Fundamental limitations on repeater jamming of frequency-hopping communications

Abstract

Fundamental limitations on the effectiveness of repeater jamming are derived. These limitations arise because of the geometry and the need for frequency estimation and signal sorting. Limitations on the hopping rate, which might be increased to counter a repeater-jamming threat, are derived from consideration of practical requirements.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>