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http://dx.doi.org/10.6109/jkiice.2010.14.3.587

Asynchronous IR-UWB ranging system  

Choi, You-Shin (광운대학교 전파공학과)
Yang, Hoon-Gee (광운대학교 전파공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.14, no.3, 2010 , pp. 587-594 More about this Journal
Abstract
In this paper, we propose an asynchronous IR-UWB ranging system based on the two-way ranging protocol. The periodic pulse sequence is used to measure a distance between two devices. At the receiver, a received signal is first transformed into a frequency-domain signal using an analog correlator bank and digital signal processing is followed in the frequency-domain. This make it possible for the system to use an ADC with a conversion speed of pulse rate. The proposed algorithm at the receiver side includes a peak detection procedure using mutipath channel compensation and matched filtering, and retransmits a pulse sequence synchronized with the detected peak. The validity of the proposed algorithm is verified from simulation results where the CM1 channel is assumed.
Keywords
IR-UWB; Asynchronous ranging; Positioning; Two-way ranging; Time of arrival;
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