On the Performance of Two-Way Multiple Relay Non-Orthogonal Multiple Access-Based Networks With Hardware Impairments

Tang, Xiaogang; An, Kang; Guo, Kefeng; Wang, Sunan; Wang, Xueling; Li, Jincheng; Zhou, Feng

doi:10.1109/access.2019.2939436

Cited by 24 publications

(23 citation statements)

References 43 publications

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“…Obviously, the Monte Carlo simulation verifies the accuracy of our derivation. In addition, the blue curves of D 1 and D 2 for AF-and DFbased CCN system are plotted according to (29), (31) and (46), (48), respectively; which served as a benchmark for comparison. It is shown that the outage performance of D 2 for ICN system outperforms CCN system, which verifies the conclusion in Remark 7.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Furthermore, the authors have researched relay selection schemes to take advantages of space diversity and enhance spectral efficiency in cooperative NOMA systems [25,26]. Very recently, the impact of residual transceiver hardware impairments on cooperative NOMA networks has been investigated in [27], which has also been researched in satellite-terrestrial cooperative NOMA networks [28] and two-way multiple relay NOMA networks [29].…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of Cooperative NOMA Systems with Incremental Relaying

Wang

Peng

Pei

et al. 2020

Wireless Communications and Mobile Computing

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In this paper, we investigate the performance of the non-orthogonal multiple access (NOMA) system with incremental relaying, where the relay is employed with amplify-and-forward (AF) or decode-and-forward (DF) protocols. To characterize the outage behaviors of the incremental cooperative NOMA (ICN) system, new closed-form expressions of both exact and asymptotic outage probability for two users are derived. In addition, the performance of the conventional cooperative NOMA (CCN) system is analyzed as a benchmark for the the purpose of comparison. We confirm that the outage performance of the distant user is enhanced when ICN system is employed. Numerical results are presented to demonstrate that (1) the near user of the ICN system achieves better outage behavior than that of the CCN system in the low signal-to-noise ratio (SNR) region; (2) the outage performance of distant user for the DF-based ICN system is superior to that of the AF-based ICN system when the system works in cooperative NOMA transmission mode; and (3) in the low SNR, the throughput of the ICN system is higher than that of the CCN system. authors of [9] have researched the performance of a downlink single-cell NOMA network when assuming imperfect channel state information (CSI) and second-order statistics. Furthermore, the authors in [10] consider the scenario that each user only feedback one bit of its CSI to a base station (BS) and analyzed the outage performance. Apart from these researches, there are a lot of studies on improving the secrecy performance of multiple users [11,12], where the external and internal eavesdropping scenarios have been considered. Up to now, NOMA has been extended to cooperative communication systems [13, 14], as the higher diversity and extended coverage can be obtained in wireless networks. The authors have analyzed the outage performance of NOMA system with decode and forward (DF) relay employing full-duplex (FD) and half-duplex (HD) mode, where the near user was selected as a relay to deliver information and improve transmission reliability of distance users [15]. Inspired by this, simultaneous wireless information and

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Cooperative NOMA Systems with Incremental Relaying

Wang

Peng

Pei

et al. 2020

Wireless Communications and Mobile Computing

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“…In [10], a hybrid two-way relaying scheme was proposed, which combined the NOMA and network coding techniques. The authors in [11] investigated a NOMATWR network (TWRN) with multiple relays. It was shown in [11] that the spectral efficiency and the spatial diversity can be enhanced with NOMA transmission and relay selection.…”

Section: Introductionmentioning

confidence: 99%

“…The authors in [11] investigated a NOMATWR network (TWRN) with multiple relays. It was shown in [11] that the spectral efficiency and the spatial diversity can be enhanced with NOMA transmission and relay selection.…”

Section: Introductionmentioning

confidence: 99%

Sum-Rate Performance of A NOMA-based Two-Way Relay Approach for A Two-User Cellular Network

Li¹

2021

KSII TIIS

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This paper considers a cellular two-way relay network with one base station (BS), one relay station (RS), and two users. The two users are far from the BS and no direct links exist, and the two users exchange messages with the BS via the RS. A non-orthogonal multiple access (NOMA) and network coding (NC)-based decode-and-forward (DF) two-way relaying (TWR) scheme TWR-NOMA-NC is proposed, which is able to reduce the number of channel-uses to three from four in conventional time-division multiple access (TDMA) based TWR approaches. The achievable sum-rate performance of the proposed approach is analyzed, and a closed-form expression for the sum-rate upper bound is derived. Numerical results show that the analytical sum-rate upper bound is tight, and the proposed TWR-NOMA-NC scheme significantly outperforms the TDMA-based TWR and NOMA-based one-way relaying counterparts.

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“…Outage probability and ergodic rate were also used in [37] to investigate the effect of residual hardware impairments (RHIs), channel estimation errors (CEEs) and imperfect SIC on cooperative NOMA system over Nakagami-m channels. HIs impact on two way multiple relay NOMA networks was investigated in [38], the opportunistic relay selection was applied to improve the spectral efficiency. The authors also studied the EE of the system.…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency Maximization in Downlink Multi-Cell Multi-Carrier NOMA Networks With Hardware Impairments

Adam

Wang

2020

IEEE Access

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In this paper, we investigate energy efficiency (EE) maximization in multicell multicarrier non-orthogonal multiple access (MCMC-NOMA) networks with hardware impairments (HIs). We formulate the optimization problem as a mixed integer nonlinear NP-hard problem, which is difficult to solve efficiently. To solve this problem, we decompose it into two subproblems. The first subproblem is the user and base station (BS) association and subchannel assignment problem, where binary whale optimization algorithm (BWOA) is proposed to handle it. For the second subproblem of the non-convex power allocation problem, successive pseudo-convex approximation (SPCA) is employed to establish the problem's pseudoconvexity. The approximate problem is separable into a sequence of equivalent problems that can be easier to solve. Each problem of the obtained sequence has a stationary point solution and is guaranteed to converge. The simulation results demonstrate that the proposed algorithm achieves a performance comparable to that of the successive lower bound maximization (SLBM) algorithm and outperforms both fractional transmit power allocation (FTPA) benchmark for NOMA and the conventional orthogonal multiple access (OMA). INDEX TERMS Binary whale optimization algorithm (BWOA), energy efficiency (EE), hardware impairments (HIs), multi-cell multi-carrier (MCMC), non-orthogonal multiple access (NOMA).

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On the Performance of Two-Way Multiple Relay Non-Orthogonal Multiple Access-Based Networks With Hardware Impairments

Cited by 24 publications

References 43 publications

Performance Analysis of Cooperative NOMA Systems with Incremental Relaying

Performance Analysis of Cooperative NOMA Systems with Incremental Relaying

Sum-Rate Performance of A NOMA-based Two-Way Relay Approach for A Two-User Cellular Network

Energy Efficiency Maximization in Downlink Multi-Cell Multi-Carrier NOMA Networks With Hardware Impairments

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