Adaptive transmission scheme with delayed channel state information for multiuser MIMO-OFDM systems
An adaptive transmission scheme combining orthogonal space-time block code and eigen-beamforming was proposed for multiuser MIMO-OFDM downlinks. The scheme uses delayed channel state information from receivers to maximize the throughput. An adaptive subcarrier allocation criterion and corresponding...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2008-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74655476/ |
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| Summary: | An adaptive transmission scheme combining orthogonal space-time block code and eigen-beamforming was proposed for multiuser MIMO-OFDM downlinks. The scheme uses delayed channel state information from receivers to maximize the throughput. An adaptive subcarrier allocation criterion and corresponding bit-loading algorithm were pre-sented. Simulation results show that the scheme can make full use of delayed channel state information to achieve much more throughput than non-adaptive schemes. A sub-optimal bit-loading algorithm was also presented,which is non-iterative and requires small computation. Simulation results demonstrate that the incurred throughput loss is negligible. |
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| ISSN: | 1000-436X |