Now showing items 151-155 of 155
Statistics of the MLE and approximate upper and lower bounds-part II: Threshold computation and optimal pulse design for TOA estimation
(Institute of Electrical and Electronics Engineers Inc., 2014)
Threshold and ambiguity phenomena are studied in Part I of this paper where approximations for the mean-squared error (MSE) of the maximum-likelihood estimator are proposed using the method of interval estimation (MIE), ...
Theoretical limits on time delay estimation for ultra-wideband cognitive radios
In this paper, theoretical limits on time delay estimation are studied for ultra-wideband (UWB) cognitive radio systems. For a generic UWB spectrum with dispersed bands, the Cramer-Rao lower bound (CRLB) is derived for ...
On the improvability and nonimprovability of detection via additional independent noise
Addition of independent noise to measurements can improve performance of some suboptimal detectors under certain conditions. In this letter, sufficient conditions under which the performance of a suboptimal detector ...
Image denoising using adaptive subband decomposition
In this paper, we present a new image denoising method based on adaptive subband decomposition (or adaptive wavelet transform) in which the filter coefficients are updated according to an Least Mean Square (LMS) type ...
Radio context awareness and applications
The context refers to "any information that can be used to characterize the situation of an entity, where an entity can be a person, place, or physical object." Radio context awareness is defined as the ability of detecting ...