NDLI: A novel hybrid overlay/underlay Cognitive Radio waveform in frequency selective fading channels

Content Provider	IEEE Xplore Digital Library
Author	Chakravarthy, V. Xue Li Ruolin Zhou Zhiqiang Wu Temple, M.
Copyright Year	2009
Description	Author affiliation: Wright State University, USA (Xue Li; Ruolin Zhou; Zhiqiang Wu) \|\| Air Force Research Laboratory, USA (Chakravarthy, V.) \|\| Air Force Institute of Technology, USA (Temple, M.)
Abstract	Cognitive Radio (CR) has attracted strong interest recently to solve the spectrum congestion problem. In conventional cognitive radio, either overlay waveform is used to exploit unused (white) spectrum holes to avoid interference to primary users, or underlay waveform is employed to spread over a ultrawide bandwidth with extremely low power spectrum density to minimize interference to primary users. In our previous work, we proposed a novel hybrid overlay/underlay waveform to combine the benefits of both overlay and underlay waveform, creating a soft decision cognitive radio to exploit both the unused (white) spectral regions and the underused (gray) spectral areas. Extending the spectrally modulated spectrally encoded (SMSE) framework, we provide the framework for the proposed soft decision cognitive radio. We also evaluate the performance of the hybrid overlay/underlay waveform in frequency selective fading channels. A simulated performance analysis of overlay, underlay and hybrid overlay/underlay waveforms in frequency selective fading channels is presented and benefits discussed.
Starting Page	1
Ending Page	6
File Size	655038
Page Count	6
File Format	PDF
ISBN	9781424434237
DOI	10.1109/CROWNCOM.2009.5189175
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-22
Publisher Place	Germany
Access Restriction	Subscribed
Subject Keyword	Fading Multicarrier code division multiple access Analytical models Bit error rate Laboratories Interference Bandwidth Chromium Frequency Cognitive radio
Content Type	Text
Resource Type	Article

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