Results 261 to 270 of about 2,207,221 (306)

Limitations on SNR estimator accuracy

IEEE Transactions on Signal Processing, 2002
We consider the samples of a pure tone in additive white Gaussian noise (AWGN) for which we wish to determine the signal-to-noise ratio (SNR) defined here to be /spl alpha/=(A/sup 2//2/spl sigma//sup 2/), where A is the tone amplitude, and /spl sigma//sup 2/ is the noise variance.
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SNR Estimation for DVB-S2 System

25th AIAA International Communications Satellite Systems Conference (organized by APSCC), 2007
[Abstract] This paper proposes an efficient signal to noise ratio (SNR) estimation method, especially costumed to the second generation digital video broadcasting via satellite (DVB-S2) system. The proposed method estimates SNR by investigating the distributions of the received signals.
Sooyoung Kim, Sooseong Kim, Eunwoo Park, Sungmoon Yeo   +3 more
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Improving SNR Estimation for Autonomous Receivers

IEEE Transactions on Communications, 2005
A method by which a popular signal-to-noise ratio (SNR) estimator can be reconfigured to yield improved performance is proposed. The reconfiguration consists of partitioning the symbol interval into a larger (but even) number of subdivisions than the two that have been traditionally suggested for this estimator but still processing the observables in ...
M.K. Simon, S. Dolinar
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SNR Estimation Methods for UWB Systems

IEEE Transactions on Wireless Communications, 2007
The problem of estimating the signal-to-noise ratio for time-hopping binary pulse position modulated signals, time- hopping binary phase shift keying signals, and direct-sequence binary phase shift keying signals in an ultra-wide bandwidth (UWB) system is studied.
Yunfei Chen, Norman Beaulieu
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NDA SNR estimation: CRLBs and EM based estimators

TENCON 2008 - 2008 IEEE Region 10 Conference, 2008
Signal to noise ratio (SNR) estimation is an important problem in many communication systems. SNR often needs to be estimated in the presence of unknown transmitted data symbols in a non data aided (NDA) manner. In this paper we derive a methodology to calculate the Cramer-Rao lower bound (CRLB) of NDA SNR estimation in an additive white Gaussian noise
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Optimal seismic resolution and SNR estimation

SEG Technical Program Expanded Abstracts 1993, 1993
Enhancing the resolution of seismic data is usually effected by increasing the bandwidth of the wavelet. This process is usually hampered by the presence of random noise in real data. Increasing the bandwidth of the wavelet tends to amplify random noise, partially negating the purpose of the process.
Maher S. Maklad, Roger O'Regan, Andrew Dilay   +2 more
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Estimating Signal-to-Noise Ratio (SNR)

IEEE Journal of Oceanic Engineering, 2008
In many scientific studies involving evaluation of competing ocean engineering systems or the fundamental limits of system performance it is necessary to compare signal power with noise power; in particular, one needs to estimate the signal-to-noise ratio (SNR).
B.T. Bosworth, W.R. Bernecky, J.D. Nickila, B. Adal, G.C. Carter   +4 more
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Efficient SNR estimation in OFDM system

2011 IEEE Radio and Wireless Symposium, 2011
It is very important to estimate the signal to noise ratio (SNR) of received signal and to transmit the signal effectively for the modern communication system. The performance of existing non-data-aided (NDA) SNR estimation methods are substantially degraded for high level modulation scheme such as M-ary amplitude and phase shift keying (APSK) or ...
Seon Ae Kim, Dong Geon An, Heung-Gyoon Ryu, Jin-up Kim   +3 more
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A Blind SNR Estimator for Digital Bandpass Signals

2006 6th International Conference on ITS Telecommunications, 2006
A subspace-based blind signal-to-noise ratio (SNR) estimation algorithm for digital bandpass signals in additive white Gaussian noise (AWGN) channel is developed in this paper. The eigenvector decomposition of the sample correlation matrix of the received signals is performed first, then the signal subspace dimension is determined, the power of the ...
Dan Sui, Lindong Ge
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Jamming detection and SNR/SNJR estimation

2011 Aerospace Conference, 2011
For proper communication system design and operation, system engineers want to make sure that the signal-to-noise ratio (SNR) and signal-to-noise-plus-jamming ratio (SNJR) are within sufficient design link margin. However, an over design to make the link margin too high is costly and is not desirable for operation.
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