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| Presentation | 2019-10-24 11:50 A Study on Interference Mitigation Considering Pilot Overhead in TDD Massive MIMO Heterogeneous Networks Shunsuke Kamiwatari, Osamu Muta (Kyushu Univ.)  RCS2019-183 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In a two-tier heterogeneous network (HetNet) , mitigation of interference between the MC and SC (i.e., cross-tier interference) is an important issue, where macro cell (MC) and small cell (SC) use the same time/frequency resources. The authors have proposed to estimate cross-channel state information between macro base station (MBS) and small cell users (SUs) by using uplink pilots and optimizing the precoding weights at MBS so as to mitigate interference from MBS to SU. However, in the above work, cross-tier interference mitigation from small-cell base station (SBS) to macro users (MUs) is not taken into consideration. In this paper, we propose a cross-tier interference mitigation scheme that coordinates not only cross-tier interference from MBS to SU but also that from SBS to MU in time division duplex (TDD) based two-tier HetNet where massive multi-input multi-output (mMIMO) is equipped at MBS. In this scheme, cross-tier interference can be mitigated without increasing the pilot overhead in comparison with the conventional scheme. Simulation results show that the proposed scheme is effective in improving downlink sum-rate. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | two-tier heterogeneous network / massive MIMO / orthogonal pilot / pilot overhead / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 244, RCS2019-183, pp. 31-36, Oct. 2019. | |
| Paper # | RCS2019-183 | |
| Date of Issue | 2019-10-17 (RCS) | |
| ISSN | 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 | RCS2019-183 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2019-10-24 - 2019-10-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yokosuka Research Park |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, Future Wireless Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2019-10-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Interference Mitigation Considering Pilot Overhead in TDD Massive MIMO Heterogeneous Networks |
| Sub Title (in English) | |
| Keyword(1) | two-tier heterogeneous network |
| Keyword(2) | massive MIMO |
| Keyword(3) | orthogonal pilot |
| Keyword(4) | pilot overhead |
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| 1st Author's Name | Shunsuke Kamiwatari |
| 1st Author's Affiliation | Kyushu University (Kyushu Univ.) |
| 2nd Author's Name | Osamu Muta |
| 2nd Author's Affiliation | Kyushu University (Kyushu Univ.) |
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| Speaker | Author-1 |
| Date Time | 2019-10-24 11:50:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2019-183 |
| Volume (vol) | vol.119 |
| Number (no) | no.244 |
| Page | pp.31-36 |
| #Pages | 6 |
| Date of Issue | 2019-10-17 (RCS) |
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