Presentation 1993/8/26
Computational carrier regeneration for low earth-orbital satellite communitation systems
Yasushi Uno, Masaaki Katayama, Takaya Yamazato, Akira Ogawa,
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Abstract(in English) In low earth-orbital satellite communication systems,signals are affected Doppler shift whose value is large and rapidly changing. In this paper,we examine a method of carrier regeneration and the performance of a block demodulator when the signals are affected by Doppler shift.The carrier phase estimated by the block demodulator contains erroneous phase jumps caused by noise,and these phase jumps bring serious degradation in the performance of the block demodulator.We thus propose a new strategy to remove these erroneous phase jumps and compute the error rate performance of a QPSK signal with this strategy by computer simulation.As the results,it is shown that the proposed strategy can remove the erroneous phase jumps extremely and gives us good performance even though the time derivative of Doppler shift is large,where conventional block demodulators are not applicable.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) low earth-orbital satellite / Doppler shift / block demodulator / carrier regeneration / phase jump
Paper # SAT93-21,IN93-23,SST93-21
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Committee SAT
Conference Date 1993/8/26(1days)
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Registration To Satellite Telecommunications (SAT)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Computational carrier regeneration for low earth-orbital satellite communitation systems
Sub Title (in English)
Keyword(1) low earth-orbital satellite
Keyword(2) Doppler shift
Keyword(3) block demodulator
Keyword(4) carrier regeneration
Keyword(5) phase jump
1st Author's Name Yasushi Uno
1st Author's Affiliation Department of Information Electronics,School of Engineering,Nagoya University()
2nd Author's Name Masaaki Katayama
2nd Author's Affiliation Department of Information Electronics,School of Engineering,Nagoya University
3rd Author's Name Takaya Yamazato
3rd Author's Affiliation Department of Information Electronics,School of Engineering,Nagoya University
4th Author's Name Akira Ogawa
4th Author's Affiliation Department of Information Electronics,School of Engineering,Nagoya University
Date 1993/8/26
Paper # SAT93-21,IN93-23,SST93-21
Volume (vol) vol.93
Number (no) 193
Page pp.pp.-
#Pages 6
Date of Issue