275 citations · 579 across the 20 of their papers we have counts for
12 papers · 1 filter
BEH: Indoor Batteryless BLE Beacons using RF Energy Harvesting for Internet of Things
Qingzhi Liu, Wieger IJntema, Anass Drif +2
Indoor beacon system is a cornerstone of internet of things. Until now, most of the research effort has focused on achieving various applications based on beacon communication. How…
WiPLoc: Perpetual Indoor Localization with RF Wireless Power Transfer
Qingzhi Liu, Wieger IJntema, Anass Drif +2
Indoor localization is a cornerstone of mobile services. Until now most of the research effort has focused on achieving sub-meter localization accuracy because many mobile applicat…
On the Synchronization of Intermittently Powered Wireless Embedded Systems
Kasım Sinan Yıldırım, Henko Aantjes, Amjad Yousef Majid +1
Battery-free computational RFID platforms, such as WISP (Wireless Identification and Sensing Platform), are emerging intermittently powered devices designed for replacing existing…
BLISP: Enhancing Backscatter Radio with Active Radio for Computational RFIDs
Ivar in 't Veen, Qingzhi Liu, Przemysław Pawełczak +2
We demonstrate the world's first hybrid radio platform which combines the strengths of active radio (long range and robustness to interference) and Computational RFIDs (low power c…
Safe and Secure Wireless Power Transfer Networks: Challenges and Opportunities in RF-Based Systems
Qingzhi Liu, Kasım Sinan Yıldırım, Przemysław Pawełczak +1
RF-based wireless power transfer networks (WPTNs) are deployed to transfer power to embedded devices over the air via RF waves. Up until now, a considerable amount of effort has be…
Wisent: Robust Downstream Communication and Storage for Computational RFIDs
Jethro Tan, Przemysław Pawełczak, Aaron Parks +1
Computational RFID (CRFID) devices are emerging platforms that can enable perennial computation and sensing by eliminating the need for batteries. Although much research has been d…
Green Wireless Power Transfer Networks
Qingzhi Liu, Michał Goliński, Przemysław Pawełczak +1
A Wireless Power Transfer Network (WPTN) aims to support devices with cable-less energy on-demand. Unfortunately, wireless power transfer itself-especially through radio frequency…
When Channel Bonding is Beneficial for Opportunistic Spectrum Access Networks
Shaunak Joshi, Przemysław Pawełczak, Danijela Čabrić +1
Transmission over multiple frequency bands combined into one logical channel speeds up data transfer for wireless networks. On the other hand, the allocation of multiple channels t…
Primary User Traffic Estimation for Dynamic Spectrum Access
Wesam Gabran, Chun-Hao Liu, Przemysław Pawełczak +1
Accurate estimation of licensed channel Primary User's (PU) temporal statistics is important for Dynamic Spectrum Access (DSA) systems. With accurate estimation of the mean duty cy…
Analysis Framework for Opportunistic Spectrum OFDMA and its Application to the IEEE 802.22 Standard
Jihoon Park, Przemysław Pawełczak, Pål Grønsund +1
We present an analytical model that enables throughput evaluation of Opportunistic Spectrum Orthogonal Frequency Division Multiple Access (OS-OFDMA) networks. The core feature of t…
Performance of Joint Spectrum Sensing and MAC Algorithms for Multichannel Opportunistic Spectrum Access Ad Hoc Networks
Jihoon Park, Przemysław Pawełczak, Danijela Čabrić
We present an analytical framework to assess the link layer throughput of multichannel Opportunistic Spectrum Access (OSA) ad hoc networks. Specifically, we focus on analyzing vari…
Practical Rate and Route Adaptation with Efficient Link Quality Estimation for IEEE 802.11b/g Multi-Hop Networks
Jinglong Zhou, Vijay S. Rao, Przemysław Pawełczak +2
Accurate and fast packet delivery rate (PDR) estimation, used in evaluating wireless link quality, is a prerequisite to increase the performance of mobile, multi-hop and multi-rate…