作者
Fusang Zhang, Zhaoxin Chang, Jie Xiong, Rong Zheng, Junqi Ma, Kai Niu, Beihong Jin, Daqing Zhang
发表日期
2021/6/24
期刊
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies
卷号
5
期号
2
页码范围
1-25
出版商
ACM
简介
Despite extensive research effort in contact-free sensing using RF signals in the last few years, there still exist significant barriers preventing their wide adoptions. One key issue is the inability to sense multiple targets due to the intrinsic nature of relying on reflection signals for sensing: the reflections from multiple targets get mixed at the receiver and it is extremely difficult to separate these signals to sense each individual. This problem becomes even more severe in long-range LoRa sensing because the sensing range is much larger compared to WiFi and acoustic based sensing. In this work, we address the challenging multi-target sensing issue, moving LoRa sensing one big step towards practical adoption. The key idea is to effectively utilize multiple antennas at the LoRa gateway to enable spatial beamforming to support multi-target sensing. While traditional beamforming methods adopted in WiFi and Radar …
引用总数
学术搜索中的文章
F Zhang, Z Chang, J Xiong, R Zheng, J Ma, K Niu, B Jin… - Proceedings of the ACM on Interactive, Mobile …, 2021