Adaptive Resource Allocation for Joint Spectral and Secrecy Efficiency in RS Networks
Martins, J. M.
; Conceição, F.
;
Gomes, M.
;
Silva, V.
;
Dinis, R.
Adaptive Resource Allocation for Joint Spectral and Secrecy Efficiency in RS Networks, Proc IEEE Annual International Symposium on Personal Indoor and Mobile Radio Communications PIMRC, Instanbul, Turkey, Vol. , pp. - , September, 2025.
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Abstract
The radio stripe (RS) concept has emerged as a viable and practical implementation of the cell-free (CF) massive multiple-input-multiple-output (mMIMO) paradigm, where a sequence of distributed access points (APs) sharing a common stripe cooperatively serve user-equipments (UEs) over both uplink (UL) and downlink channels. In such networks, active eavesdroppers can launch pilot-spoofing attacks, fully informed of the legitimate pilot sequences and AP-selection scheme, to contaminate UL channel estimation (CE), thereby degrading overall throughput and leaking confidential data to the adversary. To counteract spoofing, we analyze a bi-objective AP-selection framework that jointly maximizes (1) the network sum spectral efficiency (SE) and (2) the secrecy spectral efficiency (SSE) of the attacked UEs. Our results trace the Pareto frontier of sum SE versus attacked UE SE, revealing the inherent trade-offs between throughput and security.
