Abstract
Security considerations for upcoming sixth-generation (6G) wireless systems are an important aspect along with data rate and latency performance requirements. In this paper, we consider the robustness of 6G systems operating in the terahertz (THz) frequency regime against hostile jamming attacks at the physical layer. Four separate factors pertinent for 6G wireless and their implications for jamming resistance are studied individually: ultra-narrow antenna beamwidths with frequency-dependent radiation patterns, distance-dependent and frequency-selective THz path loss, random small-scale mobility, and cell-free massive multiple-input multiple-output (MIMO) transmission and reception. Subsequently, we suggest that 6G wireless systems will be the first jamming-proof radio access technology, i.e., they will be virtually impervious to conventional jamming attacks.
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