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Stacked intelligent metasurfaces (SIMs) and fluid antenna systems (FAS) are emerging technologies for wave-domain and spatial signal manipulation, respectively.This letter proposes a novel joint SIM-FAS communication model in which…

Information Theory · Computer Science 2026-05-22 Anastasios Papazafeiropoulos

Deploying Large Language Models (LLMs) on edge or mobile devices offers significant benefits, such as enhanced data privacy and real-time processing capabilities. However, it also faces critical challenges due to the substantial memory…

Machine Learning · Computer Science 2024-05-07 Yu Mao , Weilan Wang , Hongchao Du , Nan Guan , Chun Jason Xue

With the development of the upcoming sixth-generation (6G) wireless networks, there is a pressing need for innovative technologies capable of satisfying heightened performance indicators. Fluid antenna system (FAS) is proposed recently as a…

Signal Processing · Electrical Eng. & Systems 2026-01-12 Yuqi Ye , Li You , Hao Xu , Ahmed Elzanaty , Kai-Kit Wong , Xiqi Gao

Over the past decades, multiple antenna technologies have appeared in many different forms, most notably as multiple-input multiple-output (MIMO), to transform wireless communications for extraordinary diversity and multiplexing gains. The…

Information Theory · Computer Science 2020-05-26 Kai-Kit Wong , Arman Shojaeifard , Kin-Fai Tong , Yangyang Zhang

Fluid antenna system (FAS) is emerging as a key technology for enhancing spatial flexibility and sensing accuracy in future wireless systems. This paper investigates an unmanned aerial vehicle (UAV)-enabled FAS for multi-target wireless…

Information Theory · Computer Science 2025-09-29 Xuhui Zhang , Wenchao Liu , Chunjie Wang , Jinke Ren , Huijun Xing , Shuqiang Wang , Yanyan Shen

The integrated sensing and communication (ISAC) technology has been extensively researched to enhance communication rates and radar sensing capabilities. Additionally, a new technology known as fluid antenna system (FAS) has recently been…

Information Theory · Computer Science 2025-11-14 Yuqi Ye , Li You , Hao Xu , Ahmed Elzanaty , Kai-Kit Wong , Xiqi Gao

Fine-tuning is the process of adapting the pre-trained large language models (LLMs) for downstream tasks. Due to substantial parameters, fine-tuning LLMs on mobile devices demands considerable memory resources, and suffers from high…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-01-17 Songge Zhang , Guoliang Cheng , Xinyu Huang , Zuguang Li , Wen Wu , Lingyang Song , Xuemin Shen

The integration of wireless communications and Large Language Models (LLMs) is poised to unlock ubiquitous intelligent services, yet deploying them in wireless edge-device collaborative environments presents a critical trade-off between…

Information Theory · Computer Science 2025-08-18 Rui Bao , Nan Xue , Yaping Sun , Zhiyong Chen

Fluid antenna is a novel technology that can make an antenna appear instantly at one of N preset locations in a predefined space. An important application is to adopt fluid antenna in a small space of mobile device for obtaining the…

Information Theory · Computer Science 2020-06-11 Kai-Kit Wong , Kin-Fai Tong

The large number of parameters in Pretrained Language Models enhance their performance, but also make them resource-intensive, making it challenging to deploy them on commodity hardware like a single GPU. Due to the memory and power…

Computation and Language · Computer Science 2024-01-09 Zirui Liu , Qingquan Song , Qiang Charles Xiao , Sathiya Keerthi Selvaraj , Rahul Mazumder , Aman Gupta , Xia Hu

Index modulation (IM) significantly enhances the spectral efficiency of fluid antennas (FAs) enabled multiple-input multiple-output (MIMO) systems, which is named FA-IM. However, due to the dense distribution of ports on the FA, the…

Information Theory · Computer Science 2024-08-20 Xinghao Guo , Yin Xu , Dazhi He , Cixiao Zhang , Wenjun Zhang , Yi-yan Wu

Large Language Models (LLMs) have advanced rapidly but face significant memory demands. While quantization has shown promise for LLMs, current methods typically require lengthy training to alleviate the performance degradation from…

Artificial Intelligence · Computer Science 2024-05-31 Ke Yi , Yuhui Xu , Heng Chang , Chen Tang , Yuan Meng , Tong Zhang , Jia Li

The fluid antenna system (FAS) has emerged as a new physical-layer concept to provide enhanced propagation conditions for multiuser multiple-input multiple-output (MIMO) communications over conventional fixed arrays. This work focuses on…

Signal Processing · Electrical Eng. & Systems 2025-07-16 Wenxuan Sun , Mingjie Shao , Luteng Zhu , Yao Ge , Tong Zhang , Zhi Liu

Fluid antenna systems (FAS) have recently emerged as a promising technology for next-generation wireless networks, offering real-time spatial reconfiguration to enhance reliability, throughput, and energy efficiency. Nevertheless, existing…

Signal Processing · Electrical Eng. & Systems 2025-07-29 Irfan Muhammad , Priyadarshi Mukherjee , Wee Kiat New , Hirley Alves , Ioannis Krikidis , Kai-Kit Wong

In this paper, we investigate the problem of rate maximization in a fluid antenna system (FAS) assisted semantic communication system. In the considered model, a base station (BS) with multiple static antennas employs semantic extraction…

Signal Processing · Electrical Eng. & Systems 2025-07-01 Siyun Liang , Chen Zhu , Zhaohui Yang , Changsheng You , Dusit Niyato , Kai-Kit Wong , Zhaoyang Zhang

This paper considers improving wireless communication and computation efficiency in federated learning (FL) via model quantization. In the proposed bitwidth FL scheme, edge devices train and transmit quantized versions of their local FL…

Machine Learning · Computer Science 2023-07-12 Sihua Wang , Mingzhe Chen , Christopher G. Brinton , Changchuan Yin , Walid Saad , Shuguang Cui

The emerging millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) with lens antenna arrays, which is also known as "beamspace MIMO", can effectively reduce the required number of power-hungry radio frequency (RF) chains.…

Information Theory · Computer Science 2020-08-25 Tian Xie , Linglong Dai , Derrick Wing Kwan Ng , Chan-Byoung Chae

The next generation wireless systems will face stringent new requirements, including ultra-low latency, high data rates and enhanced reliability. Large Intelligent Surfaces, is one proposed solution that has the potential to solve these…

Signal Processing · Electrical Eng. & Systems 2025-10-16 Lina Tinnerberg , Dumitra Iancu , Ove Edfors , Liang Liu , Juan Vidal Alegría

Federated Learning (FL) with quantization and deliberately added noise over wireless networks is a promising approach to preserve user differential privacy (DP) while reducing wireless resources. Specifically, an FL process can be fused…

This paper investigates a two-timescale uplink transmission framework for a fluid antenna-enabled multiuser multi-input multi-output system (MIMO-FAS). Antenna positions are optimized based on statistical channel state information (CSI),…

Signal Processing · Electrical Eng. & Systems 2025-03-04 Linyue Hu , Luchu Li , Cunhua Pan , Hong Ren