Paper Abstract and Keywords |
Presentation |
2008-03-07 11:15
On Resolution for Inter-Carrier Interference in OFDM Based on ICA Vithaya Sayvisith, Tetsuya Kimura, Fuminari Nakagawa, Hiroshi Shiratsuchi, Naomi Haratani, Hiromu Gotanda (Kinki Univ.) CAS2007-129 SIP2007-204 CS2007-94 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Carrier frequency offset (CFO) causes inter-carrier interference (ICI) between the sub-carriers in Orthogonal Frequency Division Multiplexing (OFDM) systems, which degrades the system performance.
In this paper, a new approach based on independent component analysis (ICA) is proposed to cancel the ICI, to estimate the flat-fading sub-channel and to restore the transmitted symbols, by using only the received symbols.
First, the ICI problem is formulated as an ICA model under the flat-fading sub-channels.
Next, the permutation and the scaling indeterminacy inherent in ICA are resolved. Then the CFO is estimated from ICA results.
If the flat-fading coefficient takes a phase within ±π/4 at every sub-carrier under QAM type modulation, the coefficient can be estimated by use of the fact that, after CFO cancellation, the receive symbols at each sub-carrier are almost uniformly changed from the transmitted symbols in proportion with the magnitude and the phase of the coefficient.
These results are utilized to restore the unknown transmitted symbols.
Finally, the proposed method is verified for 16QAM by several simulations. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
OFDM / CFO / ICI / Fading channel / Independent Component Analysis / / / |
Reference Info. |
IEICE Tech. Rep., vol. 107, no. 529, SIP2007-204, pp. 23-28, March 2008. |
Paper # |
SIP2007-204 |
Date of Issue |
2008-02-29 (CAS, SIP, CS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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CAS2007-129 SIP2007-204 CS2007-94 |
Conference Information |
Committee |
CS SIP CAS |
Conference Date |
2008-03-06 - 2008-03-07 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Yamaguchi University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Network processors, signal processing for communications, wireless LAN/PAN, etc. |
Paper Information |
Registration To |
SIP |
Conference Code |
2008-03-CS-SIP-CAS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
On Resolution for Inter-Carrier Interference in OFDM Based on ICA |
Sub Title (in English) |
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Keyword(1) |
OFDM |
Keyword(2) |
CFO |
Keyword(3) |
ICI |
Keyword(4) |
Fading channel |
Keyword(5) |
Independent Component Analysis |
Keyword(6) |
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Keyword(7) |
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Keyword(8) |
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1st Author's Name |
Vithaya Sayvisith |
1st Author's Affiliation |
Kinki Univesity (Kinki Univ.) |
2nd Author's Name |
Tetsuya Kimura |
2nd Author's Affiliation |
Kinki Univesity (Kinki Univ.) |
3rd Author's Name |
Fuminari Nakagawa |
3rd Author's Affiliation |
Kinki Univesity (Kinki Univ.) |
4th Author's Name |
Hiroshi Shiratsuchi |
4th Author's Affiliation |
Kinki Univesity (Kinki Univ.) |
5th Author's Name |
Naomi Haratani |
5th Author's Affiliation |
Kinki Univesity (Kinki Univ.) |
6th Author's Name |
Hiromu Gotanda |
6th Author's Affiliation |
Kinki Univesity (Kinki Univ.) |
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Speaker |
Author-1 |
Date Time |
2008-03-07 11:15:00 |
Presentation Time |
25 minutes |
Registration for |
SIP |
Paper # |
CAS2007-129, SIP2007-204, CS2007-94 |
Volume (vol) |
vol.107 |
Number (no) |
no.527(CAS), no.529(SIP), no.531(CS) |
Page |
pp.23-28 |
#Pages |
6 |
Date of Issue |
2008-02-29 (CAS, SIP, CS) |
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