Paper Abstract and Keywords |
Presentation |
2009-05-28 14:45
Frequency Domain IQ Imbalance Estimation Scheme in the Presence of DC Offset and Frequency Offset Mamiko Inamori, Shuzo Takayama, Yukitoshi Sanada (Keio Univ.) SR2009-6 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Direct conversion receivers in orthogonal frequency division multiplexing (OFDM) systems suffer from direct current (DC) offset, frequency offset, and IQ imbalance.
We have proposed an IQ imbalance estimation scheme in the presence of DC offset and frequency offset, which uses preamble signals in the time domain.
In this scheme, the DC offset is eliminated by a differential filter.
However, the accuracy of IQ imbalance estimation is deteriorated when the frequency offset is small.
To overcome this problem, a new IQ imbalance estimation scheme in the frequency domain has been proposed in this paper.
The IQ imbalance is estimated with pilot subcarriers.
Numerical results obtained through computer simulation show that estimation accuracy and bit error rate (BER) performance can be improved even if the frequency offset is small. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Direct Conversion / OFDM / DC Offset / Frequency Offset / IQ Imbalance / Pilot Symbols / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 61, SR2009-6, pp. 35-42, May 2009. |
Paper # |
SR2009-6 |
Date of Issue |
2009-05-21 (SR) |
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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SR2009-6 |
Conference Information |
Committee |
SR |
Conference Date |
2009-05-28 - 2009-05-29 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Niigata Univ |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Cognitive/Software radio and international workshop |
Paper Information |
Registration To |
SR |
Conference Code |
2009-05-SR |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Frequency Domain IQ Imbalance Estimation Scheme in the Presence of DC Offset and Frequency Offset |
Sub Title (in English) |
|
Keyword(1) |
Direct Conversion |
Keyword(2) |
OFDM |
Keyword(3) |
DC Offset |
Keyword(4) |
Frequency Offset |
Keyword(5) |
IQ Imbalance |
Keyword(6) |
Pilot Symbols |
Keyword(7) |
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Keyword(8) |
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1st Author's Name |
Mamiko Inamori |
1st Author's Affiliation |
Keio University (Keio Univ.) |
2nd Author's Name |
Shuzo Takayama |
2nd Author's Affiliation |
Keio University (Keio Univ.) |
3rd Author's Name |
Yukitoshi Sanada |
3rd Author's Affiliation |
Keio University (Keio Univ.) |
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Speaker |
Author-1 |
Date Time |
2009-05-28 14:45:00 |
Presentation Time |
25 minutes |
Registration for |
SR |
Paper # |
SR2009-6 |
Volume (vol) |
vol.109 |
Number (no) |
no.61 |
Page |
pp.35-42 |
#Pages |
8 |
Date of Issue |
2009-05-21 (SR) |
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