Paper Abstract and Keywords |
Presentation |
2013-06-21 09:40
A Study on Extrinsic LLR of Soft-Demapper for Iterative Channel Estimation Hiroyuki Sasaki, Shinsuke Ibi, Seiichi Sampei (Osaka Univ.) RCS2013-63 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper investigates an extrinsic log likelihood ratio (LLR) of soft demapper to be conveyed to maximum textit{a-posteriori} probability (MAP) decoder under the presence of channel estimation errors.
In principle, the extrinsic LLR should obey Gaussian distribution for the sake of reducing computational complexity in the MAP decoder.
However, channel estimation errors deteriorate Gaussianity of the LLR derived by conventional definition.
In order to guarantee the Gaussianity, this paper defines alternative extrinsic LLR according to mean square error (MSE) of channel estimates.
The derivation of the proposed LLR is extended to an iterative channel estimation scenario.
We will demonstrate that the proposed extrinsic LLR is capable of improving bit error rate (BER) performances. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
OFDM / iterative channel estimation / demapper / channel code / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 113, no. 93, RCS2013-63, pp. 153-158, June 2013. |
Paper # |
RCS2013-63 |
Date of Issue |
2013-06-13 (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) |
Download PDF |
RCS2013-63 |
Conference Information |
Committee |
RCS |
Conference Date |
2013-06-20 - 2013-06-21 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Hokkaido Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2013-06-RCS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Study on Extrinsic LLR of Soft-Demapper for Iterative Channel Estimation |
Sub Title (in English) |
|
Keyword(1) |
OFDM |
Keyword(2) |
iterative channel estimation |
Keyword(3) |
demapper |
Keyword(4) |
channel code |
Keyword(5) |
|
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Hiroyuki Sasaki |
1st Author's Affiliation |
Osaka University (Osaka Univ.) |
2nd Author's Name |
Shinsuke Ibi |
2nd Author's Affiliation |
Osaka University (Osaka Univ.) |
3rd Author's Name |
Seiichi Sampei |
3rd Author's Affiliation |
Osaka University (Osaka Univ.) |
4th Author's Name |
|
4th Author's Affiliation |
() |
5th Author's Name |
|
5th Author's Affiliation |
() |
6th Author's Name |
|
6th Author's Affiliation |
() |
7th Author's Name |
|
7th Author's Affiliation |
() |
8th Author's Name |
|
8th Author's Affiliation |
() |
9th Author's Name |
|
9th Author's Affiliation |
() |
10th Author's Name |
|
10th Author's Affiliation |
() |
11th Author's Name |
|
11th Author's Affiliation |
() |
12th Author's Name |
|
12th Author's Affiliation |
() |
13th Author's Name |
|
13th Author's Affiliation |
() |
14th Author's Name |
|
14th Author's Affiliation |
() |
15th Author's Name |
|
15th Author's Affiliation |
() |
16th Author's Name |
|
16th Author's Affiliation |
() |
17th Author's Name |
|
17th Author's Affiliation |
() |
18th Author's Name |
|
18th Author's Affiliation |
() |
19th Author's Name |
|
19th Author's Affiliation |
() |
20th Author's Name |
|
20th Author's Affiliation |
() |
Speaker |
Author-1 |
Date Time |
2013-06-21 09:40:00 |
Presentation Time |
10 minutes |
Registration for |
RCS |
Paper # |
RCS2013-63 |
Volume (vol) |
vol.113 |
Number (no) |
no.93 |
Page |
pp.153-158 |
#Pages |
6 |
Date of Issue |
2013-06-13 (RCS) |
|