In this letter, we evaluate the age-energy tradeoff of a network composed of a single Internet-of-Things (IoT) end-device (ED) that has randomly generated status updates to transmit to an access point (AP). More specifically, we elaborate on a recently proposed truncated automatic repeat request (TARQ) scheme by considering that the AP is provided with multiple antennas, operating either under the selection combining (SC) or the maximum ratio combining (MRC) techniques. Our results indicate that the proposed schemes, which we refer to as TARQ-SC and TARQ-MRC, provide a better age-energy tradeoff when compared to TARQ, being capable of achieving lower age-of-information (AoI) and energy consumption simultaneously.

中文翻译：

---

具有接收器分集的截断 ARQ 重传的年龄-能量权衡

在这封信中，我们评估了由单个物联网 (IoT) 终端设备 (ED) 组成的网络的年龄-能量权衡，该网络具有随机生成的状态更新以传输到接入点 (AP)。更具体地说，我们考虑到 AP 具有多个天线，在选择合并 (SC) 或最大比率合并 (MRC) 技术下运行，详细说明了最近提出的截断自动重复请求 (TARQ) 方案。我们的结果表明，与 TARQ 相比，所提出的方案（我们称为 TARQ-SC 和 TARQ-MRC）提供了更好的年龄-能量权衡，能够同时实现较低的信息年龄（AoI）和能耗.