Cooperative Spectrum Sensing with Distributed/Centralized Relay Selection

Halima, Nadhir Ben; Boujemâa, Hatem

doi:10.1007/s11277-020-07589-4

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…The existing works in CSS mostly incorporate single best relay selection strategies [13][14][15][16] to offer higher bandwidth efficiency. However, in this case, degradation in performance is observed in terms of error rate and outage probability due to inefficient exploitation of the spatial diversity.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, it is more energy efficient as opposed to the single best relay selection strategies used in existing works. [13][14][15] Next, an optimal PSR protocol is derived to improve the existing model in Zou et al 20 by incorporating flexibility in the relay positions. The proposed system also uses hard decision fusion rule, which is better suited for systems with large number of SUs.…”

Section: Introductionmentioning

confidence: 99%

“…It is further shown in Peh and Liang 12 that the optimum performance in CSS is achieved by the cooperation of a certain number of active CR nodes with the highest signal‐to‐noise ratio (SNR) of the PU, rather than all the CR nodes in the network. The works presented in Halima and Boujemaa 13 and Alhamad and Boujemaa 14,15 use single relay selection to perform spectrum sensing for distributed and centralized networks, respectively. Opportunistic amplify and forward (OAF) relaying, partial relay selection (PRS), and reactive relay selection (RRS) have been considered in both 14,15 .…”

Section: Introductionmentioning

confidence: 99%

“…In the proposed model, multi‐relay selection is used to obtain a better tradeoff between the error performance and the spectral efficiency. Moreover, it is more energy efficient as opposed to the single best relay selection strategies used in existing works 13–15 . Next, an optimal PSR protocol is derived to improve the existing model in Zou et al 20 by incorporating flexibility in the relay positions.…”

Section: Introductionmentioning

confidence: 99%

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A novel relay‐aided centralized cooperative spectrum sensing scheme using radio frequency energy harvesting

Majumdar

Thakur

Chattopadhyay

2022

Int J Communication

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Summary In a cooperative spectrum sensing (CSS) network, the primary signal can be used as a radio frequency (RF) source in order to power the energy‐constrained sensor nodes of the secondary network. This work presents a novel hybrid model combining an optimal relay selection scheme to incorporate RF energy harvesting in a centralized CSS network. The secondary users, which are equipped with RF energy harvesting capabilities, act as relays in order to forward the sensing information to a fusion center. Here, we have derived an enhanced multi‐relay selection strategy to maximize the end‐to‐end signal‐to‐noise ratio of the links. Furthermore, a new voting rule is proposed based on the generalized K‐out‐of‐M rule, such that it minimizes our objective error function. The performance analysis of our proposed model is presented with respect to the flexible relay positions. We have used complementary receiver operating characteristic curves for analyzing the detection performance of the CSS model with our derived voting rule. Simulation results using MATLAB show that the proposed model gives a better detection probability and a smaller error rate than some related existing works.

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Section: Introductionmentioning

confidence: 99%