RF signal generation is expensive and takes a lot of power. Hitchhike tackles this problem by recycling the ambient RF signals to embed the data from an IoT device.
We have developed a novel hierarchical wake-up receiver for backscatter tags to synchronize with incident signals. Traditional backscatter tags suffer from loss of synchronization resulting in lot of bit errors and limit the tag placement close to the transmitter. Here we demonstrate a wake-up receiver to enable synchronization at the tag at a very low power and increase the tag’s working range.
A WiFi and Bluetooth Backscattering Combo Chip Featuring Beam Steering via a Fully-Reflective Phased-Controlled Multi-Antenna Termination Technique Enabling Operation Over 56 Meters [Slides]
Shihkai Kuo, Manideep Dunna, Patrick Mercier, Dinesh Bharadia
SyncScatter: Enabling WiFi like synchronization and range for WiFi backscatter Communication [Slides]
Manideep Dunna, Miao Meng, Pohan Peter Wang, Chi Zhang, Patrick Mercier, Dinesh Bharadia
Improving the Range of WiFi Backscatter Via a Passive Retro-Reflective Single-Side-Band-Modulating MIMO Array and Non-Absorbing Termination [Slides]
Miao Meng, Manideep Dunna, Hans Yu, Shikhai Kuo, Pohan Peter Wang, Dinesh Bharadia, Patrick Mercier
A Low-Power Backscatter Modulation System Communicating Across Tens of Meters With Standards-Compliant Wi-Fi Transceivers
Po-Han Peter Wang, Chi Zhang, Hongsen Yang, Manideep Dunna, Dinesh Bharadia, Patrick Mercier
FreeRider: Backscatter Communication Using Commodity Radios [Slides]
Pengyu Zhang, Colleen Josephson, Dinesh Bharadia, Sachin Katti
HitchHike: Practical Backscatter using Commodity WiFi [Talk]
Pengyu Zhang (Co-primary), Dinesh Bharadia (Co-primary), Kiran Joshi, Sachin Katti
Best Paper Award Nominee
Press cover: Stanford News, ACM TechNews, ECN, Science Blog, Pace Today, North Dallas Gazette, New Electronics, RFID Journal, NFC World, etc.