Abstract
This paper investigates the physical layer security of in-home and broadband power line communications (PLC) systems threatened by colluding wireless communication (WLC) eavesdroppers, which are localized near or far from the transmitter and operate in the same frequency band. In this regard, we show that PLC and hybrid PLC-WLC channels can be considered as uncorrelated random processes. In the sequel, we confirm the severity of a WLC eavesdropper or a group of them located near the transmitter. Also, we show that a group of colluding WLC eavesdroppers located far from the transmitter poses the same security risk of only one WLC eavesdropper located near the transmitter. Finally, a discussion of wiretap code rates for achieving effective secrecy throughput is presented.
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