Zero-forcing precoding for frequency selective MIMO channels with H∞ criterion and causality constraint
Zero-forcing precoding for frequency selective MIMO channels with H∞ criterion and causality constraint
复制标题
具有 H∞ 准则和因果约束的频率选择性 MIMO 信道的迫零预编码
DOI：
10.1016/j.sigpro.2009.03.010
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
V. Pohl
中科院分区：
文献类型：
--
作者：
S. Wahls;H. Boche;V. Pohl
我们认为，迫零均衡的频率选择性多输入多输出（MIMO）信道的因果和线性时不变的预编码器存在符号间干扰。我们的动机是双重的。首先，我们关注的是因果预编码器的最佳性能从最坏的情况下的角度来看。因此，我们构建了一个最佳的因果预编码器，而与其他作品相反，我们的建设不限于有限或理性的脉冲响应。此外，我们推导出一种新的数值方法来计算的因果预编码器可实现的最佳性能指标为给定的信道。这个量在最佳预编码器的数值确定中是重要的。
We consider zero-forcing equalization of frequency selective multiple-input multiple-output (MIMO) channels by causal and linear time-invariant precoders in the presence of intersymbol interference. Our motivation is twofold. First, we are concerned with the optimal performance of causal precoders from a worst case point of view. Therefore we construct an optimal causal precoder, whereas contrary to other works our construction is not limited to finite or rational impulse responses. Moreover we derive a novel numerical approach to computation of the optimal performance index achievable by causal precoders for given channels. This quantity is important in the numerical determination of optimal precoders.