A new position detection method using leaky coaxial cable

Nishikawa, Ken‐Ichi; Higashino, Takeshi; Tsukamoto, Katsutoshi; Komaki, Shozo

doi:10.1587/elex.5.285

Cited by 20 publications

(19 citation statements)

References 5 publications

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“…Radiating cables have been extensively used recently as part of wireless systems operating in the frequency range of UHF, such as in distributed antenna systems for in-building cellular scenarios, radio detection systems and wireless indoor positioning systems [1][2][3][4]. Because most users congregate inside buildings and stay there longer, wireless service providers are becoming more interested in delivering their services in these places.…”

Section: Introductionmentioning

confidence: 99%

Indoor Propagation Modeling for Radiating Cable Systems in the Frequency Range of 900-2500 MHZ

Seseña-Osorio¹,

Aragón‐Zavala²,

Zaldívar-Huerta³

et al. 2013

PIER B

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Abstract-The aim of this paper is to propose and evaluate a semiempirical propagation modeling for radiating cable used in indoor environments. This propagation modeling takes into consideration propagation mechanisms such as reflections, penetration loss and cable termination that result from a particular environment, as well as specific cable paths that actual propagation models for radiating cable systems have not considered. The proposed modeling is carried out using three different propagation models and has been experimentally validated by sets of measurements performed in a university building in the frequency range from 900 MHz to 2.5 GHz. A careful selection of the data sets validates the robustness of the proposed model. The results show a mean of the error less than 1 dB while the standard deviation is between 2.2 dB and 4.6 dB in all cases. To the best of our knowledge, this is the first time such a robust modeling for radiating cable operating between 900 MHz to 2.5 GHz has been presented.

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Section: Introductionmentioning

confidence: 99%

Indoor Propagation Modeling for Radiating Cable Systems in the Frequency Range of 900-2500 MHZ

Seseña-Osorio¹,

Aragón‐Zavala²,

Zaldívar-Huerta³

et al. 2013

PIER B

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“…In recent years, new applications for LCXs appeared: indoor positioning and navigation. Methods like time of arrival (TOA) method can be used, if suitable equipment is installed [1]. In contrary to this the WIPoS (wireless indoor positioning system) research project focus on a positioning detection system, which simply uses the measured RX level values, which were already available at most RF (radio frequency) systems.…”

Section: Introductionmentioning

confidence: 99%

First results of a leaky coaxial cable prototype for indoor positioning

Engelbrecht

Collmann

Birkel

et al. 2011

2011 Wireless Telecommunications Symposium (WTS)

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In the last years indoor positioning is getting more and more important for industrial and commercial usage. Progressive approaches are developed to use leaky coaxial cables (LCX) not only for radio coverage but also for indoor navigation, too. Here latest results of the WIPoS project are shown, which focus on indoor positioning based on LCX measurements applying RF fingerprinting. With RF fingerprinting the received signal power levels are measured at equidistant positions and are stored in a radio map. An increase of the localization accuracy is achievable by reducing the power level fluctuations measured at the LCX cable ends, which were used for RF fingerprinting. Several averaging algorithms like averaging by time, place, antenna orientation, RF channel bandwidth and combinations of them had been applied for smoothing the power level fluctuations. But the achievable improvement on the indoor positioning accuracy was still insufficient for practical applications. Therefore the different effects leading to receive power fluctuations had been extracted and are explained in this paper. Based on these investigations the results of the first LCX prototype are presented.

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“…But two kinds of RF-band and two LCXs are required. And our previous position detection methods [3][4] use LCX. In [3], position detection method uses reflection at end of LCX.…”

Section: Introductionmentioning

confidence: 99%

“…And our previous position detection methods [3][4] use LCX. In [3], position detection method uses reflection at end of LCX. But time synchronization between LCX and mobile terminal is needed, because method use propagation time about two propagation path.…”

Section: Introductionmentioning

confidence: 99%

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Two dimensional position detection method using bi-directional leaky coaxial cable based on TDOA

Nishikawa

Higashino

Tsukamoto

et al. 2009

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications

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Position detection of wireless terminal tends to be important technology in wireless communication system. Demand for position detection is increasing. This paper proposes position detection method using bi-directional LCX (Leaky CoaXial cable). Due to bi-directional and the reflection at end of LCX on purpose, proposed method makes four propagation pathes. Proposed system can detect two dimensional position using the differences of four propagation times. This paper describes the equations for position detection and optimal arrangement about slots.

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A new position detection method using leaky coaxial cable

Cited by 20 publications

References 5 publications

Indoor Propagation Modeling for Radiating Cable Systems in the Frequency Range of 900-2500 MHZ

Indoor Propagation Modeling for Radiating Cable Systems in the Frequency Range of 900-2500 MHZ

First results of a leaky coaxial cable prototype for indoor positioning

Two dimensional position detection method using bi-directional leaky coaxial cable based on TDOA

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