NDLI: Channel sensing and estimation in cognitive relay networks

Content Provider	IEEE Xplore Digital Library
Author	Ozcan, G. Gursoy, M.C.
Copyright Year	2012
Description	Author affiliation: Department of Electrical Engineering and Computer Science, Syracuse University, Syracuse, NY 13244 (Ozcan, G.; Gursoy, M.C.)
Abstract	A cognitive relay system in which a cognitive secondary source seeks to communicate with a secondary destination via an amplify-and-forward (AF) relay is considered. It is assumed that neither primary user activity nor the channel conditions are initially known. Both the source and relay nodes perform channel sensing in order to detect the primary user activity through energy detection. Following the channel sensing, source and relay nodes engage in channel training. Source transmits a pilot symbol which is amplified and forwarded by the relay. Upon the reception of the noisy pilot symbol, the destination employs linear minimum mean-square error (LMMSE) estimation to estimate the overall channel between the source and destination. In this setting, the effect of imperfect channel sensing results at both the source and relay on the performance of the linear MMSE estimation is analyzed. More specifically, the dependence and interactions between channel sensing parameters (e.g., detection thresholds, the probabilities of detection and false alarm) and the LMMSE estimator are studied.
Starting Page	124
Ending Page	128
File Size	386339
Page Count	5
File Format	PDF
ISBN	9781467309707
ISSN	19483244
e-ISBN	9781467309714
DOI	10.1109/SPAWC.2012.6292871
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-17
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Sensors Channel estimation Estimation Training Fading Cognitive radio probability of false alarm Amplify-and-forward relay system channel sensing linear minimum mean-square error channel estimation probability of detection
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
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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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