7 papers
Secret-key-based physical layer security for feedback-aided unsourced random access
Mohammad Javad Ahmadi, Rafael F. Schaefer, F. Rostami Ghadi +1
This work introduces security for unsourced random access (URA) via a physical-layer security approach. To achieve confidentiality, the proposed system opportunistically exploits i…
MAP-Based Task-Oriented Precoding for Multiuser Communication
Mohammad Javad Ahmadi, Rafael F. Schaefer, H. Vincent Poor
We propose a task-oriented multiuser wireless communication framework for distributed classification based on a MAP-driven system design under wireless channel impairments. By deri…
Integrated Sensing and Communications for Unsourced Random Access: Fundamental Limits
Mohammad Javad Ahmadi, Rafael F. Schaefer, H. Vincent Poor
This work considers the problem of integrated sensing and communications (ISAC) with a massive number of unsourced and uncoordinated users. In the proposed model, known as the unso…
Enormous Fluid Antenna Systems (E-FAS) under Correlated Surface-Wave Leakage: Physical Layer Security
Farshad Rostami Ghadi, Kai-Kit Wong, Masoud Kaveh +3
Enormous fluid antenna systems (E-FAS) have recently emerged as a surface-wave (SW)-enabled architecture that can induce controllable large-scale channel gains through guided elect…
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…
Efficient Feedback Design for Unsourced Random Access with Integrated Sensing and Communication
Mohammad Javad Ahmadi, Mohammad Kazemi, Rafael F. Schaefer
We consider an unsourced random access (URA) system enhanced with a feedback mechanism that serves both communication and sensing tasks. While traditional URA systems do not incorp…