Paper Abstract and Keywords |
Presentation |
2011-12-16 12:50
CDM Based Reference Signal Structure Using Oversampling for OFDM Downlink Masahiro Tabata (Tokyo City Univ.), Teruo Kawamura (NTT DOCOMO), Hidekazu Taoka (DOCOMO Europe Labs.), Mamoru Sawahashi (Tokyo City Univ.) RCS2011-255 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper proposes code division multiplexing (CDM) based reference signal (RS) multiplexing using oversampling for orthogonal frequency division multiplexing (OFDM) in the downlink. In the proposed RS multiplexing scheme, multiple transmission-stream-specific RSs are multiplexed using orthogonal CDM into the same original resource elements (REs) through oversampling of the fast Fourier transform (FFT) (or inverse fast Fourier transform (IFFT)). Hence, the required REs for the increased number of transmission streams, which correspond to the number of transmission antennas, can be reduced compared to that for the conventional RS multiplexing scheme that uses a combination of frequency division multiplexing (FDM) and time division multiplexing (TDM). Computer simulation results show that when the RSs for the third and fourth streams are multiplexed into the same REs as those for first and second streams using orthogonal CDM, the same block error rate performance is achieved as that for the RS multiplexing based on the Release 8 Long-Term Evolution (LTE) radio interface for 4-antenna space-frequency block code (SFBC) plus frequency switched transmit diversity (FSTD). |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Mobile communications / OFDM / Reference signal / Channel estimation / CDM / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 345, RCS2011-255, pp. 135-140, Dec. 2011. |
Paper # |
RCS2011-255 |
Date of Issue |
2011-12-08 (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 |
RCS2011-255 |
Conference Information |
Committee |
NS RCS |
Conference Date |
2011-12-15 - 2011-12-16 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Yamaguchi University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Mobile Ad-hoc Network, Ubiquitous Network, Wireless Communication, security, Multi-Access Network |
Paper Information |
Registration To |
RCS |
Conference Code |
2011-12-NS-RCS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
CDM Based Reference Signal Structure Using Oversampling for OFDM Downlink |
Sub Title (in English) |
|
Keyword(1) |
Mobile communications |
Keyword(2) |
OFDM |
Keyword(3) |
Reference signal |
Keyword(4) |
Channel estimation |
Keyword(5) |
CDM |
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Masahiro Tabata |
1st Author's Affiliation |
Tokyo City University (Tokyo City Univ.) |
2nd Author's Name |
Teruo Kawamura |
2nd Author's Affiliation |
NTT DOCOMO (NTT DOCOMO) |
3rd Author's Name |
Hidekazu Taoka |
3rd Author's Affiliation |
DOCOMO Communications Laboratories Europe GmbH (DOCOMO Europe Labs.) |
4th Author's Name |
Mamoru Sawahashi |
4th Author's Affiliation |
Tokyo City University (Tokyo City Univ.) |
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 |
2011-12-16 12:50:00 |
Presentation Time |
25 minutes |
Registration for |
RCS |
Paper # |
RCS2011-255 |
Volume (vol) |
vol.111 |
Number (no) |
no.345 |
Page |
pp.135-140 |
#Pages |
6 |
Date of Issue |
2011-12-08 (RCS) |
|