Abstract : Recently, the authors have proposed a novel approach to Direction−Of−Arrival (DOA) estimation using the $\Hf$ criterion. This article examines the limits of performance of $\Hf$−based direction finding and arrives at a lower bound on the estimation error, analogous to the Cramer−Rao Bound (CRB). Furthermore, the analysis of the $\Hf$−based algorithm's prediction error using one of Ak...

MUSIC-based estimation of direction of arrival (DOA) using universal steering vector (USV) is experimentally studied. A fourelement array antenna and a four-channel receiver are employed for the experiment. In order to improve the accuracy of DOA estimation, USV which has already included the effect of mutual coupling between array elements and effect of array elements themselves is compensated...

This report aims to utilize existing and future Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing Wireless Local Area Network (MIMO-OFDM WLAN) systems characteristics—such as multiple subcarriers, multiple antennas, and channel estimation characteristics—for indoor location estimation systems based on the Direction of Arrival (DOA) and Radio Signal Strength Indication (R...

Estimation of the emitters’ directions with an antenna array, or Direction-of-Arrival (DOA) estimation, is an essential problem in a large variety of applications such as radar, sonar, mobile communications, and seismic exploration, because it is a major method for location determination. In wireless communications, DOA estimation may significantly improve communication efficiency and network c...

During the last two decades, Maximum Likelihood estimation (ML) has been used to determine Direction Of Arrival (DOA) and signals propagated by the sources, using narrowband array signals. The algorithm fails in the case of wideband signals. As an attempt by the present study to overcome the problem, the array outputs are transformed into narrowband frequency bins, using short time Fourier tran...

A novel DOA finding method for conformal array applications is proposed. By using sub-array divided and interpolation technique, ESPRIT-based algorithms can be used on conformal arrays for 1-D and 2-D DOA estimation. In this paper, the circular array mounted on a metallic cylindrical platform is divided to several subarrays, and each sub-array is transformed to virtual uniform linear array or v...

An approach for joint direction of arrival (DOA) angle and frequency estimation a linear array is investigated in this paper. Specifically, we make the utmost autocorrelation cross-correlation information to propose an extended DOA-matrix (EDOAM) method. Subsequently, obtain auto-paired estimates by eigenvalues corresponding eigenvectors novel DOA matrix. Furthermore, proposed method surpasses ...

In mobile radio reception, signals typically arrive at the receiver antenna from a wide range of directions due to multipath propagation. This can be described by a direction-of-arrival (DoA) distribution of the propagation environment. If the DoA distribution is known, the Doppler spectrum and the autocorrelation function can be directly computed [1]. Furthermore, handset antenna performance c...

When adaptive arrays are applied to practical problems, the performance degradation of adaptive beamforming algorithms may become even more pronounced than in the ideal case because some of underlying assumptions on the environment, sources, or sensor array can be violated and this may cause a mismatch between the look direction of the beamformer and the actual direction of arrival(DOA) of the ...

In this paper, we derive the Bayesian Cramér-Rao lower bound for three dimensional hybrid localization using time-of-arrival (ToA) and direction-of-arrival (DoA) types of measurements. Unlike previous works, we include the practical constraint that the anchor position is not known exactly but rather up to some error. The resulting bound can be used for error analysis of such a localization syst...