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Coherent snr estimator performance
IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004, 2005Signal-to-noise ratio (SNR) is an important system parameter in mobile communication systems and other advanced communication systems. Coherent and noncoherent SNR estimators can be used to dynamically estimate SNR. In this paper, a coherent SNR estimator is proposed and its performance is provided.
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A Data-Driven Approach to A Priori SNR Estimation
IEEE Transactions on Audio, Speech, and Language Processing, 2011The a priori signal-to-noise ratio (SNR) plays an important role in many speech enhancement algorithms. In this paper, we present a data-driven approach to a priori SNR estimation. It may be used with a wide range of speech enhancement techniques, such as, e.g., the minimum mean square error (MMSE) (log) spectral amplitude estimator, the super Gaussian
Suhadi Suhadi +2 more
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Comparison of four SNR estimators for QPSK modulations
IEEE Communications Letters, 2000Four signal-to-noise ratio (SNR) estimators for quaternary phase-shift keying (QPSK)-like signaling are proposed and examined. Two are based on receiver statistics directly related to the SNR while two others are based on receiver statistics inversely related to the SNR.
Norman C. Beaulieu +2 more
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SNR and Noise Variance Estimation for MIMO Systems
IEEE Transactions on Signal Processing, 2012Accurate signal-to-noise ratio (SNR) and noise variance estimation are extremely important aspects of receiver design in multiple-input multiple-output (MIMO) systems. Typically, these parameters are estimated using known pilot/training symbols. However, significant improvements may be made by using both the known pilot symbols as well as the unknown ...
Aniruddha Das, Bhaskar D. Rao
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Iterative SNR estimation using a priori information
Digital Signal Processing, 2009A class iterative signal-to-noise ratio (SNR) estimation algorithm is proposed in this paper. The data samples are governed by a given distribution with a priori. The expectation maximization (EM) algorithm is applied to iteratively maximize the likelihood function so as to realize the SNR estimation. Cramer-Rao bounds (CRB) with different a priori are
Yuanfei Nie, Jianhua Ge, Yong Wang 0013
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A Simple and Effective Framework for a Priori SNR Estimation
2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2018The problem of estimating the a priori signal-to-noise ratio (SNR) for single-channel speech enhancement is addressed. Similar to the decision-directed approach we linearly combine the maximum likelihood estimate of the a priori SNR with an estimate obtained from the previous frame. Based on the harmonic model for voiced speech we propose to smooth the
Johannes Stahl 0003, Pejman Mowlaee
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On the impact of SNR estimation error on adaptive modulation
IEEE Communications Letters, 2005In this letter we investigate the impact of signal-to-noise ratio (SNR) estimation on the performance of adaptive modulation. The adaptive modulation technique uses an estimate of the SNR at the receiver to choose a modulation scheme so that a given performance target is met.
Maruf Mohammad, R. Michael Buehrer
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Circuit for statistical estimation of BER and SNR in telecommunications
2006 IEEE International Symposium on Circuits and Systems, 2006The key parameters that determine channel performance in telecommunications are bit error rate, Q-factor, signal to noise ratio and noise factor. Channel performance depends on signal susceptibility to attenuation, noise, jitter and other interferences in the propagating medium.
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Improved a priori snr estimation in speech enhancement
2017 23rd Asia-Pacific Conference on Communications (APCC), 2017In this paper, a modified a priori SNR estimation method with application in speech enhancement is presented. The decision directed (DD) approach for the a priori SNR estimation has been the most popular method due to its ability to eliminate musical noise in speech enhancement. However, a limitation of this method is the slow tracking of speech onsets
Lara Nahma +3 more
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An SNR-Assisted Crosstalk Channel Estimation Technique
2009 IEEE International Conference on Communications, 2009In this paper, we present a new method to estimate the crosstalk channels in VDSL systems, allowing to implement well-known pre-compensation schemes. As opposed to previously presented methods, this estimation only requires minimal changes to the current standard and equipments.
Jérôme Louveaux +5 more
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