Performance a between Wi-Fi networks and ground based radar using database assisted spectrum sensing scheme
Cognitive Radio (CR) is an intelligent method for opportunistic access of idle resources and a solution for spectrum resources scarcity. In this article a new technique for spectrum access is proposed. This technique combines spectrum sensing with geolocation database. The proposed technique is...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English English |
| Published: |
IEEE
2016
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/56877/ http://irep.iium.edu.my/56877/ http://irep.iium.edu.my/56877/ http://irep.iium.edu.my/56877/7/56877.pdf http://irep.iium.edu.my/56877/8/56877-Performance%20a%20between%20Wi-Fi%20networks%20and%20ground%20based%20radar%20using%20database%20assisted%20spectrum%20sensing%20scheme_SCOPUS.pdf |
| Summary: | Cognitive Radio (CR) is an intelligent method for
opportunistic access of idle resources and a solution for spectrum
resources scarcity. In this article a new technique for spectrum
access is proposed. This technique combines spectrum sensing with
geolocation database. The proposed technique is employed in radar
bands of (960-1400 MHz, 2.7-3.6 GHz and 5-5.85 GHz). These
bands occupy quite large bandwidth and they are utilized only
about 5%of the time. The new proposed technique is expected to
solve the problem of hidden receivers faced by spectrum sensing . It
also poses a solution for the static nature of geolocation database
method. It minimizes the interference caused by secondary users by
improving the probability of detection. Furthermore, this technique
takes advantage of the tempral spectrum opportunities resulting
from Radar rotation. In this article, primary systems protection
distance and resultant secondary Wi-Fi network is analyzed. It is
found that when blind sensing without any information about
Radar rotation and Antenna pattern is employed the primary
protection distance is very large, also the Wi-Fi network can
achieve required throughput only when it is located beyond the
protection region. On the other hand, when information about
Radar rotation and Antenna pattern is provided through database,
the secondary devices can coexist with Radar and the protection
distance will minimal as the Wi-Fi network is alloed to operate on
the same band when the Radar main Beam is not directed at it. |
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