NDLI: How much time is needed for wideband spectrum sensing?

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How much time is needed for wideband spectrum sensing?

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How much time is needed for wideband spectrum sensing?

Content Provider	IEEE Xplore Digital Library
Author	Yiyang Pei Ying-Chang Liang Kah Teh Kwok Li
Copyright Year	2002
Abstract	In this paper, we consider a wideband cognitive radio network (CRN) which can simultaneously sense multiple narrowband channels and thus aggregate the perceived available channels for transmission. We study the problem of designing the optimal spectrum sensing time and power allocation schemes so as to maximize the average achievable throughput of the CRN subject to the constraints of probability of detection and the total transmit power. The optimal sensing time and power allocation strategies are developed under two different total power constraints, namely, instantaneous power constraint and average power constraint. Finally, numerical results show that, under both cases, for a CRN with three 6 MHz channels, if the frame duration is 100 ms and the target probability of detection is 90% for the worst case signal-to-noise ratio of primary users being -12 dB, -15 dB and -20 dB, respectively, the optimal sensing time is around 6 ms and it is almost insensitive to the total transmit power.
File Size	362489
File Format	PDF
ISSN	15361276
Volume Number	8
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wideband Narrowband Cognitive radio Throughput Chromium Quality of service Algorithm design and analysis Aggregates Signal to noise ratio Protection Cognitive radio, power allocation, spectrum sensing optimization.
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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