NDLI: Opportunistic band sharing for point-to-point link connection of cognitive radios

Content Provider	IEEE Xplore Digital Library
Author	Hyewon Lee Kwanghun Han Youngwoo Hwang Sunghyun Choi
Copyright Year	2009
Description	Author affiliation: The School of Electrical Engineering and INMC, Seoul National University, 151-744, Korea (Hyewon Lee; Kwanghun Han; Youngwoo Hwang; Sunghyun Choi)
Abstract	Cognitive radios are typically known to exploit vacant spectrum resources yet not interfering with primary communication systems. However, cognitive radios may not be able to secure a clear spectrum band, i.e., white hole, in certain environments. Underlay spectrum sharing provides a way to cope with such a spectrum sharing problem in a bustling spectrum band; cognitive radios share the spectrum band with the spectrum licensees, i.e., primary users, by adjusting signal transmit power so as not to severely deteriorate the performance of the primary users. In this paper, we propose an underlay spectrum sharing policy for cognitive radios. Primary users are assumed to form a cellular network, and a point-to-point link of cognitive radio leverages uplink spectrum resource of the primary network. We formulate the transmit power constraints of the cognitive radio transmitter and propose a practical uplink band sharing framework. We also demonstrate that such an uplink band sharing can enhance the throughput performance of point- to-point link, while the interference to the primary users can be regulated under the allowed level decided by the primary users.
Starting Page	1
Ending Page	6
File Size	345710
Page Count	6
File Format	PDF
ISBN	9781424434237
DOI	10.1109/CROWNCOM.2009.5188994
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-22
Publisher Place	Germany
Access Restriction	Subscribed
Subject Keyword	opportunistic underlay spectrum sharing Land mobile radio cellular systems Telecommunication traffic Interference FCC Ad hoc networks Cognition Cognitive radio point-to-point communication Relays Information technology Signal to noise ratio
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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