31 citations · 91 across the 20 of their papers we have counts for
20 papers
Channel Gains to Captions: Task-Unified Multi-Level RF Sensing with Vision-Language Models
Tianyu Hu, Zhiren Gong, Haowei Cui +6
This letter investigates a task-unified multi-level radio-frequency (RF) sensing framework driven by vision-language models (VLMs). Existing RF sensing methods rely on task-specifi…
Near-Field Wideband Channel Estimation for Extremely Large-Scale RIS-Aided Communication Systems
Lanqing Zhi, Hongwei Wang, Lingxiang Li +1
This paper studies wideband channel estimation for OFDM systems assisted by extremely large RIS (XL-RIS). Due to the large aperture of XL-RISs, the user equipment may operate in th…
Near-Field Channel Estimation for mmWave/THz Communications with Extremely Large-Scale UPAs
Yiming Chen, Hongwei Wang, Lingxiang Li +1
Extremely large antenna arrays (ELAAs) are widely adopted in mmWave/THz communications to compensate for the severe path loss, wherein the channel estimation remains a significant…
Compressive Near-Field Wideband Channel Estimation for THz Extremely Large-scale MIMO Systems
Jionghui Wang, Hongwei Wang, Jun Fang +2
We consider the channel acquisition problem for a wideband terahertz (THz) communication system, where an extremely large-scale array is deployed to mitigate severe path attenuatio…
Advancing THz Radio Map Construction and Obstacle Sensing: An Integrated Generative Framework in ISAC
Tianyu Hu, Shuai Wang, Yunhang Xie +7
Integrated sensing and communication (ISAC) in the terahertz (THz) band enables obstacle detection, which in turn facilitates efficient beam management to mitigate THz signal block…
Towards THz-based Obstacle Sensing: A Generative Radio Environment Awareness Framework
Tianyu Hu, Yunhang Xie, Shuai Wang +3
Obstacle sensing is essential for terahertz (THz) communication since the subsequent beam management can avoid THz signals blocked by the obstacles. In parallel, radio environment,…
Near/Far-Field Channel Estimation For Terahertz Systems With ELAAs: A Block-Sparse-Aware Approach
Hongwei Wang, Jun Fang, Huiping Duan +1
Millimeter wave/Terahertz (mmWave/THz) communication with extremely large-scale antenna arrays (ELAAs) offers a promising solution to meet the escalating demand for high data rates…
Wireless Edge Content Broadcast via Integrated Terrestrial and Non-terrestrial Networks
Feng Wang, Giovanni Geraci, Lingxiang Li +2
Non-terrestrial networks (NTN) have emerged as a transformative solution to bridge the digital divide and deliver essential services to remote and underserved areas. In this contex…
ISAC-Enabled Beam Alignment for Terahertz Networks: Scheme Design and Coverage Analysis
Wenrong Chen, Lingxiang Li, Zhi Chen +3
As a key pillar technology for the future 6G networks, Terahertz (THz) communications can provide high-capacity transmissions, but suffers from severe propagation loss and line-of-…
An Analytical Range-Angle Dependent Beam Focusing Model for Terahertz Linear Antenna Array
Lingxiang Li, Haoran Li, Zhi Chen +2
This paper considers a scenario in which the Terahertz (THz) transmitter equipped with a linear antenna array wishes to focus its beam to a desired spatial region in the array near…
Improving THz Coverage for 6G URLLC Services via Exploiting Mobile Computing
Sha Xie, Lingxiang Li, Zhi Chen +1
Terahertz (THz) communication (0.1-10 THz) is regarded as a promising technology, which provides rich available bandwidth and high data rate of terahertz bit per second (Tbps). How…
Let's Share VMs: Optimal Placement and Pricing across Base Stations in MEC Systems
Marie Siew, Kun Guo, Desmond Cai +2
In mobile edge computing (MEC) systems, users offload computationally intensive tasks to edge servers at base stations. However, with unequal demand across the network, there might…
Optimal Pricing for Job Offloading in the MEC System with Two Priority Classes
Lingxiang Li, Marie Siew, Tony Q. S. Quek +1
Multi-Access edge computing (MEC) is an emerging paradigm where users offload computationally intensive jobs to the Access Point (AP). Given that the AP's resources are shared by s…
An Incentive-Aware Job Offloading Control Framework for Mobile Edge Computing
Lingxiang Li, Tony Q. S. Quek, Ju Ren +3
This paper considers a scenario in which an access point (AP) is equipped with a mobile edge server of finite computing power, and serves multiple resource-hungry mobile users by c…
MIMO Secret Communications Against an Active Eavesdropper
Lingxiang Li, Athina P. Petropulu, Zhi Chen
This paper considers a scenario in which an Alice-Bob pair wishes to communicate in secret in the presence of an active Eve, who is capable of jamming as well as eavesdropping in F…
Transmit design for MIMO wiretap channel with a malicious jammer
Duo Zhang, Weidong Mei, Lingxiang Li +1
In this paper, we consider the transmit design for multi-input multi-output (MIMO) wiretap channel including a malicious jammer. We first transform the system model into the tradit…
Linear Precoder Design for a MIMO Gaussian Wiretap Channel with Full-Duplex Source and Destination Nodes
Lingxiang Li, Zhi Chen, A. P. Petropulu +1
We consider linear precoder design for a multiple-input multiple-output (MIMO) Gaussian wiretap channel, which comprises two legitimate nodes, i.e., Alice and Bob, operating in Ful…
On Artificial-Noise Aided Transmit Design for Multi-User MISO Systems with Integrated Services
Weidong Mei, Zhi Chen, Lingxiang Li +2
This paper considers artificial noise (AN)-aided transmit designs for multi-user MISO systems in the eyes of service integration. Specifically, we combine two sorts of services, an…
Improving Wireless Physical Layer Security via Exploiting Co-Channel Interference
Lingxiang Li, Athina P. Petropulu, Zhi Chen +1
This paper considers a scenario in which a source-destination pair needs to establish a confidential connection against an external eavesdropper, aided by the interference generate…
On the Secrecy Capacity of a MIMO Gaussian Wiretap Channel with a Cooperative Jammer
Lingxiang Li, Zhi Chen, Jun Fang +1
We study the secrecy capacity of a helper-assisted Gaussian wiretap channel with a source, a legitimate receiver, an eavesdropper and an external helper, where each terminal is equ…