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arXiv 0901.2401cs.ITmath.IT
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一般线性约束下的MIMO广播信道优化

MIMO Broadcast Channel Optimization under General Linear Constraints

Hoon Huh, Haralabos Papadopoulos, Giuseppe Caire

摘要:

在最优DPC编码策略和简单的次优线性迫零波束形成策略下,研究了在一般线性约束下MIMO BC的发射参数(功率分配和导向矢量)的优化问题。在DPC的情况下,我们表明,“SINR对偶”和“最小-最大对偶”产生相同的对偶MAC问题,并比较两种替代方案,其有效的解决方案。在迫零波束形成的情况下,我们提出了一种新的基于广义逆矩阵直接优化的有效算法。在这两种情况下,这里提出的算法以最一般的形式解决问题,并且可以应用于先前考虑的特殊情况,例如每个天线和每组天线功率约束、“禁止干扰方向”约束或其任何组合。

英文摘要:

The optimization of the transmit parameters (power allocation and steering vectors) for the MIMO BC under general linear constraints is treated under the optimal DPC coding strategy and the simple suboptimal linear zero-forcing beamforming strategy. In the case of DPC, we show that "SINR duality" and "min-max duality" yield the same dual MAC problem, and compare two alternatives for its efficient solution. In the case of zero-forcing beamforming, we provide a new efficient algorithm based on the direct optimization of a generalized inverse matrix. In both cases, the algorithms presented here address the problems in the most general form and can be applied to special cases previously considered, such as per-antenna and per-group of antennas power constraints, "forbidden interference direction" constraints, or any combination thereof.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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