WPCNs）与渠道了解能量收集用户（EHUs）在Nakagami-米衰落的频道。两种方案均保证EHU之间按比例公平（PF）进行资源共享。资源分配方案确定能量收集阶段的持续时间，接入概率，基站的发射功率以及EHU处的功率分配策略。两种方案中的EHU仅在信道衰落条件良好时发送。当采用第一种方案时，EHU在固定速率传输时使用截断的信道反转功率分配。在第二种方案中，EHU使用最优功率分配策略，并根据信道衰落状态调整速率。