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Exploiting Uplink NOMA to Improve Sum Secrecy Throughput in IoT Networks
Joint Authors
Yang, Weiwei
Cai, Yueming
Xiang, Zhongwu
Cheng, Yunpeng
Wu, Heng
Wang, Meng
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-07-02
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Information Technology and Computer Science
Abstract EN
This paper exploits nonorthogonal multiple access (NOMA) to enhance the uplink secure transmission in Internet of Things (IoT) networks.
Considering the different intercept ability of eavesdroppers (Eve), secrecy performances of both strong and weak Eve wiretap scenarios have been investigated.
In strong Eve wiretap scenario (SWS), Eve is assumed to be powerful enough to decode message without interference and, in weak Eve wiretap scenario (WWS), Eve is assumed to have significant demodulation capability constraint.
The new closed-form expressions of joint connection outage probability (JCOP), joint secrecy outage probability (JSOP), and sum secrecy throughput (SST) are derived in these two scenarios to indicate the impact of parameters, i.e., transmit power, codeword rate, and the placement of devices, on security performance.
In order to demonstrate the superiority of NOMA, we also investigate the secrecy performance of orthogonal multiple access (OMA) system as a benchmark.
Analysis results show that the performance in WWS is always better than that in SWS and, in low signal-to-noise ratio (SNR) or high codeword rate region, the performances of these two scenarios are close.
In addition, we present the condition that NOMA outperforms OMA in terms of SST.
Moreover, the placements of devices are significant to the SST performance of NOMA system.
The suboptimal device placement scheme has been designed to maximize SST.
Analysis results demonstrate that when Eve is far away from legal users, the suboptimal results tend to optimal.
American Psychological Association (APA)
Xiang, Zhongwu& Yang, Weiwei& Cai, Yueming& Cheng, Yunpeng& Wu, Heng& Wang, Meng. 2018. Exploiting Uplink NOMA to Improve Sum Secrecy Throughput in IoT Networks. Wireless Communications and Mobile Computing،Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1216414
Modern Language Association (MLA)
Xiang, Zhongwu…[et al.]. Exploiting Uplink NOMA to Improve Sum Secrecy Throughput in IoT Networks. Wireless Communications and Mobile Computing No. 2018 (2018), pp.1-15.
https://search.emarefa.net/detail/BIM-1216414
American Medical Association (AMA)
Xiang, Zhongwu& Yang, Weiwei& Cai, Yueming& Cheng, Yunpeng& Wu, Heng& Wang, Meng. Exploiting Uplink NOMA to Improve Sum Secrecy Throughput in IoT Networks. Wireless Communications and Mobile Computing. 2018. Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1216414
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1216414