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AuthorHafez, Mohammed
AuthorKhattab, Tamer
AuthorShalaby, Hossam M. H.
Available date2015-06-23T09:59:33Z
Publication Date2015-02
Publication NameIEEE Transactions on Wireless Communications
CitationHafez, M.; Khattab, T.; Shalaby, H., "Blind SNR Estimation of Gaussian-Distributed Signals in Nakagami Fading Channels," Wireless Communications, IEEE Transactions on , vol.PP, no.99, pp.1-10
ISSN1536-1276
URIhttp://dx.doi.org/10.1109/TWC.2015.2403325
URIhttp://hdl.handle.net/10576/3377
AbstractA blind (non-data-aided) SNR estimator using the statistical moments of the received signal is proposed. The proposed envelope-based non-data-aided estimator works for any time-domain Gaussian-distributed signal (e.g. OFDM signals). A closed-form expression for the estimated SNR as a function of the moments of the received signal and the Nakagamim parameter, is derived. Interestingly, the obtained expression shows that the proposed estimator operation and performance is independent of the constellation of the received signal. Moreover, the existence of the closed-form expression results in lower implementation complexity. Furthermore, to enable theoretical performance analysis, a general mathematical expression is derived for the even moments of the received signal in terms of SNR and the Nakagami-m parameter. The performance of the proposed estimator is evaluated based on the mean-squarederror, under different conditions of the channel. An extension of our SNR estimation method into multiple antennas configurations is provided. Our results reveal that the proposed estimator works better in low SNR conditions which is attractive to applications such as cognitive radio spectrum sharing scenarios.
SponsorQNRF NPRP 09-1168-2-455
Languageen
PublisherIEEE
SubjectGaussian distribution
Nakagami channels
antenna arrays
Low SNR estimation
TitleBlind SNR Estimation of Gaussian-Distributed Signals in Nakagami Fading Channels
TypeArticle
Pagination3509-3518
dc.accessType Abstract Only


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