Paper Abstract and Keywords |
Presentation |
2014-03-05 14:00
A Pilot Contamination Averse Closed-Loop Scheme for TDD-Based Massive MIMO Systems Oussama Souihli, Yasuyuki Hatakawa, Satoshi Konishi (KDDI R&D Labs) RCS2013-384 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
TDD-based Massive MIMO systems rely on channel reciprocity assumption (i.e. that the downlink channel matrix can be inferred from the uplink channel matrix), so that it suffices that the receivers send pilots in the uplink to the BS for the latter to determine the uplink channel matrix and subsequently the downlink channel matrix. However, since there are many UEs in Massive MIMO and the number of mutually-orthogonal pilot sequences is limited, some pilot sequences must be reused. This pilot reuse degrades uplink channel estimation in what is commonly known as the "pilot contamination" or "pilot pollution" problem. In this work, we provide a blind uplink channel estimation approach combined with a carefully defined transmit precoding, such that full-CSI-like performance is achieved. Because the proposed channel estimation is blind, there is no pilot contamination because there are no pilots in the first place. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Massive MIMO / Channel Estimation / QR Decomposition / Tomlinson-Harashima Precoding / Closed-Loop MIMO / / / |
Reference Info. |
IEICE Tech. Rep., vol. 113, no. 456, RCS2013-384, pp. 469-474, March 2014. |
Paper # |
RCS2013-384 |
Date of Issue |
2014-02-24 (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) |
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RCS2013-384 |
Conference Information |
Committee |
RCS SR SRW |
Conference Date |
2014-03-03 - 2014-03-05 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Waseda Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Mobile Communication Workshop |
Paper Information |
Registration To |
RCS |
Conference Code |
2014-03-RCS-SR-SRW |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Pilot Contamination Averse Closed-Loop Scheme for TDD-Based Massive MIMO Systems |
Sub Title (in English) |
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Keyword(1) |
Massive MIMO |
Keyword(2) |
Channel Estimation |
Keyword(3) |
QR Decomposition |
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Tomlinson-Harashima Precoding |
Keyword(5) |
Closed-Loop MIMO |
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1st Author's Name |
Oussama Souihli |
1st Author's Affiliation |
KDDI R&D Laboratories, Inc. (KDDI R&D Labs) |
2nd Author's Name |
Yasuyuki Hatakawa |
2nd Author's Affiliation |
KDDI R&D Laboratories, Inc. (KDDI R&D Labs) |
3rd Author's Name |
Satoshi Konishi |
3rd Author's Affiliation |
KDDI R&D Laboratories, Inc. (KDDI R&D Labs) |
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Speaker |
Author-1 |
Date Time |
2014-03-05 14:00:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2013-384 |
Volume (vol) |
vol.113 |
Number (no) |
no.456 |
Page |
pp.469-474 |
#Pages |
6 |
Date of Issue |
2014-02-24 (RCS) |
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