We consider the Cramer-Rao bound (CRB) for data-aided channel estimation for OFDM with known symbol padding (KSPOFDM). The pilot symbols used to estimate the channel are positioned not only in the guard interval but also on some of the OFDM carriers, in order to improve the estimation accuracy for a given guard interval length. As the true CRB is very hard to evaluate, we derive an approximate ...

In order to enhance the resource utilisation of netted radar system, a receiving allocation (RRA) strategy for target localisation is developed in this article. Receiving refers node and processing approach adopted. The aim proposed RAA select receiver corresponding minimise cost while satisfying desired accuracies. includes implementation approaches distance data transmission. Cramer-Rao bound...

Multiple antennas arrays combined with high carrier frequencies play a key role in wireless networks for communications but also localization and sensing applications. To understand the fundamental limits of electromagnetically large antenna localization, this paper combines wave propagation theory estimation theory, computes Cramér-Rao Bound (CRB) source position on basis three Cartesian compo...

This paper develops a fast maximum likelihood method for estimating the impulse responses ofmultiple FIR channels driven by an arbitrary unknown input. The resulting method consists of two iterative steps, where each step minimizes a quadratic function. The twostep maximum likelihood(TSML) method is shown to be high-SNR efficient, i.e., attaining the Cramer-Rao lower bound (CRB) at high SNR. Th...

In this paper, a tensor-based approach to blind despreading of long-code multiuser DSSS signals is proposed. We aim generalize the methods originally developed for separation short-code cases. Firstly, we model intercepted with an antenna-array receiver as three-order tensor missing values, and then, problem can be formulated canonical or parallel factor (CANDECOMP/PARAFAC) decomposition missin...

We consider the passive direction-of-arrival (DOA) estimation problem using arrays of acoustic vector sensors located in a fluid at or near a reflecting boundary. We formulate a general measurement model applicable to any planar surface, derive an expression for the Cramér–Rao bound (CRB) on the azimuth and elevation of a single source, and obtain a bound on the mean-square angular error (MSAE)...

The aim of this correspondence is to report in a closed-form expression a lower bound on the performance of sampling clock frequency offset (SFO) estimators for both single carrier and multi-carrier linearly modulated signals. This benchmark is expressed in terms of the so-called modified CramerRao bound (MCRB), which is shown to coincide asymptotically asymptotically (large sample) with the Cr...

Direction of Arrival (DoA) estimation using Sparse Linear Arrays (SLAs) has recently gained considerable attention in array processing thanks to their capability provide enhanced degrees freedom resolving uncorrelated source signals. Additionally, deployment one-bit Analog-to-Digital Converters (ADCs) emerged as an important topic processing, it offers both a low-cost and low-complexity impleme...

We derive the Cramér-Rao lower bounds (CRB) for parametric estimation of the number-weighted particle size distribution (PSD) from multiangle Dynamic Light Scattering (DLS) measurements. The CRB is a useful statistical tool to investigate the optimality of the PSD estimators. In the present paper, a Gaussian mixture (GM) model of the multimodal PSD is assumed and the associated Fisher informati...

We consider the problem of training symbol placement for timing acquisition in band-limited, baudrate sampled systems with inter-symbol interference and frequency offset. The conventional approach is to place known symbols at the start of the transmitted packet and use these at the receiver to run a trained phase-locked loop. We introduce an additional degree of freedom by allowing arbitrary lo...