Results 141 to 150 of about 4,245 (179)
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Cramer-Rao bounds for MIMO channel estimation
2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004We investigate the performance of pilot-aided channel estimation and data detection for multi-input multi-output (MIMO) systems. We analyze and compare the Cramer-Rao bound (CRB) on channel tap estimation error for different design models of the pilot sequences.
Lamia Berriche +2 more
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ARCOS, weighted ARCOS and Cramer-Rao bounds
[Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, 1991Some insights are provided into the analysis of a recently proposed Doppler frequency estimator. The analysis of a multiplicative model and the algorithm used are reviewed. An optimal and a modified version of this algorithm are studied. The Cramer-Rao bounds for pole estimation of an equivalent autoregressive moving-average (ARMA) process are ...
Olivier Besson, Francis Castanie
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Fast computation of Cramer-Rao Bounds for TOA
2016 IEEE Latin American Conference on Computational Intelligence (LA-CCI), 2016As part of a larger scope work that studies network-based positioning, that employs timing measures, this article proposes a methodology to add Cramer-Rao Bounds (CRBs) information to the propagation model. Moreover, it enables a very quick computation of CRBs for timing, avoiding the growing computational effort resulting from Fisher's matrix ...
Esteban Garzón +3 more
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The Cramer-Rao lower bound for bilinear systems
IEEE Transactions on Signal Processing, 2006Estimation of the unknown parameters that characterize a bilinear system is of primary importance in many applications. The Cramer-Rao lower bound (CRLB) provides a lower bound on the covariance matrix of any unbiased estimator of unknown parameters. It is widely applied to investigate the limit of the accuracy with which parameters can be estimated ...
Qiyue Zou +2 more
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On the Cramer-Rao Bound for Sparse Linear Arrays
2020 54th Asilomar Conference on Signals, Systems, and Computers, 2020Using the stochastic Cramer-Rao bound for direction estimation we study the performance of nonuniformly spaced linear antenna arrays. We show that the estimation accuracy of such arrays depends primarily on the integrated SNR and the array aperture. It depends rather weakly on the exact layout of the antennas within the aperture.
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Cramer-Rao bounds for parametric shape estimation
Proceedings. International Conference on Image Processing, 2003We address the problem of computing fundamental performance bounds for estimation of object boundaries from noisy measurements in inverse problems, when the boundaries are parameterized by a finite number of unknown variables. Our model applies to multiple unknown objects, each with its own unknown gray level, or color, and boundary parameterization ...
Jong Chul Ye +2 more
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On the generalized Cramer-Rao bound for the estimation of the location
IEEE Transactions on Signal Processing, 1997It is shown that the generalized Gaussian distribution maximizes the generalized Cramer-Rao (CR) bound for the pth absolute central moment of any classical location parameter unbiased estimator. The underlying maximization is taken over the class of distributions with fixed and finite pth-order moment and exhibits particular utility in minimax designs ...
Stella N. Batalama, Dimitri Kazakos
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ON THE CRAMER RAO BOUND FOR DIRECTION FINDING OF CORRELATED SIGNALS
1990 Conference Record Twenty-Fourth Asilomar Conference on Signals, Systems and Computers, 1990., 1993In this paper we present compact closed form formulas for the Cramer Rao Bound corresponding to the joint estimation of the directions-of-arrival, the signal covariance matrix, and the noise variance. Using these formulas we investigate the effect of signal correlation on the achievable accuracy of direction finding system in a correlated signal ...
Anthony J. Weiss, Benjamin Friedlander
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Cramer–Rao Lower Bounds for Curve Fitting
Graphical Models and Image Processing, 1998Abstract We point out that the derivation of the Cramer–Rao lower bound for estimating a circular arc center and its radius by Chan and Thomas (Graphical Models Image Process.57, 1995, 527–532) has some problems although the final result is correct.
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A Cramer-Rao lower bound for complex parameters
IEEE Transactions on Signal Processing, 1994An expression is derived for a Cramer-Rao lower bound on the variance of unbiased estimators of complex parameters. >
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