Secure Millimeter-Wave Ad Hoc Communications Using Physical Layer Security

Millimeter-wave (mmWave) communications are highly promising to improve the capacity of modern wireless networks, while physical layer security (PLS) techniques hold great potential enhance critical secrecy performance therein. By carefully exploiting significant signal difference between Non-Light-of-Sight (NLoS) and Line-of-Sight (LoS) mmWave links, this paper proposes a Sight-based Cooperative Jamming (SCJ) scheme PLS ad hoc communications. In scheme, each jammer that has no LoS link its nearest receiver but may have links eavesdroppers is selected with certain probability generate artificial noise such channel advantages at legitimate receivers can be achieved. For modeling new jamming novel efficient theoretical approximation approaches firstly developed enable challenging issue interference distribution tackled, then framework based on stochastic geometry proposed capture transmission behavior under SCJ scheme. Finally, extensive numerical results provided illustrate various network scenarios.