A Survey on Buffer-Aided Relay Selection

Νομικός, Νικόλαος; Charalambous, Themistoklis; Krikidis, Ioannis; Skoutas, Dimitrios N.; Vouyioukas, Demosthenes; Johansson, Mikael; Skianis, Charalabos

doi:10.1109/comst.2015.2512441

Cited by 127 publications

(118 citation statements)

References 84 publications

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“…Max-Link has been extended in [13] to account for direct source-destination (SD) connectivity, which provides resiliency in low transmit SNR conditions [12]. In [14], [15], [16], [17], [18], [19], [20], buffer-aided relay selection protocols were shown to improve the Max-Link performance by reducing the average packet delay, ensuring a good diversity gain, and/or achieving full diversity gain with a smaller buffer size as compared to Max-Link.…”

Section: A Prior and Related Workmentioning

confidence: 99%

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Cloud-Aided Max-Link Relay Selection for Two-Way Cooperative Multi-Antenna Systems

Duarte

Lamare

2019

2019 53rd Asilomar Conference on Signals, Systems, and Computers

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In this work, we present a switched relaying framework for multiple-input multiple-output (MIMO) relay systems where a source node may transmit directly to a destination node or aided by relays. We also investigate relay selection techniques for the proposed switched relaying framework, whose relays are equipped with buffers. In particular, we develop a novel relay selection protocol based on switching and the selection of the best link, denoted as Switched Max-Link. We then propose the Maximum Minimum Distance (MMD) relay selection criterion for MIMO systems, which is based on the optimal Maximum Likelihood (ML) principle and can provide significant performance gains over other criteria, along with algorithms that are incorporated into the proposed Switched Max-Link protocol. An analysis of the proposed Switched Max-Link protocol and the MMD relay selection criterion in terms of computational cost, pairwise error probability, sum-rate and average delay is carried out. Simulations show that Switched Max-Link using the MMD criterion outperforms previous works in terms of sum-rate, pairwise error probability, average delay and bit error rate.

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Section: A Prior and Related Workmentioning

confidence: 99%

“…The metrics D (D u SRi , D u RiD and D SD ) are calculated in (11), (12) and (16), for each of the C N M s 2 possibilities. However, in the following, we will show that it is not necessary to calculate all these possibilities.…”

Section: A Impact Of the MMD And Qn Criteria On Relay Selectionmentioning

confidence: 99%

Cloud-Aided Max-Link Relay Selection for Two-Way Cooperative Multi-Antenna Systems

Duarte

Lamare

2019

2019 53rd Asilomar Conference on Signals, Systems, and Computers

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“…[1]- [3]. In addition, some variations of BRS such as [4] and buffer-aided relay selection policies [5] have also been developed.…”

Section: Introductionmentioning

confidence: 99%

Learning to Be Energy-Efficient in Cooperative Networks

Zhou

Sheng

2016

IEEE Commun. Lett.

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Abstract-Cooperative communication has great potential to improve the transmit diversity in multiple users environments. To achieve a high network-wide energy-efficient performance, this letter poses the relay selection problem of cooperative communication as a noncooperative automata game considering nodes' selfishness, proving that it is an ordinal game (OPG), and presents a game-theoretic analysis to address the benefitequilibrium decision-making issue in relay selection. A stochastic learning-based relay selection algorithm is proposed for transmitters to learn a Nash-equilibrium strategy in a distributed manner. We prove through theoretical and numerical analysis that the proposed algorithm is guaranteed to converge to a Nash equilibrium state, where the resulting cooperative network is energy-efficient and reliable. The strength of the proposed algorithm is also confirmed through comparative simulations in terms of energy benefit and fairness performances.

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“…In case of deep fading in the AL, data can be stored at the RN's buffer until the AL channel condition becomes suitable for transmission again. Once, the AL channel condition is favorable, then, the RN can forward the previously buffered data to the UE [30][31][32]. In this setting, we denote the e2e data rate by wb e2e .…”

Section: Resource Allocationmentioning

confidence: 99%

End-to-End Data Rate Performance of Decode-and-Forward Relaying with Different Resource Allocation Schemes

Ullah

Dowhuszko

Zheng

et al. 2017

Mobile Information Systems

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This paper studies the end-to-end (e2e) data rate of dual-hop Decode-and-Forward (DF) infrastructure relaying under different resource allocation schemes. In this context, we first provide a comparative analysis of the optimal resource allocation scheme with respect to several other approaches in order to provide insights into the system behavior and show the benefits of each alternative. Then, assuming the optimal resource allocation, a closed form expression for the distribution of the mean and outage data rates is derived. It turns out that the corresponding mean e2e data rate formula attains an expression in terms of an integral that does not admit a closed form solution. Therefore, a tight lower bound formula for the mean e2e data rate is presented. Results can be used to select the most convenient resource allocation scheme and perform link dimensioning in the network planning phase, showing the explicit relationships that exist between component link bandwidths, SNR values, and mean data rate.

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A Survey on Buffer-Aided Relay Selection

Cited by 127 publications

References 84 publications

Cloud-Aided Max-Link Relay Selection for Two-Way Cooperative Multi-Antenna Systems

Cloud-Aided Max-Link Relay Selection for Two-Way Cooperative Multi-Antenna Systems

Learning to Be Energy-Efficient in Cooperative Networks

End-to-End Data Rate Performance of Decode-and-Forward Relaying with Different Resource Allocation Schemes

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