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| Presentation | 2015-06-26 10:21 Performance Comparison of Random Beamforming and Codebook-Based Beamforming in Cellular Downlink with Massive MIMO Takuya Hoshino, Kenichi Higuchi (Tokyo Univ. of Science)  RCS2015-89 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper compares the throughput levels of random beamforming (RB) and codebook-based beamforming (CBBF) in cellular downlink with Massive multiple-input multiple-output (MIMO). In MIMO transmission, the number of beams impacts on the spatial multiplexing effect and the inter-beam interference, simultaneously. Furthermore, the inter-cell interference power is dependent on the applied BF matrix at the neighbor base station except for the case when the number of beams equals to the number of base station transmitter antennas and unitary matrix is used as a BF matrix. When we assume massive MIMO where the number of base station transmitter antennas is very large, since we can expect that the number of beams less than the number of base station transmitter antennas is desirable, the above mentioned three factors largely affects the performance difference between BF methods. From the simulation results, we show that the RBF with limited number of beams can achieve higher throughput than the CBBF, since the BF matrix is predetermined before the data transmission and therefore the inter-cell interference power can be accurately estimated irrespective of the number of beams in RBF. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MIMO / Multiuser MIMO / codebook-based beamforming / Random beamforming / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 113, RCS2015-89, pp. 253-256, June 2015. | |
| Paper # | RCS2015-89 | |
| Date of Issue | 2015-06-17 (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 | RCS2015-89 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2015-06-24 - 2015-06-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| 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 | 2015-06-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Comparison of Random Beamforming and Codebook-Based Beamforming in Cellular Downlink with Massive MIMO |
| Sub Title (in English) | |
| Keyword(1) | MIMO |
| Keyword(2) | Multiuser MIMO |
| Keyword(3) | codebook-based beamforming |
| Keyword(4) | Random beamforming |
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| 1st Author's Name | Takuya Hoshino |
| 1st Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
| 2nd Author's Name | Kenichi Higuchi |
| 2nd Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
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| Speaker | Author-1 |
| Date Time | 2015-06-26 10:21:00 |
| Presentation Time | 8 minutes |
| Registration for | RCS |
| Paper # | RCS2015-89 |
| Volume (vol) | vol.115 |
| Number (no) | no.113 |
| Page | pp.253-256 |
| #Pages | 4 |
| Date of Issue | 2015-06-17 (RCS) |
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