Mode Hopping for Anti-Jamming in Radio Vortex Wireless Communications

TL;DR

This paper introduces mode hopping and mode-frequency hopping schemes utilizing orbital angular momentum modes for anti-jamming in wireless communications, achieving comparable or better BER performance within narrower bandwidths compared to traditional frequency hopping.

Contribution

It proposes novel mode hopping and mode-frequency hopping schemes based on OAM modes, enhancing anti-jamming efficiency within narrow frequency bands.

Findings

Mode hopping achieves similar BER to wideband FH within narrow bands.

Mode-frequency hopping significantly reduces BER compared to conventional FH.

The schemes leverage OAM mode orthogonality for effective anti-jamming.

Abstract

Frequency hopping (FH) has been widely used as a powerful technique for antijamming in wireless communications. However, as the wireless spectrum is becoming more and more crowded, it is very difficult to achieve efficient antijamming results with FH-based schemes. Orbital angular momentum (OAM), which provides the new angular/mode dimension for wireless communications, offers an intriguing way for antijamming. In this paper, we propose to use the orthogonality of OAM-modes for antijamming in wireless communications. In particular, we propose the mode hopping (MH) scheme for antijamming within the narrow frequency band. We derive the closed-form expression of bit error rate (BER) for multiple users scenario with our developed MH scheme. Our developed MH scheme can achieve the same antijamming results within the narrow frequency band as compared with the conventional wideband FH scheme. Furthermore, we propose mode-frequency hopping (MFH) scheme, which jointly uses our developed MH scheme and the conventional FH scheme to further decrease the BER for wireless communication. Numerical results are presented to show that the BER of our developed MH scheme within the narrow frequency band is the same with that of the conventional wideband FH scheme. Moreover, the BER of our developed MFH schemes is much smaller than that of the conventional FH schemes for wireless communications.