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| Presentation | 2014-11-12 14:10 Open-Loop Approximate Block Diagonalization for Multiuser MIMO Communications with non-Gaussian Distributed Incedence Angles Shota Kubo, Kazuhiko Fukawa, Hiroshi Suzuki, Yuyuan Chang (Tokyo Tech)  RCS2014-201 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | As a precoding scheme to suppress co-channel interference among users for multiuser MIMO mobile communications, an approximate block diagonalization (BD) method that does not require feedback of channel state information (CSI) by using the second-order statistics of the channel has been proposed. However, this scheme assumes that an incidence angle distribution of propagation paths follows the Gaussian distribution and thus can hardly be applied to other distributions. To cope with such a problem, this report proposes an approximate BD scheme that estimates the incidence angle distribution from uplink received signals by using the minimum variance distortionless response (MVDR) with the spatial smoothing and that obtains a covariance matrix of the downlink channel from the estimated incidence angle distribution. Computer simulations under conditions of two users and mixed normal distributions with two peaks demonstrate that the proposed scheme can achieve exellent BER performance in a low $E_b/N_0$ region although it suffers from error floors in a high $E_b/N_0$ region owing to residual interference. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Mobile Communication / multiuser MIMO / precoding / block diagonalization / DOA estimation / spatial smoothing / MVDR / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 295, RCS2014-201, pp. 25-30, Nov. 2014. | |
| Paper # | RCS2014-201 | |
| Date of Issue | 2014-11-05 (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 | RCS2014-201 |
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| Conference Information | |
| Committee | AP RCS |
| Conference Date | 2014-11-12 - 2014-11-14 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yamagata University, Yonezawa Campus |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antennas, Equalization, Interference Cancellation, MIMO, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2014-11-AP-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Open-Loop Approximate Block Diagonalization for Multiuser MIMO Communications with non-Gaussian Distributed Incedence Angles |
| Sub Title (in English) | |
| Keyword(1) | Mobile Communication |
| Keyword(2) | multiuser MIMO |
| Keyword(3) | precoding |
| Keyword(4) | block diagonalization |
| Keyword(5) | DOA estimation |
| Keyword(6) | spatial smoothing |
| Keyword(7) | MVDR |
| Keyword(8) | |
| 1st Author's Name | Shota Kubo |
| 1st Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 2nd Author's Name | Kazuhiko Fukawa |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 3rd Author's Name | Hiroshi Suzuki |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 4th Author's Name | Yuyuan Chang |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
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| Speaker | Author-1 |
| Date Time | 2014-11-12 14:10:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2014-201 |
| Volume (vol) | vol.114 |
| Number (no) | no.295 |
| Page | pp.25-30 |
| #Pages | 6 |
| Date of Issue | 2014-11-05 (RCS) |
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