| Optimal transmission strategy for spatially correlated MIMO systems with channel statistical information |
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| 作者姓名： | ZHAO Zhen-shan XU Guo-zhi |
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| 作者单位： | Department of Electronic Engineering，Shanghai Jiao Tong University，Shanghai 200240，China |
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| 摘 要： | In real multiple-input multiple-output (MIMO) systems, the perfect channel state information (CSI) may be costly or impossible to acquire. But the channel statistical information can be considered relatively stationary during long-term transmission. The statistical information can be obtained at the receiver and fed back to the transmitter and do not require frequent update. By exploiting channel mean and covariance information at the transmitter simultaneously, this paper investigates the optimal trans- mission strategy for spatially correlated MIMO channels. An upper bound of ergodic capacity is derived and taken as the per- formance criterion. Simulation results are also given to show the performance improvement of the optimal transmission strategy.
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| 关 键 词： | 偏相关MIMO系统 信道统计信息 最优传输策略 遍历容量 |
| 收稿时间： | 2006-06-29 |
| 修稿时间： | 2006-12-07 |
Optimal transmission strategy for spatially correlated MIMO systems with channel statistical information |
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| ZHAO Zhen-shan XU Guo-zhi.Optimal transmission strategy for spatially correlated MIMO systems with channel statistical information[J].Journal of Zhejiang University Science,2007,8(4):615-619. |
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| Authors: | Zhao Zhen-shan Xu Guo-zhi |
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| Institution: | (1) Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China |
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| Abstract: | In real multiple-input multiple-output (MIMO) systems, the perfect channel state information (CSI) may be costly or impossible to acquire. But the channel statistical information can be considered relatively stationary during long-term transmission. The statistical information can be obtained at the receiver and fed back to the transmitter and do not require frequent update. By exploiting channel mean and covariance information at the transmitter simultaneously, this paper investigates the optimal trans- mission strategy for spatially correlated MIMO channels. An upper bound of ergodic capacity is derived and taken as the per- formance criterion. Simulation results are also given to show the performance improvement of the optimal transmission strategy. |
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| Keywords: | MIMO Optimal transmission strategy Channel statistical information |
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