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| Paper Abstract and Keywords | ||
| Presentation | 2017-11-08 10:50 Effects of Channel Covariance Estimation Error on Joint Maximum A Posteriori Estimation of Channel and Interference Power for OFDM Transmission Masahiro Kudo, Tomoaki Ohtsuki (Keio Univ.)  RCS2017-208 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Superposed multicarrier transmission has been proposed as a technique to improve frequency utilization efficiency. In this scheme, it is possible to narrow the total required bandwidth by sharing a part of the frequency band of each communication signal. However, since it is affected by interference from the communication signal sharing the same frequency bands, its performance deteriorates. To reduce the influence of interference, an error correction code is effective, but it is necessary to get information about interference signal (power, position). We propose the scheme using the joint maximum a posteriori estimation of channel and interference power. Although the scheme achieves excellent estimation accuracy, channel covariance is necessary for estimation. Conventionally, we assumed that channel covariance is the known information. In this paper, we evaluate the influence of the channel covariance estimation error with using the scheme which is the joint maximum a posteriori estimation of channel and interference signal power. In the estimation of the channel covariance, we derive from using the theoretical formula based on the estimated value of the channel. When we derive three estimation values (channel, interference signal power, channel covariance), the equation to estimate them is an implicit function. So we estimate iteratively and improve accuracy. Through computer simulation, we compare the effect on channel and interference signal power estimation accuracy with known case. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | OFDM / LLR / MAP / channel estimation / covariance / interference signal power estimation / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 284, RCS2017-208, pp. 23-28, Nov. 2017. | |
| Paper # | RCS2017-208 | |
| Date of Issue | 2017-11-01 (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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | RCS2017-208 |
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| Conference Information | |
| Committee | AP RCS |
| Conference Date | 2017-11-08 - 2017-11-10 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukuoka University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2017-11-AP-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effects of Channel Covariance Estimation Error on Joint Maximum A Posteriori Estimation of Channel and Interference Power for OFDM Transmission |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | LLR |
| Keyword(3) | MAP |
| Keyword(4) | channel estimation |
| Keyword(5) | covariance |
| Keyword(6) | interference signal power estimation |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Masahiro Kudo |
| 1st Author's Affiliation | Keio University (Keio Univ.) |
| 2nd Author's Name | Tomoaki Ohtsuki |
| 2nd Author's Affiliation | Keio University (Keio Univ.) |
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| Speaker | 1 |
| Date Time | 2017-11-08 10:50:00 |
| Presentation Time | 25 |
| Registration for | RCS |
| Paper # | IEICE-RCS2017-208 |
| Volume (vol) | IEICE-117 |
| Number (no) | no.284 |
| Page | pp.23-28 |
| #Pages | IEICE-6 |
| Date of Issue | IEICE-RCS-2017-11-01 |
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