Contract-Based Incentive Mechanism for Cooperative NOMA Systems

Tang, Rui; Cheng, Julian; Cao, Zhaoxin

doi:10.1109/lcomm.2018.2882387

Cited by 17 publications

(22 citation statements)

References 10 publications

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“…where γ D2 is the instantaneous received E2E SINR, given as in (12). Therefore, the ergodic capacity at D 2 , defined as the expectation of the expression in (36), can be given as…”

Section: B Ergodic Capacity At Dmentioning

confidence: 99%

“…By following a similar procedure as in the proof of Proposition 7, we derive the ergodic capacity for strong user D 2 . By substituing (12) into (37), the ergodic capacity for D 2 can be developed as…”

Section: Appendix D Proof Of Propositionmentioning

confidence: 99%

“…Recently, the use of NOMA in cooperative 5G deployment scenarios has received a lot of attention, owing to the inherent gains of such cooperative relaying strategies regarding coverage extension and reliability [9][10][11][12][13][14][15][16][17]. In cooperative relaying networks, a relay node assists the communication between a source and a destination to improve the transmission range or to improve the reliability by leveraging spatial diversity [6].…”

mentioning

confidence: 99%

“…In particular, in [10] the relay was assumed to operate in half-duplex (HD) mode, whereas in [11] the FD relaying mode was considered. In [12], a contract-based incentive mechanism along with a relay selection scheme was proposed for a multi-channel dual-hop cooperative NOMA system, which is composed by one base station, multiple users, and multiple relays that can potentially assist the NOMA transmission in HD relaying mode. In [13], the outage probability and the ergodic sum rate of a NOMAbased cooperative network over Nakagami-m channels were derived, where the source was assumed to simultaneously communicate with multiple destinations through an HD-AF relay.…”

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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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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“…where γ D2 is the instantaneous received E2E SINR, given as in (12). Therefore, the ergodic capacity at D 2 , defined as the expectation of the expression in (36), can be given as…”

Section: B Ergodic Capacity At Dmentioning

confidence: 99%

Section: Appendix D Proof Of Propositionmentioning

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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show abstract

“…Consequently, contract theory constitutes a particularly prominent way to design resource allocation schemes that consider imperfect/partial CSI, under a user-centric flavor. Preliminary contract-based solutions of relevant resource allocation schemes have been discussed in [13], [32], [33]. Both [32] and [33] model the problem of relay node selection in wireless networks, while each research work employs a different multiple access technique, namely NOMA and Orthogonal Frequency Division Multiple Access (OFDMA), respectively.…”

Section: A Related Workmentioning

confidence: 99%

Unified User Association and Contract-Theoretic Resource Orchestration in NOMA Heterogeneous Wireless Networks

Diamanti

Fragkos

Tsiropoulou

et al. 2020

IEEE Open J. Commun. Soc.

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Lately, the deployment of heterogeneous wireless networks has emerged, as part of the 5G vision, to cope with the users' exaggerated service demands. In this context, the application of Non-Orthogonal Multiple Access (NOMA) technique constitutes a promising solution to facilitate a balance between spectral efficiency and system complexity. In this paper, we consider the problem of joint user association and uplink power allocation, in heterogeneous 5G wireless networks, employing NOMA technology. The coupled problem is treated under an incomplete information scenario, where the Base Stations (BSs) have statistical only knowledge of the users' channel conditions. To deal with the incompleteness of Channel State Information (CSI), a Contract Theory (CT) based approach is introduced. A Reinforcement Learning (RL) based methodology, capitalizing on the provided feedback from the communication environment is initially adopted, in order to achieve the users to BS association in an iterative and distributed manner. The problem of uplink power allocation is subsequently formulated as a contract between each BS and its corresponding users. The optimal power is thus obtained as the solution of the optimization of each BS's utility function, while ensuring the optimality of the utility function of each associated user, given the unique communications characteristics and type of each user. Detailed numerical evaluation of the performance of the proposed unified user association and power allocation framework is provided, via modeling and simulation, illustrating its operation, features and benefits, under densely deployed heterogeneous environments.

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Two-Stage Dynamic Contract Design Under Asymmetric Information in Cooperative Communication

Zhao

Fan

et al. 2019

Lecture Notes in Networks and Systems

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Contract-Based Incentive Mechanism for Cooperative NOMA Systems

Cited by 17 publications

References 10 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

Unified User Association and Contract-Theoretic Resource Orchestration in NOMA Heterogeneous Wireless Networks

Two-Stage Dynamic Contract Design Under Asymmetric Information in Cooperative Communication

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