Stealth Communication (SC) for 5G/6G Wireless to ensure spectral efficiency and privacy/cybersecurity

This paper presents a review on the state-of-the-art of 'Stealth Communication' (SC), focused on potential applications in 5G/6G. SC is a new wireless system aimed at enhancing spectral efficiency and cybersecurity/privacy based on employing Ultra-Wide-Band (UWB) RF signals that mimic noises in wave form and below-noise-level at the receiver frontend. For 5G/6G applications, Same Frequency (SF) Simultaneous Transmit and Receive (STAR) operating bandwidth covering 400 MHz to 11 GHz, and their Technology Readiness Level, are discussed. Implementation of SC in 5G/6G, held back so far by high costs and Covid-19, should be able to gain enough momentum under the thrusts of rising cyber attacks in 2021. © 2021 IEEE.