Integrated Radar Jamming Signal Generation and Secure Wireless Communication Based on Photonics at <i>Ka</i>-Band

Abstract

In this article, we propose a novel photonic-based integrated scheme that simultaneously achieves radar jamming signal generation and chaotic encrypted wireless communication. The velocity deception jamming signals are generated with a high spurious suppression ratio of 31.9–33.2 dB. Additionally, the range deception jamming has been efficiently executed. Simultaneously, an encrypted 64-quadrature amplitude modulation (64QAM) OFDM signal with a key space of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$10^{50}$ </tex-math></inline-formula> is transmitted over a 1.5-m wireless link, meeting the hard decision forward error correction (HD-FEC) threshold of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$3.8\times 10^{-3}$ </tex-math></inline-formula>, corresponding to a net rate of 9.9 Gbit/s. In addition, a maximum modulation error ratio (MER) of 21.4 dB is achieved below the error vector magnitude (EVM) threshold of 9%. The proposed scheme effectively combines the capabilities of degrading enemy radar detection and enhancing one’s wireless communication security, which may be a potential application for electronic countermeasures in the future.