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Enhancing IoT Communication and Localization via Smarter Antenna Open
The convergence of sensing and communication functionalities is poised to become a pivotal feature of the sixth-generation (6G) wireless networks. This vision represents a paradigm shift in wireless network design, moving beyond mere commu…
Enabling On-Demand Low-Power mmWave Repeaters via Passive Beamforming Open
Advancements in computing have enabled emerging applications such as telesurgery, robot automation, holographic telepresence, and extended reality, which require gigabitper-second throughput, sub-millisecond latency, and highly reliable wi…
NeWRF: A Deep Learning Framework for Wireless Radiation Field Reconstruction and Channel Prediction Open
We present NeWRF, a deep learning framework for predicting wireless channels. Wireless channel prediction is a long-standing problem in the wireless community and is a key technology for improving the coverage of wireless network deploymen…
Can IoT Devices be Powered up by Future Indoor Wireless Networks? Open
The number of wireless access points (such as WiFi and 5G) is rapidly growing in indoor environments. In this paper, we ask whether these indoor wireless access points can transfer power to IoT devices besides their communication capabilit…
Bringing Millimeter Wave Technology to Any IoT Device Open
With the advancement of the Internet of Things (IoT), many devices will be connected to the Internet, enabling digital twin and smart home applications. However, currently, these IoT devices are operating at lower frequency bands of the wi…
A Millimeter Wave Backscatter Network for Two-Way Communication and Localization Open
Millimeter wave (mmWave) technology enables wireless devices to communicate using very high-frequency signals. Operating at those frequencies provides larger bandwidth which can be used to enable high-data-rate links, and very accurate loc…
Everything has its Bad Side and Good Side: Turning Processors to Low Overhead Radios Using Side-Channels Open
Side-channels have traditionally been exploited as a means of uncovering sensitive information such as cryptographic keys from a computing device. In particular, past work has shown that electromagnetic (EM) radiation from a device's proce…
Are Home Security Systems Reliable? Open
Home security systems have become increasingly popular since they provide an additional layer of protection and peace of mind. These systems typically include battery-powered motion sensors, contact sensors, and smart locks. Z-Wave is a ve…
WiFi Physical Layer Stays Awake and Responds When it Should Not Open
WiFi communication should be possible only between devices inside the same network. However, we find that all existing WiFi devices send back acknowledgments (ACK) to even fake packets received from unauthorized WiFi devices outside of the…
Bringing wifi localization to any wifi devices Open
Recent years have seen significant advances in WiFi Localization. However, existing systems require either multiple access points to cooperate with each other or a single access point to have multiple antennas and transceiver chains. There…
mmWall: A Transflective Metamaterial Surface for mmWave Networks Open
Mobile operators are poised to leverage millimeter wave technology as 5G evolves, but despite efforts to bolster their reliability indoors and outdoors, mmWave links remain vulnerable to blockage by walls, people, and obstacles. Further, t…
View article: Tip-Tap
Tip-Tap Open
We describe Tip-Tap, a wearable input technique that can be implemented without batteries using a custom RFID tag. It recognizes 2-dimensional discrete touch events by sensing the intersection between two arrays of contact points: one arra…
In-body backscatter communication and localization Open
Backscatter requires zero transmission power, making it a compelling technology for in-body communication and localization. It can significantly reduce the battery requirements (and hence the size) of micro-implants and smart capsules, and…
Fast millimeter wave beam alignment Open
SENS
Agile Millimeter Wave Networks with Provable Guarantees Open
There is much interest in integrating millimeter wave radios (mmWave) into wireless LANs and 5G cellular networks to benefit from their multiple GHz of available spectrum. Yet unlike existing technologies, e.g., WiFi, mmWave radios require…
Over-the-air Function Computation in Sensor Networks Open
Many sensor applications are interested in computing a function over measurements (e.g., sum, average, max) as opposed to collecting all sensor data. Today, such data aggregation is done in a cluster-head. Sensor nodes transmit their value…