Presentation 2002/5/10
Considerations on Quasi-Synchronous CDMA using Cyclic Shifted M-Sequence
Satoru TAKAHASHI, Daisuke UMEHARA, Makoto KAWAI,
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Abstract(in English) Highly accurate synchronization is required to implement synchronous CDMA on satellite communications. To cope with this problem, quasi-synchronous CDMA is effective, which allows a little declination of synchronization. In this paper, we propose to apply cyclic shifted M-sequences in order to increase traffic capacity for quasi-synchronous CDMA, and consider a system configuration and its performances. Since the cyclic shifted M-sequences are generated by one M-sequence, it is difficult to distinguish each code. In order to distinguish the cyclic shifted M-sequences, we attempt to use a Pilot signal. And we propose a method how to select a Pilot signal which has constant interference and show the system performances by computer simulation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Quasi-Synchronous CDMA / M-Sequence / Pilot Signal / cross Correlation
Paper # SAT2002-12
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Committee SAT
Conference Date 2002/5/10(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) Considerations on Quasi-Synchronous CDMA using Cyclic Shifted M-Sequence
Sub Title (in English)
Keyword(1) Quasi-Synchronous CDMA
Keyword(2) M-Sequence
Keyword(3) Pilot Signal
Keyword(4) cross Correlation
1st Author's Name Satoru TAKAHASHI
1st Author's Affiliation Faculty of Engineering, Kyoto University()
2nd Author's Name Daisuke UMEHARA
2nd Author's Affiliation Graduate School of Informatics, Kyoto University
3rd Author's Name Makoto KAWAI
3rd Author's Affiliation Graduate School of Informatics, Kyoto University
Date 2002/5/10
Paper # SAT2002-12
Volume (vol) vol.102
Number (no) 51
Page pp.pp.-
#Pages 6
Date of Issue