Secure Primary Transmission Assisted by a Secondary Full-Duplex NOMA Relay

Chen, Bingcai; Chen, Yu; Chen, Yunfei; Cao, Yang; Ding, Zhiguo; Zhao, Nan; Wang, Xianbin

doi:10.1109/tvt.2019.2919873

Cited by 54 publications

(43 citation statements)

References 15 publications

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“…where p SIC is the error probability that U1 detects the signal of U2, p c,1 is the BER of U1 under the condition that the signal of U2 is correctly detected, and p e,1 denotes the BER of U1 when errors occur in SIC. Let us denote v = ∥e k x n − ekxn∥ 2 , where e k is the kth row of an N -dimensional unit matrix. Consequently, the formulation of p SIC can be given by [19]…”

Section: B Ber Performance Analysismentioning

confidence: 99%

“…where p R is the error probability that the relay detects the signal of U2, p c,2 is the BER of U2 when the signal of U2 is correctly detected at the relay and p e,2 denotes the BER when the relay forwards an erroneous signal. According to (2) and (6), both in the BS-to-relay and relayto-U2 links, the SM symbol is used to carry the information of U2. In addition, N − 1 antennas are used to receive the information at the relay.…”

Section: B Ber Performance Analysismentioning

confidence: 99%

“…N ON-orthogonal multiple access (NOMA) is an emerging technique to achieve high spectral efficiency (SE) [1], which allows multiple users to share radio resources using same time, frequency and code. Specifically, the base station (BS) mixes the signals from multiple users with different power levels, and the users detect their signals via successive interference cancellation (SIC) [2]. Recently, relaying has been used to enhance the reliability of communications [3]- [5].…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of Spatial Modulation Aided NOMA With Full-Duplex Relay

Jin

Chen

et al. 2020

IEEE Trans. Veh. Technol.

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A spatial modulation aided non-orthogonal multiple access with full-duplex relay (SM-NOMA-FDR) scheme is proposed for the coordinated direct and relay transmission in this paper. Specifically, the signal of the near user is mapped to an M -ary modulated symbol and the signal of the far user is mapped to an SM symbol. The base station first transmits signals to the near user and relay via SM-NOMA, and then the relay decodes and retransmits the signal of the far user. An SM-assisted FDR is used in this scheme to improve the spectral efficiency while reducing energy consumption and making full use of the antenna resources at the relay, since SM only activates one antenna in each transmission. We derive the ergodic capacity and bit error rate of the proposed scheme over independent Rayleigh fading channels. Numerical results validate the accuracy of the theoretical analysis and show the superior performance of the proposed SM-NOMA-FDR scheme.

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Section: B Ber Performance Analysismentioning

confidence: 99%

Section: B Ber Performance Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of Spatial Modulation Aided NOMA With Full-Duplex Relay

Jin

Chen

et al. 2020

IEEE Trans. Veh. Technol.

Self Cite

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“…Secure communication is also a critical issue for cooperative CR NOMA networks. Recently, physical layer security has been proposed in [21][22][23][24][25][26][27] for cooperative CR NOMA networks, where the security performance of communication networks can be greatly improved by the cooperation of the relay node (i.e., SU). e authors in [21] studied the physical layer security in a cooperative CR NOMA network where all the nodes had a single antenna and the SU employed amplify-and-forward (AF) relaying to forward the PU's signal, aiming to analyze the security performance of the PU and throughput of the SU.…”

Section: Introductionmentioning

confidence: 99%

Robust Secure Beamforming Design for Cooperative Cognitive Radio Nonorthogonal Multiple Access Networks

Zhao

2021

Security and Communication Networks

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By the integration of cooperative cognitive radio (CR) and nonorthogonal multiple access (NOMA), cooperative CR NOMA networks can improve the spectrum efficiency of wireless networks significantly. Due to the openness and exposure of wireless signals, secure communication is an important issue for cooperative CR NOMA networks. In this paper, we investigate the physical layer security design for cooperative CR NOMA networks. Our objective is to achieve maximum secrecy rate of the secondary user by designing optimal beamformers and artificial noise covariance matrix at the multiantenna secondary transmitter under the quality-of-service at the primary user and the transmit power constraint at the secondary transmitter. We consider the practical case that the channel state information (CSI) of the eavesdropper is imperfect, and we model the imperfect CSI by the worst-case model. We show that the robust secrecy rate maximization problem can be transformed to a series of semidefinite programmings based on S-procedure and rank-one relaxation. We also propose an effective method to recover the optimal rank-one solution. Simulations are provided to show the effectiveness of our proposed robust secure algorithm with comparison to the nonrobust secure design and traditional orthogonal multiple access schemes.

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“…Thus, in this work, we will primarily focus on the physical layer secrecy performance of an underlay CRN. In an effort to further improve PLS of wireless transmissions, several techniques were proposed, such as collaborative zero-forcing beamforming (ZFB) [7]- [9], cooperative relays [4], [10]- [11] and full-duplex (FD) techniques [12]- [13]. First, for a CRN, beamforming can be used not only to eliminate the interference from the secondary transmitter to the PU, but also to improve the secrecy performance of the system due to the more concentrated power to the secondary destination.…”

Section: Introductionmentioning

confidence: 99%

Secure Transmission in Cognitive Radio Networks using Full-duplex Technique with Outdated CSI

Shang¹,

Zhang²,

Wu³

et al. 2020

Preprint

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In this paper, we investigate the effects of the outdated channel state information (CSI) on the secrecy performance of an underlay spectrum sharing cognitive radio networks (CRNs) with full-duplex (FD) receivers. Legitimate destination node (Bob) acts as a FD node, transmitting interference signals to a passive eavesdropping node (Eve) while receiving signals. To exploit the benefits of collaborative zero-forcing beamforming and FD technologies, transmit antenna selection-maximal-ratio combining-zero forcing beamforming/maximal-ratio transmission-selection combining-zero forcing beamforming (TAS-MRC-ZFB/MRT-SC-ZFB) scheme is considered at the secondary user transmission link with the outdated CSI and collaborative ZFB is adopted at FD destination node, which tries to improve the transmission efficiency of our considered CRNs. Specifically, in order to evaluate the proposed scheme, the derivation of analytical expression in exact and the high asymptotic closed-form expressions of secrecy outage probability (SOP) are provided of the considered network with and without feedback delay of the CSI. Furthermore, the impact of delay on the second user transmission and interference links of the primary user (PU) node is investigated. The results reveal that outdated CSI of secondary user transmission and collaborative ZFB channels deteriorates the SOP, and the outdated CSI between PU and SU will affect the power margin factors for the secondary transmitter. Furthermore, we also study the effects of different system parameters on the secrecy diversity order and secrecy array gain. The proposed scheme is compared with the existing TAS-MRC/TAS-MRC scheme to verify the improvement of system performance. Finally, Monte Carlo simulations verify the correctness of our theoretical analysis.

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Secure Primary Transmission Assisted by a Secondary Full-Duplex NOMA Relay

Cited by 54 publications

References 15 publications

Performance Analysis of Spatial Modulation Aided NOMA With Full-Duplex Relay

Performance Analysis of Spatial Modulation Aided NOMA With Full-Duplex Relay

Robust Secure Beamforming Design for Cooperative Cognitive Radio Nonorthogonal Multiple Access Networks

Secure Transmission in Cognitive Radio Networks using Full-duplex Technique with Outdated CSI

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