Novel Subcarrier Pairing Strategy for DF Relayed Secure OFDMA with Untrusted Users
Citations
15 citations
Cites background from "Novel Subcarrier Pairing Strategy f..."
...A preliminary version of this work was recently presented in [1]....
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6 citations
Cites background from "Novel Subcarrier Pairing Strategy f..."
...In case of dual-hop DF relay-assisted FSO communication, the end-toend ergodic capacity can be expressed as [24]:...
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4 citations
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References
1,294 citations
"Novel Subcarrier Pairing Strategy f..." refers background in this paper
...To this end, physical layer security has emerged as a less-complex cost-effective solution compared to higher layer cryptographic techniques [1]....
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211 citations
"Novel Subcarrier Pairing Strategy f..." refers background in this paper
...It has recently [2] been studied for OFDMA-based broadcast as well as cooperative communication for next generation networks such as, fourth-generation (4G) LTE and 5G systems....
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164 citations
"Novel Subcarrier Pairing Strategy f..." refers methods in this paper
...[9] considered SCP in a non-secure OFDMA system with both AF and DF relay....
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110 citations
"Novel Subcarrier Pairing Strategy f..." refers background in this paper
...External Eavesdropper: In a decode-and-forward (DF) relay assisted single source destination pair communication in presence of an external eavesdropper, [3] solved power allocation under system power budget constraint with availability of direct link....
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...All nodes are considered to have single antenna [3], [4]....
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...The system models in physical layer security can be broadly classified in two categories, one having external eavesdropper [3], [4], and the other having untrusted users [5]–[7]....
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...Perfect channel state information of all the links is available at S as all users are legitimate [3]–[6]....
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60 citations
"Novel Subcarrier Pairing Strategy f..." refers background or result in this paper
...Ordered pairing (OP) [8] has been considered to highlight the efficacy of proposed optimal SCP which has been specially designed for secure cooperative communication systems....
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...Thus, the simple ordered SCP strategy [8] of matching the sorted gains on S −R link and R−U link, proposed for non-secure OFDMA, may not provide optimal performance in secure OFDMA systems because on the R−U link there are two gains γ o and γ re o for each subcarrier n on S−R link....
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...The concept of ordered pairing used in non-secure OFDMA [8] is not suitable for secure OFDMA....
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...(iii) Numerical results corroborate the analytical insights on dual role of optimal SCP, channel gain tailoring through SCP, and performance gains achieved with the help of proposed SCP over the benchmark schemes [8]....
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...The authors in [8] proved that ordered SCP is optimal in AF relayed network without direct link....
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