25 citations · 25 across the 5 of their papers we have counts for
6 papers · 1 filter
Channel Estimation for Intelligent Reflecting Surface Assisted Backscatter Communication
Samith Abeywickrama, Changsheng You, Rui Zhang +1
Intelligent reflecting surface (IRS) is a promising technology to improve the performance of backscatter communication systems by smartly reconfiguring the multi-reflection channel…
Refined Nonlinear Rectenna Modeling and Optimal Waveform Design for Multi-User Multi-Antenna Wireless Power Transfer
Samith Abeywickrama, Rui Zhang, Chau Yuen
In this paper, we study the optimal waveform design for wireless power transfer (WPT) from a multi-antenna energy transmitter (ET) to multiple single-antenna energy receivers (ERs)…
Intelligent Reflecting Surface: Practical Phase Shift Model and Beamforming Optimization
Samith Abeywickrama, Rui Zhang, Qingqing Wu +1
Intelligent reflecting surface (IRS) that enables the control of wireless propagation environment has recently emerged as a promising cost-effective technology for boosting the spe…
Opportunistic Wireless Energy Beamforming using RSSI Feedback
Samith Abeywickrama
This paper proposes a novel channel estimation method, and a cluster-based opportunistic scheduling policy, that enhances the efficiency of wireless energy transfer in a system con…
Cluster-based Wireless Energy Transfer for Low Complex Energy Receivers
Samith Abeywickrama, Tharaka Samarasinghe, Chau Yuen +1
This paper proposes a novel channel estimation method and a cluster-based opportunistic scheduling policy, for a wireless energy transfer (WET) system consisting of multiple low-co…
Wireless Energy Transfer to a Pair of Energy Receivers using Signal Strength Feedback
Chanaka Singhabahu, Tharaka Samarasinghe, Samith Abeywickrama +1
This paper focuses on wireless energy transfer (WET) to a pair of low complex energy receivers (ER), by only utilizing received signal strength indicator (RSSI) values that are fed…