Paper Abstract and Keywords |
Presentation |
2008-01-25 09:00
MMSE channel estimation utilizing the conjugate gradient method Shigenori Kinjo (JCGA) SIP2007-162 RCS2007-165 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this report, we propose a new scheme in order to implement an MMSE channel estimator for OFDM systems.We know that the time domain least squares method can be applied for highly accurate impulse response estimation by using a time domain long preamble of an OFDM frame.
On the other hand, the impulse response estimation based on the MMSE criterion can achieve superior channel estimation in low SNR conditions; however, it requires prior information such as a covariance matrix of the channel, and the computational complexity for inverse matrix calculation becomes large. In order to overcome these implementation issues, we propose to estimate the statistical values based on the observed information of the channel. In addition, we show that we can suppress the increase of the computational complexity for the matrix inverse calculation by applying the conjugate gradient method while achieving the same performance with the ideal MMSE approach. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
OFDM systems / Least squares method / MMSE channel estimation / Conjugate gradient method / Channel estimation / / / |
Reference Info. |
IEICE Tech. Rep., vol. 107, no. 439, SIP2007-162, pp. 27-32, Jan. 2008. |
Paper # |
SIP2007-162 |
Date of Issue |
2008-01-18 (SIP, RCS) |
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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SIP2007-162 RCS2007-165 |
Conference Information |
Committee |
RCS SIP |
Conference Date |
2008-01-24 - 2008-01-25 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Hiroshima City Uni. |
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(See Japanese page) |
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Paper Information |
Registration To |
SIP |
Conference Code |
2008-01-RCS-SIP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
MMSE channel estimation utilizing the conjugate gradient method |
Sub Title (in English) |
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Keyword(1) |
OFDM systems |
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Least squares method |
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MMSE channel estimation |
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Conjugate gradient method |
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Channel estimation |
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1st Author's Name |
Shigenori Kinjo |
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Japan Coast Guard Academy (JCGA) |
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Speaker |
Author-1 |
Date Time |
2008-01-25 09:00:00 |
Presentation Time |
25 minutes |
Registration for |
SIP |
Paper # |
SIP2007-162, RCS2007-165 |
Volume (vol) |
vol.107 |
Number (no) |
no.439(SIP), no.441(RCS) |
Page |
pp.27-32 |
#Pages |
6 |
Date of Issue |
2008-01-18 (SIP, RCS) |
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