Presentation 1997/10/16
A Spread Spectrum-Based Subcarrier Recovery Method for Orthogonal Multi-Carrier Modulated Signal
Daichi IMAMURA, Shinsuke HARA, Norihiko MORINAGA,
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Abstract(in English) This paper proposes a new subcarrier synchronization method for OFDM signal, which is based on a periodical insertion of PN sequence in the time domain. In this system, a complex delay profile can be measured by the auto-correlation of DS/SS signal in the time domain. Then the phase of each subcarrier is synchronized using this delay profile. In the multi-carrier modulation, all delay waves may exist in the guard interval, so it is enough to observe the delay profile only in the guard interval. As a result, the proposed system achieve higher transmission efficiency. Computer simulation results show that the proposed system can achieve a smart subcarrier recovery under frequency selective Rayliegh fading.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) multi-carrier modulation / DS/SS / complex delay profile / subcarrier recovery
Paper # RCS97-113-128
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Committee RCS
Conference Date 1997/10/16(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Spread Spectrum-Based Subcarrier Recovery Method for Orthogonal Multi-Carrier Modulated Signal
Sub Title (in English)
Keyword(1) multi-carrier modulation
Keyword(2) DS/SS
Keyword(3) complex delay profile
Keyword(4) subcarrier recovery
1st Author's Name Daichi IMAMURA
1st Author's Affiliation Department of Communications Engineering, Graduate School of Engineering, Osaka University()
2nd Author's Name Shinsuke HARA
2nd Author's Affiliation Department of Communications Engineering, Graduate School of Engineering, Osaka University
3rd Author's Name Norihiko MORINAGA
3rd Author's Affiliation Department of Communications Engineering, Graduate School of Engineering, Osaka University
Date 1997/10/16
Paper # RCS97-113-128
Volume (vol) vol.97
Number (no) 322
Page pp.pp.-
#Pages 7
Date of Issue