Secure localization and velocity estimation are of great importance in Internet-of-Things (IoT) applications particularly challenging the presence malicious attacks. The problem becomes even more practical scenarios which attack information is unknown anchor node location uncertainties occur due to mobility falsification nodes. This investigated this article. With reasonable assumptions on mode...

This paper concerns the Cramer-Rao lower bound (CRB) for the data-aided (DA) timing and/or phase recovery, i.e., the synchronization parameter acquisition is aided by a training sequence known to the receiver. For the DA parameter estimation, the CRB typically varies with the training sequence. This indicates that different training sequences offer fundamental different performance. In this man...

We evaluate generalized information measures constructed with Husimi distributions and connect them with the Wehrl entropy, on the one hand, and with thermal uncertainty relations, on the other one. The concept of escort distribution plays a central role in such a study. A new interpretation concerning the meaning of the nonextensivity index q is thereby provided. A physical lower bound for q i...

We consider a stochastic framework that is based on an optical microscope setup, which consists of the object of interest, the microscope optics, and a detector that captures the image of the object. Here, the object of interest is a pair of point sources (e.g. single molecules) and we consider imaging experiments that capture photons during a fixed acquisition time interval. Our approach to ca...

A study on emitter localization using time difference of arrival (TDOA) and frequency difference of arrival (FDOA) measurements has been increased recently. A TDOA/FDOA system generally consists of two parts: TDOA/FDOA estimation from the unknown received signal (extraction part) and position estimation of the emitter (localization part). Thus, it is important to accurately estimate TDOA and FD...

LINKÖPING Technical reports from the Automatic Control group in Linkk oping are available as UNIX-compressed Postscript les by anonymous ftp at the address 130.236.20.24

Analytical expressions are derived for the CramérRao (CR) lower bound on the variance of frequency estimates for the two-signal time-series data models consisting of either one real sinusoid or two complex sinusoids in white Gaussian noise. The expressions give the bound in terms of the signal-tonoise ratio (SNR), the number N of data samples, and a function dependent on the frequency separatio...

We apply a uniform Cramer-Rao (CR) bound [l] to study the bias-variance trade-offs in single photon emission computed tomography (SPECT) image reconstruction. The uniform CR bound is used to specify achievable and unachievable regions in the bias-variance trade-off plane. The image reconstruction algorithms considered in this paper are: 1) Space alternating generalized EM and 2) penalized weigh...

In this paper, we analyze the performance of a non-data aided near maximum likelihood (NDA-NML) estimator for symbol timing recovery in wireless communications. The performance of the estimator is evaluated for an additive noise only channel. Performance analysis is extended to fading channels characterized by Rayleigh fading, Weibull fading and log-normal fading, appropriate to a variety of tr...

We apply a uniform Cramer-Rao (CR) bound [l] to study the bias-variance trade-offs in parameter estimation. The uniform CR bound is used to specify achievable and unachievable regions in the bias-variance trade-off plane. The applications considered in this paper are: 1) twodimensional single photon emission computed tomography (SPECT) system, and 2) one dimensional edge localization.