Wireless distributed computing for cyclostationary feature detection

Recently, wireless distributed computing (WDC) concept has emerged promising manifolds improvements to current wireless technologies. Despite the various expected benefits of this concept, significant drawbacks were addressed in the open literature. One of WDC key challenges is the impact of wireles...

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Vydané v:Digital communications and networks Ročník 2; číslo 1; s. 47 - 56
Hlavní autori: Alfaqawi, Mohammed I.M., Chebil, Jalel, Habaebi, Mohamed Hadi, Datla, Dinesh
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: KeAi Communications Co., Ltd 01.02.2016
Predmet:
Cognitive radio
Cyclostationary feature detection
FFT time smoothing algorithms
Spectrum sensing
Wireless distributed computing
ISSN:2352-8648, 2352-8648
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Popis
Shrnutí:Recently, wireless distributed computing (WDC) concept has emerged promising manifolds improvements to current wireless technologies. Despite the various expected benefits of this concept, significant drawbacks were addressed in the open literature. One of WDC key challenges is the impact of wireless channel quality on the load of distributed computations. Therefore, this research investigates the wireless channel impact on WDC performance when the latter is applied to spectrum sensing in cognitive radio (CR) technology. However, a trade-off is found between accuracy and computational complexity in spectrum sensing approaches. Increasing these approaches accuracy is accompanied by an increase in computational complexity. This results in greater power consumption and processing time. A novel WDC scheme for cyclostationary feature detection spectrum sensing approach is proposed in this paper and thoroughly investigated. The benefits of the proposed scheme are firstly presented. Then, the impact of the wireless channel of the proposed scheme is addressed considering two scenarios. In the first scenario, workload matrices are distributed over the wireless channel. Then, a fusion center combines these matrices in order to make a decision. Meanwhile, in the second scenario, local decisions are made by CRs, then, only a binary flag is sent to the fusion center.
ISSN:2352-8648
2352-8648
DOI:10.1016/j.dcan.2015.09.003