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首页> 外文期刊>Arabian Journal for Science and Engineering >An Interpolation-Based Approach to Time-Varying Equalizer Design
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An Interpolation-Based Approach to Time-Varying Equalizer Design

机译：基于插值的时变均衡器设计方法

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摘要

Communications over time-varying channels entail receiver designs which adapt themselves to the channel temporal variations and consequently pose significant computational requirements for the receiver. This work studies the equalization of such channels from the perspective of the computational complexities involved and proposes a flexible, low-complexity scheme for the design of time-varying equalizers based on reconstructing the time-varying equalizer from its samples through a combination of the Fourier exponentials and the Gradient Descent algorithm. This approach is considered for both linear and decision feedback equalizer designs. It is further extended to the framework of turbo equalization for time-varying channels. Numerical simulations have been performed to evaluate the performance of this proposed scheme, while a detailed complexity analysis shows that the proposed scheme can result in significant simplification in the receiver design complexity without incurring much performance loss.
机译：时变信道上的通信需要接收机设计，该接收机设计使其自身适应于信道的时间变化，因此对接收机提出了重要的计算要求。这项工作从涉及的计算复杂性的角度研究了此类通道的均衡，并提出了一种灵活的，低复杂度的方案，用于时变均衡器的设计，该方案基于傅立叶的组合从其样本中重构时变均衡器。指数和梯度下降算法。线性和判决反馈均衡器设计均考虑使用此方法。它进一步扩展到时变信道的涡轮均衡框架。已经进行了数值模拟以评估该提议的方案的性能，而详细的复杂性分析表明，该提议的方案可以导致接收机设计复杂性的显着简化而不会造成很多性能损失。

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