Compressive narrowband interference detection for wideband cognitive HF front-ends

Abstract

An adaptive interference detector based on compressive sensing is introduced in this paper. The proposed detector is part of a narrowband interference mitigation system for wideband cognitive HF front-ends that self-adapts its configuration hinging on the behaviour of the automatic gain control. The use of a compressive sensing architecture allows us to significantly reduce the cost of the additional hardware required to perform the detection of harmful narrowband interfering signals. The proposed detector has been verified with real wideband HF signals and the results show that the adopted approach is a suitable alternative to detect a number of narrowband interfering signals without prior knowledge of their frequency location.