UWB joint TOA and DOA estimation

Lagunas, Eva; Nájar, Montse; Navarro, Mònica

doi:10.1109/icuwb.2009.5288794

Cited by 20 publications

(8 citation statements)

References 13 publications

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“…In particular it is used the CM1 Residential LOS channel model. The spatial dependency on the angle of arrival is introduced as in [9]- [12]. All simulations are given for 100 independent channel realizations.…”

Section: B Joint Toa and Doa Estimationmentioning

confidence: 99%

“…In [8] is considered the estimation of AOA based on temporal delays but suffers from constraints associated with sampling requirements. In a previous work, the authors exploited the fact that the differences in arrival times of an incoming signal at different antenna elements contain the angle information for a known array geometry [9]. The idea of working in the frequency domain was first introduced by the authors in [10] and applied to UWB technology in [11].…”

Section: Introductionmentioning

confidence: 99%

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Joint TOA and DOA estimation compliant with IEEE 802.15.4a Standard

Lagunas

Nájar

Navarro

2010

IEEE 5th International Symposium on Wireless Pervasive Computing 2010

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Section: B Joint Toa and Doa Estimationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Joint TOA and DOA estimation compliant with IEEE 802.15.4a Standard

Lagunas

Nájar

Navarro

2010

IEEE 5th International Symposium on Wireless Pervasive Computing 2010

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“…a receiver equipped with an antenna array, such as a uniform linear array (ULA) or a uniform circular array (UCA). In [5], for example, joint estimation is performed by calculating a two dimensional power delay-angle spectrum within the frequency domain. In [6], a frequency domain approach is also adopted for the joint estimation of TOA and AOA.…”

Section: Introduction and Relation To Prior Workmentioning

confidence: 99%

A novel ML based joint TOA and AOA estimator for IR-UWB systems

Shang

Champagne

Psaromiligkos

2013

2013 IEEE International Conference on Acoustics, Speech and Signal Processing

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A novel joint TOA and AOA estimator is proposed for impulse radio Ultra-Wideband (IR-UWB) systems, in which a uniform linear array of antennas is employed at the receiver. The proposed method consists of two steps: (1) coarse estimation of the TOA and the average power delay profile; (2) joint TOA refinement and AOA estimation by maximization of a novel log likelihood function (LLF) using the coarse estimates from the first step. The derivation of the LLF is based on an original approach in which the pulse image from the primary path is modeled as a deterministic component while the superposition of the images from the secondary paths is modeled as a Gaussian random process. In addition, a special gating mechanism is used to characterize the secondary paths, thereby leading to a previously unknown form of the LLF in step (2). According to simulation experiments based on standard UWB channel models, our approach exhibits superior performance to that of a competing scheme from the recent literature.

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“…Thus there are intensive research on applying AOA estimation technology to UWB signal lately [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

AOA estimation for coexisting UWB signals with multipath channels

Liu

Hsuan

2014

2014 International Conference on Telecommunications and Multimedia (TEMU)

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The applications of location-based service (LBS) grow rapidly and draw significant research attention recently. As the advance of localization technology, not only the LBS can be applied outdoors but also in indoor environments with abundant multipath channels. Angle-of-Arrival (AOA) estimation is a vital technology for signal source localization; however, its accuracy is significantly affected by multipath signal propagation. Ultra-Wideband (UWB) signal as one of promising short-range communication technologies has been used in signal localization and shown excellent performance. Yet rare works investigate the scenario that several UWB signal sources coexisting in an environment. This work considers AOA estimation for coexisting UWB signal sources in an environment with multipath channels. An antenna array is designed for such an environment, which can classify signals and estimate the AOA of their corresponding shortest path based on received signals. Feasibility and performance of the proposed method are verified by computer simulation results.

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UWB joint TOA and DOA estimation

Cited by 20 publications

References 13 publications

Joint TOA and DOA estimation compliant with IEEE 802.15.4a Standard

Joint TOA and DOA estimation compliant with IEEE 802.15.4a Standard

A novel ML based joint TOA and AOA estimator for IR-UWB systems

AOA estimation for coexisting UWB signals with multipath channels

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