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SDR Testbed of Full-Duplex Jamming for Secrecy

Silva, A. H. ; Gomes, M. ; Vilela, J. ; Harrison, W. K. Harrison

SDR Testbed of Full-Duplex Jamming for Secrecy, Proc IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing - CSNDSP, Porto, Portugal, Vol. , pp. - , July, 2020.

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Abstract
In order to secure wireless communications, we consider the usage of physical-layer security (PLS) mechanisms (i.e. coding for secrecy mechanisms) combined with self-interference generation. We present a prototype implementation of a scrambled coding for secrecy mechanism with interference generation by the legitimate receiver and the cancellation of the effect of self-interference (SI). Regarding the SI cancellation, two algorithms were evaluated: least mean square and recursive least squares. The prototype implementation is performed in real-world software-defined radio (SDR) devices using GNU-Radio.