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Paper Abstract and Keywords
Presentation 2004-08-27 11:00
A Study on IQ separated spreading for OFCDM
Masaru Fukuoka (Panasonic Mobile Communications Kanazawa R&D Lab. Co., Ltd.), Isamu Yoshii (Panasonic European Labs), Kenichi Miyoshi (Matsushita Electric Industrial Co., Ltd.)
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes an IQ separated OFCDM spreading method , which allocates chips in time domain and frequency domain separately after dividing the spread symbols into I-channels and Q-channels. The proposed method achieves frequency diversity gain while reducing the performance degradation due to the loss of orthogonality between the spreading codes for frequency selective channels. Moreover, this paper shows an adaptive allocation method depending on the multipath environment and the modulation scheme for the time and frequency spreading. Computer simulations show that the presented method outperforms conventional 2D spreading with prioritized time spreading for OFCDM.
Keyword (in Japanese) (See Japanese page) 
(in English) OFCDM / IQ separated spreading / Diversity / Prioritized time domain spreading / / / /  
Reference Info. IEICE Tech. Rep., vol. 104, no. 258, RCS2004-141, pp. 31-36, Aug. 2004.
Paper # RCS2004-141 
Date of Issue 2004-08-20 (RCS) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee RCS  
Conference Date 2004-08-26 - 2004-08-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2004-08-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on IQ separated spreading for OFCDM 
Sub Title (in English)  
Keyword(1) OFCDM  
Keyword(2) IQ separated spreading  
Keyword(3) Diversity  
Keyword(4) Prioritized time domain spreading  
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1st Author's Name Masaru Fukuoka  
1st Author's Affiliation Panasonic Mobile Communications Kanazawa R&D Lab. Co., Ltd. (Panasonic Mobile Communications Kanazawa R&D Lab. Co., Ltd.)
2nd Author's Name Isamu Yoshii  
2nd Author's Affiliation Panasonic European Laboratories GmbH (Panasonic European Labs)
3rd Author's Name Kenichi Miyoshi  
3rd Author's Affiliation Matsushita Electric Industrial Co., Ltd. (Matsushita Electric Industrial Co., Ltd.)
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Speaker Author-1 
Date Time 2004-08-27 11:00:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2004-141 
Volume (vol) vol.104 
Number (no) no.258 
Page pp.31-36 
#Pages
Date of Issue 2004-08-20 (RCS) 


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