Numerical and Experimental Study on Three-Dimensional Localization For Ultra-Wideband Impulsive Noise Sources

Soliman, Mohamed S.; Hirata, Akimasa; Morimoto, Takeshi; Kawasaki, Zen

doi:10.1163/1569393054497276

Cited by 10 publications

(13 citation statements)

References 10 publications

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“…There are many typical methods [1][2][3][4][5] for locating a source, e.g., time-of-arrival (TOA) [6,7], time difference of arrival [32], angle-of-arrival (AOA/DOA) [8][9][10] approach and some hybrid techniques [11,12] as shown in Table 1. Most of these methods are based on trilateration utilizing ToA, DoA, TDoA, RSS and the diverse combinations of these parameters.…”

Section: Introductionmentioning

confidence: 99%

A Novel Source Localization Scheme Based on Unitary Esprit and City Electronic Maps in Urban Environments

Song¹,

Wang²,

Hong³

et al. 2009

PIER

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Abstract-In this paper, a novel source localization scheme is proposed based on the unitary ESPRIT algorithm with back ray tracing technique and the city electronic maps. Our scheme can be summarized into two steps. First, the unitary ESPRIT algorithm is employed to estimate the angles and delays of the arrival rays radiated from the source. Second, based on the obtained information we devise a back ray tracing technique to recover the signal propagation paths according to the Geometrical Theory of Reflections and the city electronic map. After these two steps the source position can be obtained by averaging all the estimated positions. In order to minimize estimated errors caused by the Unitary ESPRIT, a valid-range selection criterion for the judgment of the validity of the estimated position data is proposed. On the other hand, we introduce a path length weighting factor to reduce the estimated errors caused by the terrain data inaccuracy. This position method can locate both the line of sight (LOS) and non-line of sight (NLOS) sources efficiently and it also can locate multi-sources simultaneously. Six simulations are carried out in three terrain scenarios. The numerical results demonstrate that our model can be applied to estimate the positions for both 2D and 3D cases. The accuracy of our model for a cell of 80 m × 45 m can reach 10 m when SNR is greater than 10 dB.

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Section: Introductionmentioning

confidence: 99%

A Novel Source Localization Scheme Based on Unitary Esprit and City Electronic Maps in Urban Environments

Song¹,

Wang²,

Hong³

et al. 2009

PIER

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“…Besides facilitating emergency safety systems to allow 911 subscriber calls, the outdoor cellular systems also accommodate proximity advertising, location sensitive billing and intelligent transport tracking systems. For the indoor channel environments, dedicated localization sensor systems have been developed that either leverage on existing indoor Wireless LAN 802.11x infrastructure or on specified Radio Frequency technology such as Ultra Wideband (UWB) [5][6][7][8][9]. These systems have been designed to provide localization information for applications such as the tracking of assets and personnel.…”

Section: Introductionmentioning

confidence: 99%

Localization of Omni-Directional Mobile Device in Multipath Environments

Seow¹,

Tan²

2008

PIER

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Abstract-This paper presents a comprehensive Non Line of Sight (NLOS) localization scheme in a multipath environment where the scatterers with smooth surfaces are aligned parallel or perpendicular to each other. It leverages on the estimation of Angle of Arrival (AOA) and Time of Arrival (TOA) of the omni-directional mobile device's signal received at the reference devices. Unlike the conventional Line of Sight (LOS) localization schemes that rely on the various mitigation techniques to mitigate the multipaths that are mistaken as the LOS signal, our proposed two step localization scheme not only utilizes the LOS path but also any one bound scattering NLOS multipath arriving at the reference devices for localization. Channel experiment coupled with simulation results in a typical multipath environment has demonstrated that our proposed localization scheme outperforms the conventional localization schemes that are coupled with their own mitigation techniques. Robustness in performance of our proposed localization scheme towards different scatterers' orientation where they are not aligned parallel or perpendicular to each other are also investigated.

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“…UWB technology is providing data rate of 110 Mbps at a distance of 10 m and 480 Mbps at a distance of 2 m, but even higher data rates are coming. A traditional UWB technology is based on single-band systems employing carrierfree communications [1][2][3][4]. Recently, orthogonal frequency-division multiplexing based UWB (UWB-OFDM) schemes were proposed in [5][6][7], in which the UWB frequency band is divided into several subbands.…”

Section: Introductionmentioning

confidence: 99%

Pilot-Free Frequency Tracking Method for Ultra-Wideband Receivers

Kim¹,

You²

2008

PIER

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Abstract-This paper suggests a pilot-free frequency tracking scheme for ultra-wideband orthogonal frequency-division multiplexing (UWB-OFDM) receivers. The proposed scheme uses a frequency-domain spreaded data symbols which is provided in the current UWB-OFDM system. Based on this property, we develop an improved frequency synchronization receiver without the use of pilot symbols. The simulation results indicate that the proposed scheme achieves much better performance than the conventional pilot-based schemes.

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Numerical and Experimental Study on Three-Dimensional Localization For Ultra-Wideband Impulsive Noise Sources

Cited by 10 publications

References 10 publications

A Novel Source Localization Scheme Based on Unitary Esprit and City Electronic Maps in Urban Environments

A Novel Source Localization Scheme Based on Unitary Esprit and City Electronic Maps in Urban Environments

Localization of Omni-Directional Mobile Device in Multipath Environments

Pilot-Free Frequency Tracking Method for Ultra-Wideband Receivers

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