Presentation 1998/3/18
DS/SS Predictive PN Code Tracking Loop Using Kalman Filter
Takashi SHONO, Takahiko SABA, Shinsaku MORI, Iwao SASASE,
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Abstract(in English) We present a so-called predictive PN code tracking loop(PCTL)in DS/SS communication systems on the assumption that we apply DS/SS systems to wireless communications between aircrafts and a fixed base station. The PCTL is made up of delay-estimators combining the so-called modified code tracking loop (MCTL), which is one of the DLLs, with the Kalman filter. The estimated delay-controlled device transforms the propagation delay obtained by the kalman filter to the adaptive signal and inputs this signal to the MCTL discretely through the operational circuit. The PCTL can revise the degradation in the tracking performance of the MCTL under the constraint of Doppler effects and the channel noise. The tracking performance of the PCTL is investigated compared with the MCTL by computer simulations. It is shown that our proposed system has the higher code tracking performance than the MCTL from a viewpoint of tracking jitter. In addition, it is shown that even if the MCTL can not keep delay-lock tracking our proposed system keeps delay-lock tracking.
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Keyword(in English) DS/SS communication system / code tracking / modified code tracking loop / Kalman filter
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Committee ISEC
Conference Date 1998/3/18(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) DS/SS Predictive PN Code Tracking Loop Using Kalman Filter
Sub Title (in English)
Keyword(1) DS/SS communication system
Keyword(2) code tracking
Keyword(3) modified code tracking loop
Keyword(4) Kalman filter
1st Author's Name Takashi SHONO
1st Author's Affiliation Dept.of Electrical Engineering, Keio University()
2nd Author's Name Takahiko SABA
2nd Author's Affiliation Dept.of Electrical & Computer Engineering Nagoya Institute of Technology
3rd Author's Name Shinsaku MORI
3rd Author's Affiliation Dept.of Electrical & Electronics Engineering Nippon Institute of Technology
4th Author's Name Iwao SASASE
4th Author's Affiliation Dept.of Electrical Engineering, Keio University
Date 1998/3/18
Paper #
Volume (vol) vol.97
Number (no) 611
Page pp.pp.-
#Pages 6
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