Low probability of detection communication: opportunities and challenges

Shihao Yan, Xiangyun Zhou, Jinsong Hu*, Stephen V. Hanly

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


LPD communication has recently emerged as a new transmission technology to address privacy and security in wireless networks. Recent studies have established the fundamental limits of LPD communication in terms of the amount of information that can be conveyed from a transmitter to a receiver subject to a constraint on a warden's detection error probability. The established information-theoretic metric enables analytical studies on the design and performance of LPD communication under various channel conditions. In this article, we present the key features of LPD communication and discuss various important design considerations. First, we clarify the differences between LPD communication and well-known physical-layer security. Then, from an information-theoretic point of view, we discuss the optimal signaling strategies for transmitting the message-carrying signal and artificial noise signal for LPD communication. Finally, we identify the key challenges in the design of practical LPD communication systems and point out future research directions in this context. This article provides guidelines for designing practical LPD communication strategies in wireless systems and networks.

Original languageEnglish
Pages (from-to)19-25
Number of pages7
JournalIEEE Wireless Communications
Issue number5
Publication statusPublished - Oct 2019


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