NDLI: A frequency hopping spread spectrum transmission scheme for uncoordinated cognitive radios

Content Provider	IEEE Xplore Digital Library
Author	Xiaohua Li Juite Hwu
Copyright Year	2009
Description	Author affiliation: Department of Electrical and Computer Engineering, State University of New York at Binghamton, 13902, USA (Xiaohua Li; Juite Hwu)
Abstract	One of the major challenges to cognitive radios is the synchronization of distributed radios onto the same spectrum white spaces which vary in time and space. In this paper, we propose a frequency-hopping spread spectrum transmission scheme which works reliably without any a priori handshaking assumption. Each cognitive radio independently detects white spaces, and then selects one of them to transmit or receive signals according to a pre-defined frequency hopping pattern. While exploiting the reliability of the white space detection capability of cognitive radios, the new scheme is robust to even large detection errors. According to the accuracy of the spectrum sensing, both the secondary data rate and the interference to primary users can be optimized by adjusting the spreading gain. Its performance is analyzed and demonstrated by simulations.
Starting Page	2345
Ending Page	2348
File Size	235500
Page Count	4
File Format	PDF
ISBN	9781424423538
ISSN	15206149
DOI	10.1109/ICASSP.2009.4960091
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-04-19
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spread spectrum communication Cognitive radio White spaces Interference Frequency synchronization Frequency shift keying Data security Feedback Performance analysis Radio transmitters synchronization cognitive radio dynamic spectrum access frequency hopping frequency shift keying
Content Type	Text
Resource Type	Article

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