Probabilistic frequency‐hopping sequence with low probability of detection based on spectrum sensing. Issue 14 (27th September 2017)

• Record Type: Journal Article
• Authors: Ning, Ben; Li, Zan; Guan, Lei; Zhou, Fuhui
• Is Part Of: IET communications. Volume 11:Issue 14(2017)
• Page Start: 2147
• Page End: 2153
• Publication Date: 2017-09-27
• Subjects: computational complexity -- error statistics -- radiowave propagation -- wireless channels -- radio spectrum management -- signal detection -- probability -- frequency hop communication; probabilistic frequency hopping sequence -- spectrum sensing -- radio propagation -- LPD -- low probability of detection -- high data rates -- covert wireless communication -- transmission channels -- FH sequence -- coloured noise scenario -- probabilistic FHS -- computational complexity -- bit error rate; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2017.0072
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : Due to the broadcast nature of the radio propagation, requirements of high data rates and low probability of detection (LPD) form a well‐known trade‐off problem in covert wireless communication. Frequency hopping (FH) is a communication technology that is able to efficiently solve this problem by randomly switching its transmission channels. However, it is extremely complex to design an FH sequence (FHS) in a coloured noise scenario where different channels have different noise levels. To address this issue, in this paper, we propose a novel probabilistic FHS based on spectrum sensing. The FHS achieves the LPD among typical FHS under the constraint on a prescribed bit error rate. The authors present two algorithms that are used to generate the FHS and we analyse their computational complexity. To evaluate the performance of the sequence, we derive an expression for the probability of detection (PD). Simulation results show that the system bit error rate and the PD of the proposed FHS are low, and can be flexibly adjusted according to various practical requirements.