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Zero-forcing DPC beamforming design for multiuser MIMO broadcast channels

机译:多用户MIMO广播信道的零迫DPC波束成形设计

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摘要

The sum rate maximization in multiuser MIMO broadcast channels is investigated in this paper. We first propose an approach under a total power constraint. Compared with the most related methods in the literature, the proposed method can be easily adapted to a more realistic per-antenna power constraint. Since the power of each antenna is limited individually by the linearity of its power amplifier in practice, the per-antenna power constraint is more practical. Secondly, we propose a novel beamforming method under the per-antenna power constraint a better sum rate performance is achieved compared with the methods in the literature. Moreover, the proposed method works even if the number of total receive antennas is larger than that of transmit antennas.
机译:本文研究了多用户MIMO广播信道中的总速率最大化。我们首先提出一种在总功率约束下的方法。与文献中最相关的方法相比,所提出的方法可以轻松地适应更现实的每天线功率约束。由于实际上每个天线的功率都受到其功率放大器线性度的限制,因此每个天线的功率约束更为实际。其次,我们提出了一种在每天线功率约束下的新颖波束成形方法,与文献中的方法相比,可以获得更好的求和速率性能。此外,即使总接收天线的数量大于发射天线的数量,所提出的方法仍然有效。

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