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TPMS Interference Suppression Based on Beamforming Technology

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  • Cheol Park
  • Seong-min Kim
  • Suk-seung Hwang

Abstract

The Tire Pressure Monitoring System (TPMS) displays the state of a tire on a display to inform a driver of the relevant information, by means of a sensor installed on the tire of the vehicle. When the data measured from the tire are wirelessly transmitted to a receiving antenna located in the center of the vehicle, the exact transmission of data is affected by the interference from various external electronic and electrical devices. In this paper, we suggest a minimum variance distortionless response (MVDR) beamformer based on the angle-of-arrival (AOA) vector for suppressing external interference and receiving accurate data. Although the MVDR beamformer effectively suppresses the interference, it has high computational complexity because of the calculation of an autocorrelation matrix. In order to address this issue, we also suggest a generalized sidelobe canceler (GSC) beamformer which does not have the same performance of the interference suppression to MVDR but also has low computational complexity. Since the signal from each tire can cause interference to others, we consider utilizing a unique Gold Code to each tire to minimize intertire interference and reduce power consumption of a battery installed in each tire.

Suggested Citation

  • Cheol Park & Seong-min Kim & Suk-seung Hwang, 2013. "TPMS Interference Suppression Based on Beamforming Technology," International Journal of Distributed Sensor Networks, , vol. 9(11), pages 681386-6813, November.
    • Handle: RePEc:sae:intdis:v:9:y:2013:i:11:p:681386
    DOI: 10.1155/2013/681386
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