Paper Abstract and Keywords |
Presentation |
2009-06-25 14:40
A study on FFT-based channel estimation in single carrier-frequency domain equalization Daiji Motokawa, Eiji Okamoto, Yasunori Iwanami (Nagoya Inst. of Tech.) RCS2009-31 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A frequency domain equalization for multipath fading is widely used for OFDM (orthogonal frequency division multiplexing) in mobile communications. However, PAPR (peak to average power ratio) of OFDM is relatively high due to noise-like signal style of multi carrier (MC) transmission. On the other hand, PAPR of single carrier (SC) transmission is lower than that of MC and the SC is often applied to uplink transmission because of less requirement of amplifier linearity. In SC, the frequency domain equalizer called SC-FDE (single carrier-frequency domain equalization) is also used as well as MC, and to raise the transmission quality, accurate channel estimation is required for it. Usually in SC-FDE, whole one frame is assigned as a pilot frame used for channel estimation, which results in lower frequency efficiency. However, when we insert sparse pilot symbols in SC in the time domain, it spreads into whole bandwidth in the frequency domain, and they cannot be extracted as reference symbols at any subcarrier. To solve this problem, we propose a sparse pilot symbol based channel estimation scheme for SC-FDE using FFT (fast Fourier transform) fading estimation in which the pilot symbols are inserted periodically in the time and frequency sub domain. Furthermore, MMSE (minimum mean square error) fading estimation and SINR (signal to interference and noise ratio) criterion-based MMSE fading equalization are proposed. These schemes improve the BER (bit error ratio) performance in the time and frequency selective fading environment. The performance improvement is evaluated through computer simulations. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
SC-FDE / FFT / PAPR / MMSE estimation / MMSE equalization with SINR criterion / / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 105, RCS2009-31, pp. 21-26, June 2009. |
Paper # |
RCS2009-31 |
Date of Issue |
2009-06-18 (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 |
RCS2009-31 |
Conference Information |
Committee |
RCS |
Conference Date |
2009-06-25 - 2009-06-26 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Nagoya University |
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 |
2009-06-RCS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A study on FFT-based channel estimation in single carrier-frequency domain equalization |
Sub Title (in English) |
|
Keyword(1) |
SC-FDE |
Keyword(2) |
FFT |
Keyword(3) |
PAPR |
Keyword(4) |
MMSE estimation |
Keyword(5) |
MMSE equalization with SINR criterion |
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Daiji Motokawa |
1st Author's Affiliation |
Graduate School of Engineering Nagoya Institute of Technology (Nagoya Inst. of Tech.) |
2nd Author's Name |
Eiji Okamoto |
2nd Author's Affiliation |
Graduate School of Engineering Nagoya Institute of Technology (Nagoya Inst. of Tech.) |
3rd Author's Name |
Yasunori Iwanami |
3rd Author's Affiliation |
Graduate School of Engineering Nagoya Institute of Technology (Nagoya Inst. of Tech.) |
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 |
2009-06-25 14:40:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2009-31 |
Volume (vol) |
vol.109 |
Number (no) |
no.105 |
Page |
pp.21-26 |
#Pages |
6 |
Date of Issue |
2009-06-18 (RCS) |
|