3 papers
cs.IT2026
Perfectly Covert Communication Assisted by an Intelligent Reflecting Surface
Or Elimelech, Asaf Cohen
This work investigates perfectly covert communication assisted by a passive Intelligent Reflecting Surface (IRS). In contrast to most existing IRS-assisted covert communication stu…
cs.IT2025
On PIR and SPIR Over Gaussian MAC
Or Elimelech, Asaf Cohen
This paper revisits the problems of Private Information Retrieval (PIR) and Symmetric PIR (SPIR). In PIR, a user retrieves a desired message from replicated, non-communicating…
cs.IT2025
PIR Over Wireless Channels: Achieving Privacy With Public Responses
Or Elimelech, Asaf Cohen
In this paper, we address the problem of Private Information Retrieval (PIR) over a public Additive White Gaussian Noise (AWGN) channel. In such a setup, the server's responses are…