First backscatter tag that realizes software-defined PHY
SD-PHY backscatter is the first backscatter tag that realizes a software-defined PHY. It means that it can communicate with different PHY protocols even without hardware modifications. Just calculating a few PHY parameter values and write to the tag, it can move to another PHY protocol in an online manner, no restart is requested. So far, it supports Wi-Fi (802.11b/g/n), BLE (Bluetooth Low Energy), LoRa (Long Range) and LTE (Long-term Evolution). Besides, it supports customized PHY protocols like OFDMA backscatter [PDF] and Distributed CSS [PDF]. It can support other protocols as long as you find appropriate PHY parameters values and write to it.
SD-PHY hardware platform is made open-source. The PCB hardware is designed using Altium Designer 19. You can download the schematics as well as the layout files in this project.
SD-PHY is featured by its generic baseband design. The whole baseband is realized in a low-power FPGA by GOWIN Inc. The binary file to be burnt into the FPGA can be downloaded in this project.
Our academic paper of SD-PHY backscatter is published in ACM MobiSys '22. [PDF] To use our SD-PHY platform in your research, please cite our paper in your work. An ACM reference format should be: Fengyuan Zhu, Mingwei Ouyang, Luwei Feng, Yaoyu Liu, Xiaohua Tian, Meng Jin, Dongyao Chen, and Xinbing Wang. 2022. Enabling software-defined PHY for backscatter networks. In Proceedings of the 20th Annual International Conference on Mobile Systems, Applications and Services (MobiSys '22). Association for Computing Machinery, New York, NY, USA, 330–342. https://doi.org/10.1145/3498361.3538927.
- Fengyuan Zhu (jsqdzhufengyuan@sjtu.edu.cn)
- Ouyang Mingwei (1999mrou@sjtu.edu.cn)
- Luwei Feng (yundanfengqing@sjtu.edu.cn)
- Yaoyu Liu (lyyu19@sjtu.edu.cn)