6 papers · 1 filter
CSI Reconstruction in Fluid Antenna Systems Without Spatial Covariance Priors
Zhentian Zhang, Kaitao Meng, Tuo Wu +6
Fluid antenna systems (FASs) exploit many candidate ports for spatial diversity, but hardware constraints allow channel observations at only a few active ports. Whether full-port C…
Fundamental Tradeoffs for ISAC Multiple Access in Finite-Blocklength Regime
Zhentian Zhang, Christos Masouros, Kai-Kit Wong +5
This paper investigates the fundamental communication--sensing tradeoffs of uplink dual-functional integrated sensing and communication (ISAC) multiple access under finite blocklen…
Achievable Rates for a Distributed Antenna System with No Channel State Information at the Central Processor
Yi Song, Hao Xu, Kai Wan +3
A recent trend in wireless communications considers the migration of traditional monolithic base stations to the so-called disaggregated architecture, where radio units (RUs) imple…
Sparse Code Transceiver Design for Unsourced Random Access with Analytical Power Division in Gaussian MAC
Zhentian Zhang, Mohammad Javad Ahmadi, Jian Dang +3
In this work, we discuss the problem of unsourced random access (URA) over a Gaussian multiple access channel (GMAC). To address the challenges posed by emerging massive machine-ty…
Integrated Sensing and Communications for Unsourced Random Access: A Spectrum Sharing Compressive Sensing Approach
Zhentian Zhang, Jian Dang, Kai-Kit Wong +2
This paper addresses the unsourced/uncoordinated random access problem in an integrated sensing and communications (ISAC) system, with a focus on uplink multiple access code design…
A New Achievable Region of the -User MAC Wiretap Channel with Confidential and Open Messages Under Strong Secrecy
Hao Xu, Kai-Kit Wong, Giuseppe Caire
This paper investigates the achievable region of a -user discrete memoryless (DM) multiple access wiretap (MAC-WT) channel, where each user transmits both secret and open messag…