Article (Scientific journals)
Eigenvalue Based Sensing and SNR Estimation for Cognitive Radio in Presence of Noise Correlation
Sharma, Shree Krishna; Chatzinotas, Symeon; Ottersten, Björn
2013In IEEE Transactions on Vehicular Technology, 62 (8), p. 3671 - 3684
Peer Reviewed verified by ORBi
 

Files


Full Text
TVTfinal.pdf
Author postprint (382.64 kB)
Download

All documents in ORBilu are protected by a user license.

Send to



Details



Keywords :
Spectrum Sensing; SNR Estimation; Noise Correlation; Random Matrix Theory
Abstract :
[en] Herein, we present a detailed analysis of an eigenvalue based sensing technique in the presence of correlated noise in the context of a Cognitive Radio (CR). We use a Standard Condition Number (SCN) based decision statistic based on asymptotic Random Matrix Theory (RMT) for decision process. Firstly, the effect of noise correlation on eigenvalue based Spectrum Sensing (SS) is studied analytically under both the noise only and the signal plus noise hypotheses. Secondly, new bounds for the SCN are proposed for achieving improved sensing in correlated noise scenarios. Thirdly, the performance of Fractional Sampling (FS) based SS is studied and a method for determining the operating point for the FS rate in terms of sensing performance and complexity is suggested. Finally, a Signal to Noise Ratio (SNR) estimation technique based on the maximum eigenvalue of the received signal’s covariance matrix is proposed. It is shown that proposed SCN-based threshold improves sensing performance in correlated noise scenarios and SNRs up to 0 dB can be reliably estimated with less than 1 % normalized Mean Square Error (MSE) in the presence of correlated noise without the knowledge of noise variance.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Sharma, Shree Krishna ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Chatzinotas, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Ottersten, Björn ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
no
Language :
English
Title :
Eigenvalue Based Sensing and SNR Estimation for Cognitive Radio in Presence of Noise Correlation
Publication date :
October 2013
Journal title :
IEEE Transactions on Vehicular Technology
ISSN :
0018-9545
Publisher :
IEEE
Volume :
62
Issue :
8
Pages :
3671 - 3684
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 01 July 2013

Statistics


Number of views
238 (42 by Unilu)
Number of downloads
123 (6 by Unilu)

Scopus citations®
 
87
Scopus citations®
without self-citations
66
WoS citations
 
68

Bibliography


Similar publications



Contact ORBilu