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Your search keyword '"Wong, Kainam Thomas"' showing total 13 results
Start Over Author "Wong, Kainam Thomas" Journal ieee transactions on signal processing
13 results on '"Wong, Kainam Thomas"'

1. Analytical derivative of finite-data-record performance of Wong-Lok-Lehnert-Zoltowski's DS-CDMA 'blind' space-time receiver

Author

Tichavsky, Petr and Wong, Kainam Thomas

Subjects
Mobile communication systems -- Research, Wireless communication systems -- Research, Antenna arrays -- Analysis, CDMA technology -- Research, Wireless technology, Code Division Multiple Access technology, Business, Computers, Electronics, Electronics and electrical industries
Abstract

The novel analytical expressions for 'blind' space-time beamformer's nonasymptotic output SINR of Wong, Lok, Lehnert, and Zoltowski (WLLZ) are derived. An increase in the number of despread 'I + N' delay subsegments in estimating the 'I + N' despread space-time data-covariance matrix would alleviate the breakdown of WLLZ.

Published
2005

2. Quasi-fluid-mechanics-based Quasi-Bayesian Cramer-Rao bounds for deformed towed-array direction finding

Author

Tichavsky, Petr and Wong, Kainam Thomas

Subjects
Arrays (Data structures) -- Analysis, Signal processing -- Analysis, Acoustics research, Digital signal processor, Business, Computers, Electronics, Electronics and electrical industries
Abstract

An existing literature gap in deformed towed-array Direction-of Arrival (DOA)-estimation performance analysis is presented. The new hybrid-CRB expressions herein derived are numerically more stable than those in the current literature.

Published
2004

3. Near-field/far-field azimuth and elevation angle estimation using a single vector hydrophone

Author

Tichavsky, Petr, Wong, Kainam Thomas, and Zoltowski, Michael D.

Subjects
Signal processing -- Research, Sonar systems -- Research, Acoustical engineering -- Research, Phased array antennas -- Research, Hydrophone -- Research, Business, Computers, Electronics, Electronics and electrical industries
Abstract

An underwater acoustic eigenstructure ESPRIT-based algorithm is presented, which produces closed-form direction-of-arrival (DOA) estimates using a single vector hydrophone. New Cramer-Rao bounds (CRB) are derived, for vector hydrophone constructions of arrival angle estimates for the incident uncorrelated sinusoidal siggnals corrupted by additive noise.

Published
2001

4. Closed-form eigenstructure-based direction finding using arbitrary but identical subarrays on a sparse uniform Cartesian array grid

Author

Zoltowski, Michael D. and Wong, Kainam Thomas

Subjects
Antenna arrays -- Research, Array processors -- Research, Electromagnetic waves -- Polarization, Estimation theory -- Research, Mobile communication systems -- Research, Radio direction finders -- Research, Sensors -- Analysis, Signal processing -- Research, Business, Computers, Electronics, Electronics and electrical industries
Abstract

Research into radio direction finding using identical subarrays on a Cartesian grid is presented. The algorithm presented is shown to improve and simplify the earlier disambiguation procedures published by the authors.

Published
2000

5. Root-MUSIC-based-Azimuth-elevation angle-of-arrival estimation with uniformly spaced but arbitrarily oriented velocity hydrophones

Author

Wong, Kainam Thomas and Zoltowski, Michael D.

Subjects
Signal processing -- Research, Underwater acoustics -- Research, Hydrophone -- Usage, Sonar systems -- Usage, Business, Computers, Electronics, Electronics and electrical industries
Abstract

The authors examine novel applications of velocity hydrophones for using in underwater acoustics . Topics include array signal processing, sonar tracking, and estimation of direction of arrival.

Published
1999

12. ESPRIT-based 2-D direction finding with a sparse uniform array of electromagnetic vector sensors

Author

Zoltowski, Michael D. and Wong, Kainam Thomas

Subjects
Array processors -- Research, Electromagnetic waves -- Polarization, Estimation theory -- Research, Mobile communication systems -- Research, Radar systems -- Antennas, Radio direction finders -- Research, Sensors -- Analysis, Signal processing -- Research, Business, Computers, Electronics, Electronics and electrical industries
Abstract

Research into two-dimensional angle of arrival estimation using electromagnetic sensors is presented. Simulations are used to demonstrate the improvements in wireless and radar communications achievable with this technique.

Published
2000

13. The Acoustic Vector-Sensor's Near-Field Array-Manifold.

Author

Yue Ivan Wu, Wong, Kainam Thomas, and Siu-Kit Lau

Subjects
*ESTIMATION theory, *UNDERWATER acoustics, *SOUND, *SIGNAL processing, *RESEARCH
Abstract

The acoustic vector-sensor is a practical and versatile sound-measurement system, for applications in-room, open-air, or underwater. Its far-field measurement model has been introduced into signal processing over a decade ago; and many direction-finding algorithms have since been developed for acoustic vector-sensors, but only for far-field sources. Missing in the literature is a near-field measurement model for the acoustic vector-sensor. This correspondence fills this literature gap. [ABSTRACT FROM AUTHOR]

Published
2010
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