NDLI: Cramer-Rao Lower Bound for Non-Data-Aided SNR Estimation of Linear Modulation Schemes

Content Provider	IEEE Xplore Digital Library
Author	Gappmair, W.
Copyright Year	1972
Abstract	Powerful parameter estimators exhibit a jitter variance which is fairly close to the Cramer-Rao lower bound (CRLB) as the theoretical limit. In contrast to symbol timing and carrier frequency/phase, not very much information is available from the open literature with respect to the signal-to-noise ratio (SNR), i. e., the CRLB has been reported only for the data- aided case and some simple M-PSK examples for non-data-aided estimation of the SNR. Motivated by this background, an efficient algorithm is presented which applies to any M-ary one/two- dimensional modulation scheme with axis/halfplane symmetry and a channel distorted by additive white Gaussian noise. Finally, the performance of different SNR estimators is compared to the derived bound.
Starting Page	689
Ending Page	693
Page Count	5
File Size	275724
File Format	PDF
ISSN	00906778
Volume Number	56
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Timing Signal to noise ratio AWGN Additive white noise Parameter estimation Jitter Frequency estimation Quadrature phase shift keying Baseband State estimation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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Cramer-Rao Lower Bound for Non-Data-Aided SNR Estimation of Linear Modulation Schemes