多用户MIMO下行传输的跟踪平衡

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI:10.1109/ACSSC.2002.1197005

H. Boche, M. Schubert, Eduard Axel Jorswieck

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引用次数: 14

摘要

我们考虑了多用户MIMO下行信道中各个容量的平衡问题。如果基站可以获得完美的信道状态信息，则可以通过调整发射协方差矩阵来联合控制所有用户的速率。我们提出了一种新的基于道均衡的传输策略，该策略在低信噪比条件下是最优的。否则，它提供了一个近似值。提出了一种快速收敛到轨迹平衡问题全局最优的迭代算法。

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Trace balancing for multiuser MIMO downlink transmission

We consider the problem of balancing individual capacities in a multiuser MIMO downlink channel. If perfect channel state information is available at the base station, the rates of all users can be jointly controlled by adjusting the transmit covariance matrices. We propose a new transmission strategy based on trace balancing, which is optimal in the low SNR regime. Otherwise, it provides an approximation. An iterative algorithm is proposed, which rapidly converges to the global optimum of the trace balancing problem.

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Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002.

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