A 19μW 200Mb/s IoT Tag Demonstrating High-Definition Video Streaming via a Digital-Switch-Based Reconfigurable 16-QAM Backscatter Communication Technique

📋 论文概要

本文提出了一种基于数字开关的可重构16-QAM背散射标签，在19μW超低功耗下实现了200Mb/s的数据率，并成功演示了高清视频流传输，解决了高吞吐量物联网应用对超低功耗和高频谱效率的需求。

💡 主要创新点

• 采用数字开关实现可重构16-QAM背散射调制，在保持极低功耗的同时显著提升数据率（200Mb/s）。
• 首次在亚毫瓦功耗级别实现高清视频流实时传输，展示了背散射技术在高吞吐量场景的可行性。

🏷 关键词

📄 原文摘要

Recent work in low-power backscatter modulation has enabled a new set of IoT applications requiring low-to-medium throughput [1-4]. However, applications demanding medium-to-high throughput still rely on mW-level conventional wireless transceivers (TRXs). The needs of spectral-efficient high-throughput wireless communications at ultra-low-power still remain unaddressed. Pragmatic deployment of high-throughput, ultra-low-power backscattering is currently hindered by the difficulty of achieving high data rate and extreme structural simplicity at the same time: for the work in [1] (Fig. 12.4.1, upper left), by adjusting the parallel resistance formed by the I/Q transistors through programmable amplifiers (PGAs) as shown, up to 32-QAM is supported, however, gain adjustment requirement limits the max data rate to 2.5Mb/s; a digital-switch-based backscatter modulator was proposed in [2] and [3] (Fig. 12.4.1,

👥 作者与机构

Yongling Zhang, Rongliang Luo, Ji Xiong, Siqi Liang, Miao Meng

Tongji University, Shanghai, China