Cognitive Multi-User Multi-Relay Network: A Decentralized Scheduling Technique

Kandelusy, Omid Moghimi; Kirsch, Nicholas J.

doi:10.1109/tccn.2020.3020299

Cited by 13 publications

(7 citation statements)

References 47 publications

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“…The framework facilitates the data transfer among SUs for N-hop primary transmission. A novel decentralised scheduling technique is developed in [25] for the cognitive multi-user multi-relay network. Their proposed technique provides an acceptable outage performance when the relaying links are stronger than the direct links.…”

Section: A Relay-assisted Cognitive Radio Networkmentioning

confidence: 99%

Multiple Description Coding for Enhancing Outage and Video Performance Over Relay-Assisted Cognitive Radio Networks

et al. 2022

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Multimedia content delivery, such as video transmission over wireless networks, imposes significant challenges include spectrum capacity and packet losses. The cognitive radio (CR) technology is developed to solve the spectrum issue, while multiple description coding (MDC) is one of the promising source coding techniques to alleviate packet loss problems and exploit the benefit of path diversity. The source information was split into several descriptions in MDC, then transmitted over a network with multiple paths. The quality of the received data increases with the number of descriptions received at the receiver. In this paper, the proposed system comprises of relay-assisted cognitive radio network using the MDC technique for video transmission. In the simulations, the outage performance of the MDC scheme over two networks, which were relay-assisted network and non-relay network, were compared. Then, the outage probability was used to estimate the video quality, peak signal to noise ratio (PSNR) of the received video. The results obtained show the benefits of the relay assisted networks by 9% improvement on average outage performance over the non-relay network. Furthermore, the video performance improved by an average of 9% in PSNR compared to the non-relay system. INDEX TERMSCognitive radio, cognitive radio networks, H.264/AVC, multiple description coding (MDC), outage performance, interweave, peak signal to noise ratio (PSNR), relay.

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Section: A Relay-assisted Cognitive Radio Networkmentioning

confidence: 99%

Multiple Description Coding for Enhancing Outage and Video Performance Over Relay-Assisted Cognitive Radio Networks

et al. 2022

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“…Among them, [31]- [32] discussed selection cooperation or coding cooperation scheme to improve diversity order. [33]- [34] studied source-relay pairing for cognitive secondary user network to reduce the interference to the primary receiver. Reference [35] pointed out that in order to improve the system performance, the optimal source-relay pairing can be achieved by exhaustive search, but the computation complexity of exhaustive search is high.…”

Section: Related Work About Source-relay Pairing In Cooperative Communicationmentioning

confidence: 99%

“…The comparison of different source-relay pairing (or relay selection) methods in [24]- [36] is given in Table II. [33]- [34] Source-relay pairing according to link SNR or channel gain in the secondary network…”

Section: Related Work About Source-relay Pairing In Cooperative Communicationmentioning

confidence: 99%

Cooperative Communication Method Based on Block Chain for a Large Number of Distributed Terminals

Zhi

Wang

2022

IEEE Access

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“…For such networks, relay selection is critical in gaining advantages in terms of performance, complexity and overhead. As a result, much research has focused on relay selection (RS) in cooperative relay networks [2]- [5].…”

Section: Introductionmentioning

confidence: 99%

“…This involves a computational complexity which is exponential in the number of hops and the number of S-D pairs. As a result, different sub-optimal RS strategies have been considered to offer less computational complexity [12], decentralization [2], [5] and practical constraints [4].…”

Section: Introductionmentioning

confidence: 99%

Optimal Routing for Multi-user Multi-hop Relay Networks via Dynamic Programming

Dayarathna¹,

Senanayake²,

Evans³

2022

Preprint

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In this paper, we study the relay selection problem in multi-user, multi-hop relay networks with the objective of minimizing the maximum outage probability across all users. When only one user is present, it is well known that the optimal relay selection problem can be solved efficiently via dynamic programming. This solution breaks down in the multi-user scenario due to dependence between users.We resolve this challenge using a novel relay aggregation approach. On the expanded trellis, dynamic programming can be used to solve the optimal relay selection problem with computational complexity linear in the number of hops. Numerical examples illustrate the efficient use of this algorithm for relay networks.

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Cognitive Multi-User Multi-Relay Network: A Decentralized Scheduling Technique

Cited by 13 publications

References 47 publications

Multiple Description Coding for Enhancing Outage and Video Performance Over Relay-Assisted Cognitive Radio Networks

Multiple Description Coding for Enhancing Outage and Video Performance Over Relay-Assisted Cognitive Radio Networks

Cooperative Communication Method Based on Block Chain for a Large Number of Distributed Terminals

Optimal Routing for Multi-user Multi-hop Relay Networks via Dynamic Programming

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