Physical Layer Security for NOMA-Based Full Duplex Relay Networks with Non-Ideal Interference Cancellation

LI Mei-ling; LI Ying; Sami Muhaidat; WANG Gang-fei; DONG Zeng-shou; WANG An-hong; LIANG Jie

doi:10.3969/j.issn.0372-2112.2019.01.024

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Physical Layer Security for NOMA-Based Full Duplex Relay Networks with Non-Ideal Interference Cancellation

更新时间：2025-07-16

- Physical Layer Security for NOMA-Based Full Duplex Relay Networks with Non-Ideal Interference Cancellation
- Acta Electronica Sinica Vol. 47, Issue 1, Pages: 183-189(2019)
- 作者机构：
  
  1. 太原科技大学电子信息工程学院,山西,太原,030024
  2. 英国萨里大学, 萨里 GU27XH
  3. 太原科技大学电子信息工程学院,山西,太原,030024
  4. 英国萨里大学萨里 GU27XH
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61672373, No.51504255);Science and Technology Innovation Program of Colleges and Universities in Shanxi Province (No.201802090);Jincheng Science and Technology Research and Development Fund of Shanxi Province (No.201501004-4);The Collaborative Innovation Center of Internet+3D Printing in Shanxi Province;Science and Technology Innovation Team Project of Shanxi Province (No.201705D131025);1331 Key Innovation Team Project of Shanxi Province
- DOI：10.3969/j.issn.0372-2112.2019.01.024
  CLC： TN911.1
- Published Online：25 January 2019，
  
  Published：2019
- 稿件说明：
移动端阅览
LI Mei-ling, LI Ying, Sami Muhaidat, et al. Physical Layer Security for NOMA-Based Full Duplex Relay Networks with Non-Ideal Interference Cancellation[J]. Acta Electronica Sinica, 2019, 47(1): 183-189.
DOI：

LI Mei-ling, LI Ying, Sami Muhaidat, et al. Physical Layer Security for NOMA-Based Full Duplex Relay Networks with Non-Ideal Interference Cancellation[J]. Acta Electronica Sinica, 2019, 47(1): 183-189. DOI： 10.3969/j.issn.0372-2112.2019.01.024.

摘要

全双工协作中继转发信号时存在的自干扰现象会降低系统性能.本文考虑存在窃听者的下行非理想自干扰全双工协作中继非正交多址接入（NFCR-E-NOMA，Non-ideal Full Duplex Cooperative Relay in Non-Orthogonal Multiple Access system with Eavesdropper）系统，分别从系统中断概率和系统截获概率的角度分析了全双工协作中继的自干扰因素对于NFCR-E-NOMA系统安全中断性能的影响；推导了系统中断概率和截获概率的闭合表达式.仿真结果表明，全双工中继转发的自干扰因素对系统性能的影响较大，在NFCR-E-NOMA系统中，存在优化的中继转发功率，且在不同的基站发射功率和中继转发功率条件下，功率分配比对系统性能的影响也不同，在实际主链路信道条件允许的情况下，可通过设置较高的数据传输速率来抑制窃听者的截获概率.

Abstract

The imperfect self-interference cancellation in full-duplex cooperative relay networks can make the system performance reduced when the relay forwards signals.We considered the downlink non-ideal full duplex cooperative relay in non-orthogonal multiple access system with eavesdropper (NFCR-E-NOMA)

based on which

the impact of self-interference to the NFCR-E-NOMA system was analyzed by outage probabilities and intercept probabilities respectively

and whose exact closed-form expressions were derived.Simulation results show that the self-interference have great influence on the system performance.We also find that there exists optimal relay retransmitting power in the NFCR-E-NOMA system.Moreover

the power allocation ratio also has different influence on the system performance under various transmitting power in base station and relay.In addition

the intercept probability of eavesdropper can be reduced by setting higher data rate under the permission of main link.

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