Exploiting Full-Duplex Two-Way Relay Cooperative Non-Orthogonal Multiple Access

Wang, Xinyu; Jia, Min; Ho, Ivan Wang‐Hei; Guo, Qing; Lau, Francis C. M.

doi:10.1109/tcomm.2018.2890264

Cited by 68 publications

(61 citation statements)

References 31 publications

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“…Additionally, it was established that increasing the power allocation factor of the strong user resulted in a performance improvement, until some value from which the outage performance of both NOMA users worsens, since the correct decoding of strong user' message depends on the success of the SIC process relative to the weak user's information. Some interesting extensions for future development of this investigation is to study optimal/suboptimal relay selection strategies and optimal power allocation schemes, such as those proposed in [18,19] for HD-relay aided NOMA scenarios, as well as to assess the impact of imperfect SIC on the system performance [22,32]. APPENDIX A PROOF OF PROPOSITION 1 In the following, we derive the exact outage probability for weak user D 1 .…”

Section: Discussionmentioning

confidence: 98%

“…In [17], the outage performance and the ergodic sum rate were investigated for a NOMA-based relaying network over Nakagami-m channels with a single FD-AF relay; however, therein a fading-free SI link at the relay was assumed. The benefits of relay-aided NOMA systems are also assessed in [18][19][20][21][22] and references thereof. For instance, the outage probability for a NOMA-based relaying system with one transmitter communicating with two receivers via multiple relays is assessed in [18].…”

mentioning

confidence: 99%

“…Aiming to balance spectral efficiency and energy conservation, the authors in [21] proposed an optimal power allocation to maximize the energy efficiency of a cooperative NOMA system employing FD twoway cognitive transmission, while maintaining the bit rate requirements of NOMA users. Considering both perfect and imperfect SIC, a FD cooperative NOMA system in which two users intend to exchange information with the assistance of one FD-DF relay was introduced in [22], and its performance was then evaluated through the outage probability and achievable ergodic rate.…”

mentioning

confidence: 99%

“…For example, an aggregate SI suppression close to 100 dB was reported in [24] by combining an advanced antenna design based on resonant wavetraps and digital cancellation. Although FD relaying has been extensively addressed in OMA-based cooperative networks [25][26][27], a few works have tackled FD in cooperative relaying networks based on NOMA [11,17,21,22]. In fact, many scenarios for the combined use of NOMA and cooperative communications based on FD relaying techniques remain still unexplored.…”

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confidence: 99%

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Performance Analysis of Full-Duplex Relay-Aided NOMA Systems Using Partial Relay Selection

Tregancini

Olivo

Osorio

et al. 2020

IEEE Trans. Veh. Technol.

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Capitalizing on the benefits of non-orthogonal multiple access (NOMA) and full-duplex relaying as key technologies to boost spectral efficiency in the next generation of wireless communications, herein we investigate the performance of a cooperative network in which a source communicates with two destinations via one node selected from a set of full-duplex amplify-and-forward relays. For this purpose, a power-domain NOMA scheme is used to transmit information from the source to the destinations, and partial relay selection is performed to choose the relay based on the channel state information of the first hops. The system performance is characterized in terms of both the outage probability and the ergodic capacity, for which, exact analytical expressions are derived in integral form. In addition, to reduce the computational complexity of the obtained analytical results, closed-form expressions are derived from lower-bound, approximate, and asymptotic analyses. From these analytical expressions, the impact on the system performance of the number of relays, the power allocation factor between the NOMA destinations, and the residual self-interference at full-duplex relays is assessed. The correctness of our analyses is validated by Monte Carlo simulations, and a comparison with the half-duplex relay-aided NOMA system counterpart is also provided.

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Section: Discussionmentioning

confidence: 98%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Performance Analysis of Full-Duplex Relay-Aided NOMA Systems Using Partial Relay Selection

Tregancini

Olivo

Osorio

et al. 2020

IEEE Trans. Veh. Technol.

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“…To further improve spectral efficiency, the FD mode has been employed in cooperative NOMA systems. The outage probability and ergodic rate of two-way relay NOMA system have been investigated [23]. In addition, the performance of FD cooperative NOMA systems in the presence of in-phase and quadrature-phase imbalance and imperfect SIC is analyzed and evaluated [24].…”

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 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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Performance analysis of power‐domain non‐orthogonal multiple access for full‐duplex two‐way relaying

Özduran

Mahmood

Νομικός

2022

Trans Emerging Tel Tech

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Non‐orthogonal multiple has the potential to improve the connectivity of wireless networks by simultaneously allowing users and devices to access the wireless medium. Meanwhile, full‐duplex communication can increase the spectral efficiency of the network as transmission and reception are concurrently performed. This article investigates full‐duplex two‐way relay communication relying on non‐orthogonal multiple access in the power‐domain. More specifically, users exchange superimposed signals and perform reception by utilizing echo‐cancellation and successive interference cancellation. For this setup, an extensive theoretical analysis is conducted, in terms of outage probability, error probability, ergodic rate, and throughput. Furthermore, by using the Lagrangian multiplier, optimal transmit power, and power allocation coefficients are determined and the relay's position is optimized to improve network performance. Our theoretical findings are verified through Monte‐Carlo simulations while significant performance gains in the optimized network case are observed.

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Exploiting Full-Duplex Two-Way Relay Cooperative Non-Orthogonal Multiple Access

Cited by 68 publications

References 31 publications

Performance Analysis of Full-Duplex Relay-Aided NOMA Systems Using Partial Relay Selection

Performance Analysis of Full-Duplex Relay-Aided NOMA Systems Using Partial Relay Selection

Performance Analysis of Cooperative NOMA Systems with Incremental Relaying

Performance analysis of power‐domain non‐orthogonal multiple access for full‐duplex two‐way relaying

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