Results 81 to 90 of about 3,204 (200)

Indoor Multipath Assisted Angle of Arrival Localization [PDF]

, 2017
Indoor radio frequency positioning systems enable a broad range of location aware applications. However, the localization accuracy is often impaired by Non-Line-Of-Sight (NLOS) connections and indoor multipath effects.
De Strycker, Lieven, Wielandt, Stijn, Stijn Wielandt, Lieven De Strycker, Lieven Strycker, Strycker, Lieven De   +5 more
core   +1 more source

Controlling AoA Estimation Errors in Rician Fading via Measurement Quality Classification

IEEE Access
Angle of Arrival (AoA) estimation plays a crucial role in modern positioning systems but is often affected by errors in multipath channels. Existing methods typically lack a direct mechanism to assess the quality of the estimates, while full channel ...
Pedro Lemos, Glauber Brante, Ohara Kerusauskas Rayel, Richard Demo Souza   +3 more
doaj   +1 more source

Regularised Hyper Parameter Bi Level Optimisation With Continual Learning Based Deep Neural Network for Beamforming in Ultra‐Wide Band System

IET Communications, Volume 20, Issue 1, January/December 2026.
This research proposes a Regularised Hyperparameter Bilevel Optimisation with Continual Learning‐based Deep Neural Network (RHBO‐CLDNN) for beamforming in an Ultra‐Wide Band (UWB) system. The RHBO ensures the hyperparameter efficiency at both upper and lower levels, which allows DNN to fine‐tune the unique characteristics of the UWB system, which leads
Pradeep Kumar Siddanna, Bidare Divakarachari Parameshachari, Dharmanna Shivappa Lamani   +2 more
wiley   +1 more source

Adaptive angle of arrival estimation for multiuser wireless location systems

Reliable positioning of CDMA cellular users in a mobile environment relies on accurate knowledge of the time-of-arrival (TOA) and angle-of-arrival (AOA) of the first arriving ray.
Sayed, Ali H., Khajehnouri, N.
core   +1 more source

Angle-of-arrival measurement of a microwave signal using parallel optical delay detector

, 2013
A novel parallel optical delay detector is proposed for angle-of-arrival (AOA) measurement of a microwave signal with accuracy monitoring. A theoretical model is built up to analyze the proposed system, including measurement accuracy monitoring.
Cao, Z., Tangdiongga, E Eduward, Wang, Q., Boom, van den, H.P.A., Tangdiongga, E.; id_orcid, Lu, R Rongguo, Wang, Q Qing, Lu, R., Leijtens, X.J.M., Pustakhod, D., Tangdiongga, E., Koonen, AMJ Ton, Cao, Z Zizheng, Koonen, A.M.J., Boom, HPA Henrie van den   +14 more
core   +1 more source

2-D angle of arrival estimation using a one-dimensional antenna array [PDF]

, 2014
In this paper, a two-dimensional (2-D) angle of arrival (AOA) estimator is presented for vertically polarised waves in which a one-dimensional (1-D) antenna array is used.
McLernon, DC, Al-Jazzar, SO, Strangeways, HJ   +2 more
core   +1 more source

Accurate 2-D AOA Estimation and Ambiguity Resolution for a Single Source under Fixed Uniform Circular Arrays

International Journal of Antennas and Propagation, 2017
This paper presents an analytic algorithm for accurate two-dimensional (2-D) angle of arrival (AOA) estimation of a single source under fixed uniform circular arrays (UCAs).
Le Zuo, Jin Pan
doaj   +1 more source

Secure Transmission in ISAC Systems Aided by Active STAR‐RIS

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper investigates the secure transmission problem in an active simultaneous transmitting and reflecting intelligent reflecting surfaces (STAR‐RIS)‐aided integrated sensing and communication downlink system. Our objective is to maximize the sum secrecy rate by jointly optimizing the base station beamforming vectors, the sensing signal covariance ...
Baofeng Ji, Xinhao Guo, Shahid Mumtaz
wiley   +1 more source

Advanced array processing techniques and systems

, 2009
Research and development on smart antennas, which are recognized as a promising technique to improve the performance of mobile communications, have been extensive in the recent years.
Li, M.
core