Paper Abstract and Keywords |
Presentation |
2014-04-18 14:25
Subcarrier Smoothing Calibration on multiuser-MIMO-OFDM Systems with Implicit Feedback Hayato Fukuzono, Tomoki Murakami, Riichi Kudo, Yasushi Takatori, Masato Mizoguchi (NTT) RCS2014-16 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
It is necessary to calibrate uplink channel state information (CSI) estimated for transmit beamforming in frequency domain on multiuser multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems with implicit feedback (IFB). Calibration coefficients, by which uplink CSI is multiplied in the calibration, have some frequency correlation, because they depend on circuitry responses. In this paper, we propose subcarrier smoothing calibration, a scheme in which calibration coefficients are smoothed in frequency domain, to
improve calibration accuracy. In order to evaluate the effect of the proposed scheme for practical circuitry responses, we measure frequency responses of actual, commercial radio frequency (RF) transceiver circuits, and employ them for computer simulations. Simulation results show that the proposed scheme improves signal to interference plus
noise power ratio (SINR) compared with a conventional calibration scheme without the smoothing. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
multiuser MIMO / OFDM / implicit feedback / calibration / subcarrier smoothing / circuitry response / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, no. 8, RCS2014-16, pp. 85-90, April 2014. |
Paper # |
RCS2014-16 |
Date of Issue |
2014-04-10 (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 |
RCS2014-16 |
Conference Information |
Committee |
RCS |
Conference Date |
2014-04-17 - 2014-04-18 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Nagoya Institute of Technology |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Radio Access Technologies, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2014-04-RCS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Subcarrier Smoothing Calibration on multiuser-MIMO-OFDM Systems with Implicit Feedback |
Sub Title (in English) |
|
Keyword(1) |
multiuser MIMO |
Keyword(2) |
OFDM |
Keyword(3) |
implicit feedback |
Keyword(4) |
calibration |
Keyword(5) |
subcarrier smoothing |
Keyword(6) |
circuitry response |
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Hayato Fukuzono |
1st Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
2nd Author's Name |
Tomoki Murakami |
2nd Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
3rd Author's Name |
Riichi Kudo |
3rd Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
4th Author's Name |
Yasushi Takatori |
4th Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
5th Author's Name |
Masato Mizoguchi |
5th Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
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 |
2014-04-18 14:25:00 |
Presentation Time |
25 minutes |
Registration for |
RCS |
Paper # |
RCS2014-16 |
Volume (vol) |
vol.114 |
Number (no) |
no.8 |
Page |
pp.85-90 |
#Pages |
6 |
Date of Issue |
2014-04-10 (RCS) |
|