7 papers
Beamforming and RIS-Aided Ambient Backscatter Communications with Residual-Feature SVM Detection
Aobakwe Makgarapa, Burhan Wafai, Sangarapillai Lambotharan +1
Ambient backscatter communication (AmBC) enables battery-free connectivity by modulating data onto existing radio-frequency (RF) signals, eliminating the need for dedicated power s…
Secrecy Analysis of CSI Ratio-Based Transmitter Selection with Unreliable Backhaul
Burhan Wafai, Ankit Dubey, Chinmoy Kundu
This paper explores the secrecy performance of a multi-transmitter system with unreliable backhaul links. To improve secrecy, we propose a novel transmitter selection (TS) scheme t…
Opportunistic User Scheduling for Secure RIS-aided Wireless Communications
Burhan Wafai, Sarbani Ghose, Chinmoy Kundu +2
In this paper, we provide expressions for the secrecy outage probability (SOP) for suboptimal and optimal opportunistic scheduling schemes in a reconfigurable intelligent surface (…
Secrecy of Opportunistic User Scheduling in RIS-Aided Systems: A Comparison with NOMA Scheduling
Burhan Wafai, Sarbani Ghose, Chinmoy Kundu +2
In this paper, we propose an opportunistic user scheduling scheme in a multi-user reconfigurable intelligent surface (RIS) aided wireless system to improve secrecy. We derive the s…
Transmitter Selection for Secrecy Against Colluding Eavesdroppers with Backhaul Uncertainty
Burhan Wafai, Ankit Dubey, Chinmoy Kundu
Due to the exponential growth of interconnected devices and reduced cell coverage, beyond fifth-generation networks will be dense. Thus, instead of wired backhaul, wireless backhau…
Optimal Friendly Jamming and Transmit Power Allocation in RIS-assisted Secure Communication
Burhan Wafai, Chinmoy Kundu, Ankit Dubey +1
This paper analyzes the secrecy performance of a reconfigurable intelligent surface (RIS) assisted wireless communication system with a friendly jammer in the presence of an eavesd…
Transmitter Selection for Secrecy in Cognitive Small-Cell Networks with Backhaul Knowledge
Burhan Wafai, Chinmoy Kundu, Ankit Dubey +2
A small-cell network with multiple transmitters and unreliable wireless backhaul is considered for secrecy enhancement. The small-cell network is operating under a spectrum sharing…