Enabling OFDMA in Wi-Fi Backscatter
文献类型：期刊论文
| 作者 | Zhu, Fengyuan2; Zhao, Renjie2,3; Wang, Bingbing2; Wang, Xinbing2; Guan, Xinping2; Zhou, Chenghu1; Tian, Xiaohua2 |
| 刊名 | IEEE-ACM TRANSACTIONS ON NETWORKING
 |
| 出版日期 | 2023-07-10 |
| 页码 | 18 |
| ISSN号 | 1063-6692 |
| 关键词 | OFDMA backscatter Wi-Fi |
| DOI | 10.1109/TNET.2023.3290370 |
| 通讯作者 | Tian, Xiaohua(xtian@sjtu.edu.cn) |
| 英文摘要 | This paper for the first time demonstrates how to enable OFDMA in Wi-Fi backscatter for capacity and concurrency enhancement. With our design, the excitation signal is reflected, modulated and shifted to lie in the frequency band of the OFDM subcarrier by the tag; OFDMA is realized by coordinating tags to convey information to the receiver with orthogonal subcarriers concurrently through backscatter. The crux of the design is to achieve strict synchronization among communication components, which is more challenging than in regular OFDMA systems due to the more prominent hardware diversity and uncertainty for backscattering. We reveal how the subtle synchronization scenarios particularly for backscattering can incur system offsets, and present a series of novel designs for the excitation signal transmitter, tag, and receiver to address the issue. We build a prototype in 802.11g OFDM framework to validate our design. Experimental results show that our system can achieve 5.2-16Mbps aggregate throughput by allowing 48 tags to transmit concurrently, which is 1.45-5x capacity and 48x concurrency compared with the existing design respectively. We also design an OFDMA tag IC, with the corresponding simulation and numerical analysis results show that the tag's power consumption is in tens of mu W. |
| 资助项目 | National Key Research and Development Program of China[2020YFB1708700] ; National Natural Science Foundation of China[61922055] ; National Natural Science Foundation of China[92167205] ; National Natural Science Foundation of China[61872233] ; National Natural Science Foundation of China[61829201] ; National Natural Science Foundation of China[61532012] ; National Natural Science Foundation of China[61325012] ; National Natural Science Foundation of China[61428205] |
| WOS研究方向 | Computer Science ; Engineering ; Telecommunications |
| 语种 | 英语 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| WOS记录号 | WOS:001030660000001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/195986]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tian, Xiaohua |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Shanghai Jiao Tong Univ SJTU, Sch Elect Informat & Elect Engn SEIEE, Shanghai 200240, Peoples R China 3.Univ Calif San Diego, Elect & Comp Engn Dept, La Jolla, CA 92093 USA |
| 推荐引用方式 GB/T 7714 | Zhu, Fengyuan,Zhao, Renjie,Wang, Bingbing,et al. Enabling OFDMA in Wi-Fi Backscatter[J]. IEEE-ACM TRANSACTIONS ON NETWORKING,2023:18. |
| APA | Zhu, Fengyuan.,Zhao, Renjie.,Wang, Bingbing.,Wang, Xinbing.,Guan, Xinping.,...&Tian, Xiaohua.(2023).Enabling OFDMA in Wi-Fi Backscatter.IEEE-ACM TRANSACTIONS ON NETWORKING,18. |
| MLA | Zhu, Fengyuan,et al."Enabling OFDMA in Wi-Fi Backscatter".IEEE-ACM TRANSACTIONS ON NETWORKING (2023):18. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。