Two-Dimensional Target Location Estimation Technique Using Leaky Coaxial Cables

Inomata, Kenji; Hirai, Takashi; Yamaguchi, Yoshio; Yamada, Hiroyoshi

doi:10.1093/ietcom/e91-b.3.878

Cited by 7 publications

(6 citation statements)

References 10 publications

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“…Inomata et al [ 23 ] presented interesting details on passive detection of persons using a pair of radiating cables. In this solution, a sounding signal was radiated from one leaky feeder and received by the second cable, which was parallel to the first one.…”

Section: Related Workmentioning

confidence: 99%

Position Estimation in Corridors Along the Coupled Mode of Radiating Cables

Blaszkiewicz

Sadowski

Stefański

2020

Sensors

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Radiating cables are mostly used to provide radio communication in tunnels or corridors, but they can also be used to estimate the position of a mobile terminal along the cable. In this paper, a measuring receiver’s position was estimated by measuring the difference in the direct signal’s reception time, which was generated by a transmitter connected to one end of the radiating cable, and the delayed signal retransmitted from another end. During tests, a relatively narrowband (23 MHz) signal was used in the unlicensed band (2.4 GHz) and 50 m long coupled mode radiating cable. The cable was installed along a corridor in the office building. Measurement results used different equipment configurations (i.e., return signal only amplified or amplified and frequency-shifted), which presented possible sources of errors.

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Section: Related Workmentioning

confidence: 99%

Position Estimation in Corridors Along the Coupled Mode of Radiating Cables

Blaszkiewicz

Sadowski

Stefański

2020

Sensors

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“…In recent years, indoor position detection using LCX (Leaky CoXial cable) antenna has been studied as a method to reduce the number of required access points. LCX is typically used for compensating the radio dead zone [6]. In [6], base station monitors frequency response between transmitting/receiving antennas of LCX, then, channel impulse response is obtained by using IFFT (Inverse Fast Fourier Transform).…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of the MUSIC-based Wireless Position Location using LCX antenna at 5GHz band

Shirai

Higashino

Okada

2019

2019 19th International Symposium on Communications and Information Technologies (ISCIT)

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In recent years, a wireless system using LCX (Leaky CoXial cable) antenna has been studied as a method of locating a wireless terminal in indoor. As typical method, the IFFT (Inverse Fast Fourier Transform) of the channel frequency response is available for obtaining channel impulse response, then, local position can be estimated based on the TDOA (Time Difference Of Arrival). Although spacial resolution of positioning is limited by measured bandwidth of frequency response, the MUSIC (MUltiple SIgnal Classification) algorithm has been proposed to overcome its limitation [1], [2]. Previous study [3] employed the MUSIC algorithm in 2 by 2 LCX antenna system at 2.4 GHz band, and its precision has been evaluated experimentally. Since the LCX antenna has newly developed for 5 GHz, positioning performance at 5GHz band has evaluated in this paper. After the channel response was measured in the radio anechoic chamber, and its precision is experimentally evaluated.

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“…However, it is impossible to use GPS underground because GPS signal cannot be received due to obstacles. Therefore, many position detection methods to use at narrow area have been proposed [3,4,5]. A method in [3] is a method using wireless sensor nodes.…”

Section: Introductionmentioning

confidence: 99%

“…At the underground, the LCX(Leaky CoaXial cable) is considered as a preferable infrastructure, because LCX has already been constructed in the underground shopping center. Another position detection methods [4,5] use LCX. In [4], LCX performs as an intruder sensor by using two parallel LCXs are located.…”

Section: Introductionmentioning

confidence: 99%

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A new position detection method using leaky coaxial cable

Nishikawa

Higashino

Tsukamoto

et al. 2008

IEICE Electron. Express

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Position detection services tend to be important in ubiquitous wireless communication systems. A new position detection method which utilizes an LCX (Leaky CoaXial cable) is proposed. Proposed method is based on a TOA (time of arrival) of both direct wave and reflected wave from the end of LCX. Position detection error is experimentally investigated. Keywords: LCX, position detection, TOA Classification: Microwave and millimeter wave devices, circuits, and systems References[1] J. Kwon, B. Dundar, and P. Varaiya, "Hybrid algorithm for indoor positioning using wireless LAN," VTC2004-Fall, vol. 7, pp. 4625-4629, Sept. 2004 M. Kawabata, M. Aso, T. Saikawa, and T. Hattori, "Performance evaluation of TDOA system based on the maximum Likelihood location estimation in cellular system," IEICE Trans.

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Two-Dimensional Target Location Estimation Technique Using Leaky Coaxial Cables

Cited by 7 publications

References 10 publications

Position Estimation in Corridors Along the Coupled Mode of Radiating Cables

Position Estimation in Corridors Along the Coupled Mode of Radiating Cables

An Experimental Investigation of the MUSIC-based Wireless Position Location using LCX antenna at 5GHz band

A new position detection method using leaky coaxial cable

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