Results 121 to 130 of about 8,935 (157)

Angle of arrival estimation without EVD for coherent sources

2008 International Conference on Telecommunications, 2008
A novel method is introduced in this paper that estimates direction of arrival (DOA) utilizing coherent and noncoherent signals that are impinging on an array of antenna elements in multipath environment. This algorithm presents several advantages over the classical subspace algorithms such as root MUSIC and ESPRIT with forward/backward spatial ...
Amjad Salameh, Jonathan Bagby
openaire   +2 more sources

Online angle of arrival estimation in the presence of mutual coupling

2016 IEEE Statistical Signal Processing Workshop (SSP), 2016
A novel algorithm for estimating the Angles of Arrival (AoA) of multiple sources in the presence of mutual coupling is derived. We first formulate an “Equality Constrained Quadratic Optimisation” problem, then derive a suitable MUSIC-like algorithm to solve the aforementioned problem, and thus obtain good estimates of the AoA parameters ...
Ahmad Bazzi, Dirk T. M. Slock, Lisa Meilhac   +2 more
openaire   +2 more sources

Positioning Based on 2-D Angle of Arrival Estimation

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
We study the problem of determining the position of a node via the exploitation of 2-D angle of arrival estimation (azimuth and elevation), using orthogonal linear arrays. We also consider the presence of hardware impairments that include RF carrier frequency, phase, and DC offsets.
INSERRA D., TONELLO, Andrea, MORET N.
openaire   +1 more source

Indoor Angle of Arrival positioning using biased estimation

2009 7th IEEE International Conference on Industrial Informatics, 2009
We consider the problem of estimating the position of an indoor wireless transmitter. Based on Angle of Arrival (AOA) readings from several base stations, a wireless transmitter's position has traditionally been determined using a least-squares approach. In particular, care is taken to ensure that the least-squares estimator is unbiased.
Bertrand Tay, Wei Liu, Dan Hong Zhang
openaire   +1 more source

Radar Angle-of-Arrival Estimation

2013
The paper focus on interferometer angle error and on the signal processing required for interferometry, but also introduce monopulse angle-of-arrival for comparison. This chapter, derive the basic equations for monopulse angle estimation and discuss the fundamentals of eigen-based superresolution techniques.
openaire   +1 more source

Error estimation in angle of arrival in smart antenna

2011 International Conference on Information and Communication Technologies, 2011
Rapidly growing demand in mobile communication system required technology which will provide minimum errors and maximize SNR in a particular angle/direction. Smart antenna has a system for directed a beam towards desired angle/direction and suppress/cancel interference from undesired angle/direction.
Sangita Lalchand, Muhammad Mazhar Manzoor, Amir Ijaz, Imran Ahmed Awan, Asad Ali Siddique   +4 more
openaire   +1 more source

New and Less Complex Approach to Estimate Angles of Arrival

2017
Accurate angle/direction of arrival (AOA/DOA) estimation is an important issue which, helps mobile communications, wireless positioning and signal processing systems to improve their performance significantly. This paper proposes a new method to estimate the direction of arrival of signals. The proposed estimator is dependent on applying the eigenvalue
Mohammed A. G. Al-Sadoon, Abdulkareem S. Abdullah, Ramzy S. Ali, Ali A. S. Alabdullah, Raed A. Abd-Alhameed, Steve M. R. Jones, James M. Noras   +6 more
openaire   +2 more sources

Angle of arrival estimation using spectral interferometry

Journal of Luminescence, 2010
We have developed a correlative signal processing concept based on a Mach-Zehnder interferometer and spatial-spectral (S2) materials that enables direct mapping of RF spectral phase as well as power spectral recording. This configuration can be used for precise frequency resolved time delay estimation between signals received by a phased antenna array ...
Z.W. Barber, C. Harrington, C.W. Thiel, W.R. Babbitt, R. Krishna Mohan   +4 more
openaire   +1 more source

Estimating angles of arrivals in the presence of mutual coupling

1987 Antennas and Propagation Society International Symposium, 2005
In this paper, we examine the eigenstructure of the covariance matrix of an antenna array under mutual coupling and show that its distortion can be properly compensated by using a modified search vector in performing estimations. Computer simulation results are presented. They validate our analysis. FORMULATION Let us consider the problem of estimating
null Chien-Chung Yeh, null Maw-Lin Leou
openaire   +1 more source

Angle of Arrival Estimation for Non-Circular Signals

2006 IEEE Sarnoff Symposium, 2006
A new algorithm is introduced in this paper that estimates one dimension direction of arrivals utilizing coherent and noncoherent non-circular sources. Examples of such sources are binary shift keying (BPSK) and M-ary amplitude shift keying (MASK). This algorithm presents several advantages over the classical subspace algorithms such as Root MUSIC and ...
Amjad Salameh, Nizar Tayem
openaire   +1 more source