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首页> 外文会议>Applications of Artificial Neural Networks >Tracking ability of L-level MLP based equalizers in non-linear microwave radio channels in the presence of Multipath Fading
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Tracking ability of L-level MLP based equalizers in non-linear microwave radio channels in the presence of Multipath Fading

机译：在多路径衰落情况下，L型MLP基于L级MLP均衡器的跟踪能力

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The performance of microwave digital radio systems is severely degraded by multipath fading and also by the non-linear power amplifier at the transmitter, the combined effects of these result in a time varying non-linear channel. In this paper, the multilayer perceptron (MLP) based equalizer is investigated for use on such channels. It is found to ouperform the conventional approach, that is, the use of a transversal equalizer at the receiver operating with a signal predistorter placed before the non-linear power amplifier at the transmitter. An L-level non-linear function is used as a node activation for the MLP. Two update schemes are investigated, one being a complex version of the back propagation algorithm, the other a complex version of the delta-bar-delta algorithm.
机译：微波数字无线电系统的性能因变送器处的多径衰落和非线性功率放大器而严重降低，这些结果的组合效果在变化的非线性通道中。本文研究了基于多层的Perceptron（MLP）的均衡器，用于这些通道。它被发现对传统方法来说，即，在接收器处使用在发射器处的非线性功率放大器之前的信号预流变的接收器处使用横向均衡器。 L级非线性函数用作MLP的节点激活。研究了两个更新方案，一个是一个复杂版本的后传播算法，另一个复杂版本的Δ-bar-delta算法。

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