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| Presentation | 2008-10-22 14:35 A Random Beamforming Technique in Multiuser Multi-Antenna OFDM Systems for Large System Capacity and Fairness Among Users Yoshitaka Eriguchi (Tokyo Univ. of Science), Tomoaki Ohtsuki (Keio Univ.)  RCS2008-107 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We propose a random beamforming technique in multiuser multi-antenna orthogonal frequency division mulplexing (OFDM) systems for a large system capacity and fairness among users. In the proposed technique, we allocate several beams on each subcarrier to users based on signal-to-interference pluse noise ratio (SINR). We also allocate all the remaining beams on each subcarrier by the proportional fairness (PF) algorithm. After allocating all the beams, we select the beams and the corresponding subcarriers where each user with low capacity has his highest SINR. We use the random unitary matrices corresponding to the selected beams and subcarriers on next time. Allocating the beams as the above, the proposed technique can achieve high system capacity and fairness among users. We show that the proposed technique can achieve good trade-off between system capacity and fairness among users by changing the number of beams on each subcarrier that we allocate to users based on SINR. We also show that compared to the conventional technique, the proposed techique achieves high system capacity with the same variance of user capacity. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | scheduling / random unitary beamforming / PF algorithm / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 249, RCS2008-107, pp. 25-30, Oct. 2008. | |
| Paper # | RCS2008-107 | |
| Date of Issue | 2008-10-15 (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 | RCS2008-107 |
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| Conference Information | |
| Committee | SR RCS USN AN |
| Conference Date | 2008-10-22 - 2008-10-24 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa industry support center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless discributed network special session and general session |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2008-10-SR-RCS-USN-AN |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Random Beamforming Technique in Multiuser Multi-Antenna OFDM Systems for Large System Capacity and Fairness Among Users |
| Sub Title (in English) | |
| Keyword(1) | scheduling |
| Keyword(2) | random unitary beamforming |
| Keyword(3) | PF algorithm |
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| 1st Author's Name | Yoshitaka Eriguchi |
| 1st Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
| 2nd Author's Name | Tomoaki Ohtsuki |
| 2nd Author's Affiliation | Keio University (Keio Univ.) |
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| Speaker | Author-2 |
| Date Time | 2008-10-22 14:35:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2008-107 |
| Volume (vol) | vol.108 |
| Number (no) | no.249 |
| Page | pp.25-30 |
| #Pages | 6 |
| Date of Issue | 2008-10-15 (RCS) |
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