Presentation | 2005/2/25 A Study on Orthogonalization of Up-Link MC-CDMA Systems Atsushi NAGATE, Noboru IZUKA, Teruya FUJII, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Time-domain spreading MC-CDMA systems have been proposed for the down-link of the 4th generation mobile communication system. In the down-link high communication quality and capacity can be attained because the orthogonality among users is kept. This paper proposes a time-domain spreading MC-CDMA system for the up-link. In the proposed system, the up-link signals of users are synchronized in the time domain using a time-alignment technique so that the orthogonality among users can be kept. As a result, high communication quality and capacity can be attained in the up-link as well as the down-link. In the proposed system, the orthogonality among users is reduced by a timing synchronization error and a carrier frequency offset. In the paper, through a computer simulation, we evaluated the effect of carrier frequency offset, which causes inter-carrier interference and inter-code interference. As the result, we clarified that the proposed up-link system shows good performance while the carrier frequency offset is under 50Hz. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Mobile Communications / MC-CDMA / Time-domain Spreading / Up-link / Orthogonalization |
Paper # | WBS2004-133,A・P2004-314,RCS2004-401,MoMuC2004-184,MW2004-311 |
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Conference Information | |
Committee | MoMuC |
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Conference Date | 2005/2/25(1days) |
Place (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Mobile Multimedia Communications(MoMuC) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | A Study on Orthogonalization of Up-Link MC-CDMA Systems |
Sub Title (in English) | |
Keyword(1) | Mobile Communications |
Keyword(2) | MC-CDMA |
Keyword(3) | Time-domain Spreading |
Keyword(4) | Up-link |
Keyword(5) | Orthogonalization |
1st Author's Name | Atsushi NAGATE |
1st Author's Affiliation | Information & Communication Labs., Japan Telecom() |
2nd Author's Name | Noboru IZUKA |
2nd Author's Affiliation | Information & Communication Labs., Japan Telecom |
3rd Author's Name | Teruya FUJII |
3rd Author's Affiliation | Information & Communication Labs., Japan Telecom |
Date | 2005/2/25 |
Paper # | WBS2004-133,A・P2004-314,RCS2004-401,MoMuC2004-184,MW2004-311 |
Volume (vol) | vol.104 |
Number (no) | 683 |
Page | pp.pp.- |
#Pages | 5 |
Date of Issue |