Communications in Information and Systems
Volume 20 (2020)
Mathematical Engineering: A special issue at the occasion of the 85th birthday of Prof. Thomas Kailath
Guest Editors: Ali H. Sayed, Helmut Bölcskei, Patrick Dewilde, Vwani Roychowdhury, and Stephen Shing-Toung Yau
An approach to physical layer security in MIMO wireless via vector perturbation precoding
Pages: 117 – 129
In this paper, we investigate the application of vector perturbation (VP) precoding for physical layer security. We propose the notion of practical secrecy leakage to measure the performance of practical secrecy schemes which aims to maximize eavesdropper’s error probability. We show that practical secrecy leakage can be avoided with modified VP scheme under specified restrictions of perturbation vector. A new sphere decoder is developed to satisfy these limitations with a cost of legitimate receiver’s error performance. We show that the proposed scheme can avoid practical secrecy leakage although the number of receiver’s antenna is small while obtaining a better performance at the legitimate receiver compared with artificial noise based schemes.
This paper is supported by National Key Research and Development Plan under grant 2018YFE0205501.
Received 2 February 2020
Published 19 November 2020