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Enhanced Media Access Scheme for Distributed Spectrum Sensing

Yohannes D. ALEMSEGED, Chen SUN, Ha NGUYEN TRAN, Hiroshi HARADA

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Summary :

In distributed spectrum sensing, spatially distributed sensors perform radio frequency (RF) sensing and forward the result to a fusion center (FC). Cognitive radio (CR) obtains spectral information from the FC. Distributed spectrum sensing facilitates reliable discovery of spectrum opportunity while providing enhanced protection to legacy systems. The overall performance of distributed spectrum sensing depends both on the quality of sensing at the individual sensors and the forwarding scheme from the individual sensors. In this aspect the choice of media access control (MAC) plays a significant role. We can improve the system performance by optimizing the MAC and the spectrum sensing parameters jointly. In this paper we propose an enhanced MAC scheme based on existing scheduled MAC protocols to yield a high performance distributed spectrum sensing. To demonstrate our idea, we provide computer simulation by considering energy detection based distributed spectrum sensors and IEEE 802.15.4 PHY and MAC parameters.

Publication
IEICE TRANSACTIONS on Communications Vol.E93-B No.12 pp.3266-3273
Publication Date
2010/12/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E93.B.3266
Type of Manuscript
Special Section PAPER (Special Section on Wireless Distributed Networks)
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