• Publications
  • Influence
Distributed source modeling and direction-of-arrival estimation techniques
TLDR
Parametric and nonparametric models are proposed, and estimation methods are considered under these models. Expand
  • 78
  • 2
Two hybrid positioning system design techniques with lighting LEDs and ad-hoc wireless network
  • Y. Lee, M. Kavehrad
  • Computer Science
  • IEEE Transactions on Consumer Electronics
  • 1 November 2012
TLDR
Two design techniques for more accurate and convenient hybrid positioning system with visible light communication (VLC) and ad-hoc wireless network infrastructure are proposed, in order to overcome the problems of high estimation error, high cost, and limited service range of conventional positioning techniques. Expand
  • 63
  • 1
Estimation of distributed elevation and azimuth angles using linear arrays
TLDR
In this paper, we address estimation of the elevation and azimuth angles of distributed sources based on the proposed distributed source modeling in the 3-dimensional space. Expand
  • 11
  • 1
Throughput Analysis of the Bifurcated Input-Queued ATM Switch
TLDR
We propose a bifurcated (or multiple) input-queued ATM switch in which a buffer for each input port is divided into multiple (m) buffer blocks, for enhancement of the limited throughput of the ordinary input-Queued switch using a single FIFO. Expand
  • 9
  • 1
Long-range indoor hybrid localization system design with visible light communications and wireless network
  • Y. Lee, M. Kavehrad
  • Computer Science
  • IEEE Photonics Society Summer Topical Meeting…
  • 9 July 2012
TLDR
An indoor hybrid localization system is realized and experimented with, using a five-hop Zigbee wireless network and visible light communications in order to improve positioning accuracy and achieve a long-range localization. Expand
  • 27
Hybrid positioning with lighting LEDs and Zigbee multihop wireless network
TLDR
A simple, accurate, secure, long-lasting, and portable hybrid positioning system is proposed and designed in this paper. Expand
  • 29
Analysis of quasi-ML multiuser detection of DS/CDMA systems in asynchronous channels
TLDR
We consider the quasi-maximum-likelihood (quasi-ML) detectors of the reverse link system that uses antenna arrays in asynchronous channels when the channel vector is time-invariant and time-varying. Expand
  • 21
  • PDF
Estimation of direction of arrival for angle-perturbed sources
  • 9
Real-time design of a smart antenna system utilizing a modified conjugate gradient method for CDMA-based mobile communications
TLDR
The proposed beamforming module utilizes a linearized CGM (conjugate gradient method) for finding the suboptimal weight vector in an adaptive manner. Expand
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