4 papers
PHY Authentication for Ambient IoTs in Near-Field XL-MIMO Backscatter Communication Systems
Fikiri Salum Uledi, Hafsa Ahmad, Muhammad Bilal Janjua +2
This letter exploits near-field (NF) spherical wavefronts to derive geometry-dependent physical signatures for backscatter device (BD) authentication in extremely large-scale multi…
Scalable Multi-BD Access for OFDM-Based Symbiotic Backscatter Communications
Fikiri Salum Uledi, Muhammad Bilal Janjua, Muhammad Sohaib J. Solaija +2
We propose an interference-free multi-backscatter device (BD) access scheme for orthogonal frequency division multiplexing (OFDM)-based symbiotic backscatter communication (SBC). S…
Chirp-Based Multi-Device Ambient Backscatter Communication and Sensing Enabled by OFDM-AFDM Symbiotic Radio
Katia Abtouche, Fikiri Salum Uledi, Ayoub Ammar Boudjelal +4
This paper presents a novel symbiotic radio system for integrated sensing and backscatter communication (ISABC) technique that enables signal-domain interference-free coexistence o…
Interference Mitigation and Spectral Efficiency Enhancement in a Multi-BD Symbiotic Radio
Fikiri Salum Uledi, Muhammad Bilal Janjua, Çagrı Özgenç Etemoglu +1
This study presents a framework designed to mitigate direct-link interference (DLI) and inter-backscatter device interference (IBDI) in multi-backscatter orthogonal frequency divis…