Abstract
This paper investigates the physical layer security of orthogonal frequency division multiplexing technique. The investigation considers a multi-user untrustworthy half/full-duplex based two-way wireless relay with a finite number of friendly jammers in the system model. According to Monte-Carlo simulation results, the system model that operates in full-duplex mode achieves slightly better secrecy outage performance than the system model that operates in half-duplex mode. The results also show that friendly jammers, besides minimizing the information leakage, degrade the system performance severely and cause system coding gain losses in high signal-to-noise ratios.
Highlights
IN RECENT years, the number of mobile users/applications have increased dramatically
Some of the studies in the literature that consider the orthogonal frequency division multiplexing (OFDM)/orthogonal frequency division multiple access (OFDMA) techniques to conduct information are summarized as: Reference [5] assumes that source terminal communicates with L destinations by means of a single amplifyand-forward (AF) one-way relay (OWR). [5] assumes that each mobile station utilizes the OFDM transceiver with N subcarriers
We provide numerical results, which is based on monte-carlo simulations, regarding the system e2e secrecy outage performance
Summary
IN RECENT years, the number of mobile users/applications have increased dramatically. The OFDM technique is considered in this study In this regard, some of the studies in the literature that consider the OFDM/orthogonal frequency division multiple access (OFDMA) techniques to conduct information are summarized as: Reference [5] assumes that source terminal communicates with L destinations by means of a single amplifyand-forward (AF) one-way relay (OWR). [11] considers multi-user one-way information exchange traffic with an untrustworthy full-duplex (FD) relay terminal by using OFDM strategy. 343 BALKAN JOURNAL OF ELECTRICAL & COMPUTER ENGINEERING, Vol 7, No 3, July, 2019 of a finite number of friendly jammers and investigates secrecy outage probability (SOP) performance. The differences can be summarized as: First, this paper utilizes a multi-user untrustworthy AF HD/FD based TWR system structure that considers OFDM strategy. Phase I (MAC Phase) Phase II (HD) (Broadcast Phase) Friendly Jammer LI (FD Case)
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