19 citations · 30 across the 22 of their papers we have counts for
22 papers
Fluid Antenna System-Enabled Mitigation of Asynchronous Reception in Cell-Free Massive MIMO Systems
Jun Qian, Zan Li, Junhui Rao +2
Practical distributed deployments inherently suffer from asynchronous signal arrivals, which exacerbate multi-user interference and degrade system performance, especially for coher…
Covariance-Aware Detection for Single-RF MIMO-OFDM Systems
Tianrui Qiao, Jun Qian, Ross Murch
We propose the use of a covariance-aware detection method for single-radio-frequency (RF) multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) sy…
Fluid Antenna System Meets Low-Resolution ADCs in Energy-Efficient Cell-Free Massive MIMO
Jun Qian, Ross Murch, Khaled B. Letaief
This paper proposes a novel fluid antenna system (FAS)-enabled architecture to improve energy efficiency (EE) without sacrificing capacity. Specifically, we integrate FAS into cell…
Diffusion Fluid Antenna Systems for Resilient ISAC
Noor Waqar, Kai-Kit Wong, Chan-Byoung Chae +1
Most existing integrated sensing and communication (ISAC) studies focus on enabling a base station (BS) to support sensing and communication over shared resources through advanced…
Fast Fluid Antenna Multiple Access
Noor Waqar, Kai-Kit Wong, Chan-Byoung Chae +1
Fast fluid antenna multiple access (FAMA) is an idea that promises to overcome severe interference in massive access scenarios by reconfiguring the antenna's position at the receiv…
Stochastic Geometry Analysis of Uplink CUMA-Enabled Cellular Networks
Chenguang Rao, Kai-Kit Wong, Xusheng Zhu +3
Uplink cellular networks are interference-dominated but interference channel state information (CSI) is rarely available at scale. The emerging fluid antenna system (FAS) concept,…
Beyond Covariance: Generative Spatial Correlation Modeling and Channel Interpolation for Fluid Antenna Systems
Zhentian Zhang, Hao Jiang, Kai-Kit Wong +2
Fluid antenna systems (FAS) enable unprecedented spatial diversity within a compact form factor by flexibly switching among high-density antenna ports. To activate this capability,…
Optimizing Antenna Coding for Pixel Antenna Empowered SISO-OFDM Systems
Tianrui Qiao, Shanpu Shen, Yijun Chen +1
This work investigates antenna coding optimization to enhance the channel capacity of single-input single-output orthogonal frequency division multiplexing (SISO-OFDM) systems empo…
Antenna Coding Optimization for Pixel Antenna Empowered MIMO Wireless Power Transfer
Yijun Chen, Shanpu Shen, Tianrui Qiao +3
We investigate antenna coding utilizing pixel antennas as a new degree of freedom for enhancing multiple-input multiple-output (MIMO) wireless power transfer (WPT) systems. The obj…
Channel Estimation and Passive Beamforming for Pixel-based Reconfigurable Intelligent Surfaces with Non-Separable State Response
Huayan Guo, Junhui Rao, Alex M. H. Wong +2
Pixel-based reconfigurable intelligent surfaces (RISs) employ a novel design to achieve high reflection gain at a lower hardware cost by eliminating the phase shifters used in trad…
Channel Estimation and Analog Precoding for Pixel-based Fluid-Antenna-Assisted Multiuser MIMO-OFDM Systems
Huayan Guo, Jichen Zhang, Junhui Rao +2
Pixel-based fluid antennas provide enhanced multiplexing gains and quicker radiation pattern switching than traditional designs. However, this innovation introduces challenges for…
Turbocharging Fluid Antenna Multiple Access
Noor Waqar, Kai-Kit Wong, Chan-Byoung Chae +1
We revisit the massive connectivity challenge by considering the case where no CSI is available at the BS and no precoding is used. In this situation, inter-user interference (IUI)…
Phase-mismatched STAR-RIS with FAS-assisted RSMA Users
Farshad Rostami Ghadi, Kai-Kit Wong, Masoud Kaveh +4
This paper considers communication between a base station (BS) to two users, each from one side of a simultaneously transmitting-reflecting reconfigurable intelligent surface (STAR…
A First Look at the Performance Enhancement Potential of Fluid Reconfigurable Intelligent Surface
Abdelhamid Salem, Kai-Kit Wong, George Alexandropoulos +2
The fluid antenna concept represents shape-flexible and position-flexible antenna technologies designed to enhance wireless communication applications. In this paper, we apply this…
Downlink OFDM-FAMA in 5G-NR Systems
Hanjiang Hong, Kai-Kit Wong, Hao Xu +5
Fluid antenna multiple access (FAMA), enabled by the fluid antenna system (FAS), offers a new and straightforward solution to massive connectivity. Previous results on FAMA were pr…
Antenna Coding Empowered by Pixel Antennas
Shanpu Shen, Kai-Kit Wong, Ross Murch
Pixel antennas, based on discretizing a continuous radiation surface into small elements called pixels, are a flexible reconfigurable antenna technology. By controlling the connect…
A Tutorial on Fluid Antenna System for 6G Networks: Encompassing Communication Theory, Optimization Methods and Hardware Designs
Wee Kiat New, Kai-Kit Wong, Hao Xu +9
The advent of the sixth-generation (6G) networks presents another round of revolution for the mobile communication landscape, promising an immersive experience, robust reliability,…
A Pixel-based Reconfigurable Antenna Design for Fluid Antenna Systems
Jichen Zhang, Junhui Rao, Zhaoyang Ming +5
Fluid Antenna Systems (FASs) have recently been proposed for enhancing the performance of wireless communication. Previous antenna designs to meet the requirements of FAS have been…
Channel Estimation and Reconstruction in Fluid Antenna System: Oversampling is Essential
Wee Kiat New, Kai-Kit Wong, Hao Xu +3
Fluid antenna system (FAS) has recently surfaced as a promising technology for the upcoming sixth generation (6G) wireless networks. Unlike traditional antenna system (TAS) with fi…
On Performance of RIS-Aided Fluid Antenna Systems
Farshad Rostami Ghadi, Kai-Kit Wong, Wee Kiat New +3
This letter studies the performance of reconfigurable intelligent surface (RIS)-aided communications for a fluid antenna system (FAS) enabled receiver. Specifically, a fixed single…
Channel Estimation for FAS-assisted Multiuser mmWave Systems
Hao Xu, Gui Zhou, Kai-Kit Wong +6
This letter investigates the challenge of channel estimation in a multiuser millimeter-wave (mmWave) time-division duplexing (TDD) system. In this system, the base station (BS) emp…
Capacity Maximization for FAS-assisted Multiple Access Channels
Hao Xu, Kai-Kit Wong, Wee Kiat New +6
This paper investigates a multiuser millimeter-wave (mmWave) uplink system in which each user is equipped with a multi-antenna fluid antenna system (FAS) while the base station (BS…