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 wire...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/45839/ http://irep.iium.edu.my/45839/ http://irep.iium.edu.my/45839/ http://irep.iium.edu.my/45839/1/45839_Wireless_distributed_computing_for_cyclostationary_feature_detection.pdf |
| Summary: | 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. |
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