1.1k citations · 13.1k across the 301 of their papers we have counts for
28 papers · 2 filters
STAR-RISs: A Correlated T&R Phase-Shift Model and Practical Phase-Shift Configuration Strategies
Jiaqi Xu, Yuanwei Liu, Xidong Mu +2
A correlated transmission and reflection (T&R) phase-shift model is proposed for passive lossless simultaneously transmitting and reflecting reconfigurable intelligent surfaces (ST…
Is RIS-Aided Massive MIMO Promising with ZF Detectors and Imperfect CSI?
Kangda Zhi, Cunhua Pan, Gui Zhou +3
This paper provides a theoretical framework for understanding the performance of reconfigurable intelligent surface (RIS)-aided massive multiple-input multiple-output (MIMO) with z…
Area Rate Efficiency in Multi-Link Molecular Communications
Lukas Brand, Sebastian Lotter, Vahid Jamali +2
We consider a multi-link diffusion-based molecular communication (MC) system where multiple spatially distributed transmitter (TX)-receiver (RX) pairs establish point-to-point comm…
Resource Allocation for Simultaneous Wireless Information and Power Transfer Systems: A Tutorial Overview
Zhiqiang Wei, Xianghao Yu, Derrick Wing Kwan Ng +1
Over the last decade, simultaneous wireless information and power transfer (SWIPT) has become a practical and promising solution for connecting and recharging battery-limited devic…
Safeguarding UAV Networks Through Integrated Sensing, Jamming, and Communications
Zhiqiang Wei, Fan Liu, Derrick Wing Kwan Ng +1
This paper proposes an integrated sensing, jamming, and communications (ISJC) framework for securing unmanned aerial vehicle (UAV)-enabled wireless networks. The proposed framework…
Simultaneously Transmitting and Reflecting (STAR)-RISs: A Coupled Phase-Shift Model
Yuanwei Liu, Xidong Mu, Robert Schober +1
A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided communication system is investigated, where an access point sends information to tw…
Optimal Resource Allocation and Beamforming for Two-User MISO WPCNs for a Non-linear Circuit-Based EH Model
Nikita Shanin, Moritz Garkisch, Amelie Hagelauer +2
We study two-user multiple-input single-output (MISO) wireless powered communication networks (WPCNs), where the user devices are equipped with non-linear energy harvesting (EH) ci…
Optimal Power and Time Allocation for WPCNs with Piece-wise Linear EH Model
Slavche Pejoski, Zoran Hadzi-Velkov, Robert Schober
We propose a novel transmission protocol for harvest-then-transmit wireless powered communication networks, which takes into account the non-linearity of the energy harvesting (EH)…
Resource Allocation for Active IRS-Assisted Multiuser Communication Systems
Dongfang Xu, Xianghao Yu, Derrick Wing Kwan Ng +1
Intelligent reflecting surfaces (IRSs) are emerging as promising enablers for the next generation of wireless communication systems, because of their ability to customize favorable…
Two-Timescale Design for Reconfigurable Intelligent Surface-Aided Massive MIMO Systems with Imperfect CSI
Kangda Zhi, Cunhua Pan, Hong Ren +7
This paper investigates the two-timescale transmission design for reconfigurable intelligent surface (RIS)-aided massive multiple-input multiple-output (MIMO) systems, where the be…
Evolution of NOMA Toward Next Generation Multiple Access (NGMA) for 6G
Yuanwei Liu, Shuowen Zhang, Xidong Mu +5
Due to the explosive growth in the number of wireless devices and diverse wireless services, such as virtual/augmented reality and Internet-of-Everything, next generation wireless…
Channel Estimation for IRS-Assisted Millimeter-Wave MIMO Systems: Sparsity-Inspired Approaches
Tian Lin, Xianghao Yu, Yu Zhu +1
Due to their ability to create favorable line-of-sight (LoS) propagation environments, intelligent reflecting surfaces (IRSs) are regarded as promising enablers for future millimet…
Downlink MIMO-RSMA with Successive Null-Space Precoding
Aravindh Krishnamoorthy, Robert Schober
In this paper, we consider the precoder design for an underloaded or critically loaded downlink multi-user multiple-input multiple-output (MIMO) communication system. We propose no…
Deterministic Identification Over Poisson Channels
Mohammad J. Salariseddigh, Uzi Pereg, Holger Boche +2
Deterministic identification (DI) for the discrete-time Poisson channel, subject to an average and a peak power constraint, is considered. It is established that the code size scal…
Optimal Transmit Strategy for Multi-user MIMO WPT Systems With Non-linear Energy Harvesters
Nikita Shanin, Laura Cottatellucci, Robert Schober
In this paper, we study multi-user multi-antenna wireless power transfer (WPT) systems, where each antenna at the energy harvesting (EH) nodes is connected to a dedicated non-linea…
Area Rate Efficiency in Molecular Communications
Lukas Brand, Sebastian Lotter, Vahid Jamali +1
We consider a multiuser diffusion-based molecular communication (MC) system where multiple spatially distributed transmitter (TX)-receiver (RX) pairs establish point-to-point commu…
A Novel Wireless Communication Paradigm for Intelligent Reflecting Surface Based Symbiotic Radio Systems
Meng Hua, Qingqing Wu, Luxi Yang +2
This paper investigates a novel intelligent reflecting surface (IRS)-based symbiotic radio (SR) system architecture consisting of a transmitter, an IRS, and an information receiver…
Optimal Transmit Strategy for MIMO WPT Systems With Non-linear Energy Harvesting
Nikita Shanin, Laura Cottatellucci, Robert Schober
In this paper, we study multiple-input multiple-output (MIMO) wireless power transfer (WPT) systems, where the energy harvester (EH) node is equipped with multiple nonlinear recten…
No-Pain No-Gain: DRL Assisted Optimization in Energy-Constrained CR-NOMA Networks
Zhiguo Ding, Robert Schober, H. Vincent Poor
This paper applies machine learning to optimize the transmission policy of cognitive radio inspired non-orthogonal multiple access (CR-NOMA) networks, where time-division multiple…
Optimal Resource Allocation Design for Large IRS-Assisted SWIPT Systems: A Scalable Optimization Framework
Dongfang Xu, Vahid Jamali, Xianghao Yu +2
In this paper, we study the optimal resource allocation algorithm design for large intelligent reflecting surface (IRS)-assisted simultaneous wireless information and power transfe…
Simultaneously Transmitting And Reflecting (STAR) RIS Aided Wireless Communications
Xidong Mu, Yuanwei Liu, Li Guo +2
The novel concept of simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surfaces (RISs) is investigated, where the incident wireless signal is divided int…
Harvested Power Region of Two-user MISO WPT Systems With Non-linear EH Nodes
Nikita Shanin, Laura Cottatellucci, Robert Schober
In this paper, we determine the harvested power region of a two-user multiple-input single-output (MISO) wireless power transfer (WPT) system for a non-linear model of the rectenna…
STAR: Simultaneous Transmission And Reflection for 360° Coverage by Intelligent Surfaces
Yuanwei Liu, Xidong Mu, Jiaqi Xu +4
A novel simultaneously transmitting and reflecting (STAR) system design relying on reconfigurable intelligent surfaces (RISs) is conceived. First, an existing prototype is reviewed…
IRS-Assisted Wireless Powered NOMA: Do We Really Need Different Phase Shifts in DL and UL?
Qingqing Wu, Xiaobo Zhou, Robert Schober
Intelligent reflecting surface (IRS) is a promising technology to improve the performance of wireless powered communication networks (WPCNs) due to its capability to reconfigure si…