FBMC/OQAM系统中带有ICI抑制的增强型MMSE子信道决策反馈均衡器

2017 International Conference on Computing, Networking and Communications (ICNC) Pub Date : 2017-03-10 DOI:10.1109/ICCNC.2017.7876278

Chih-Wei Chen, F. Maehara

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引用次数: 15

摘要

本文提出了一种基于最小均方误差(MMSE)准则的基于偏置正交调幅(OQAM)的滤波器组多载波(FBMC)系统的增强决策反馈均衡器(DFE)。对于每个子载波，除了一个前馈(FF)滤波器和一个反馈(FB)滤波器外，我们还添加了两个载波间干扰(ICI)抑制滤波器，它们反馈从相邻子信道提取的检测前体，以增强多径信道存在时的ICI抑制。我们的模拟结果表明，在严重的ICI和ISI场景下，我们的提议与MMSE-DFE相比有很大的改进，尽管计算复杂性方面的额外成本很少。

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An enhanced MMSE subchannel decision feedback equalizer with ICI suppression for FBMC/OQAM systems

This paper proposes an enhanced decision feedback equalizer (DFE) for filter bank multicarrier (FBMC) systems over offset quadrature amplitude modulation (OQAM) based on a minimal mean square error (MMSE) criterion. For each subcarrier, besides one feedforward (FF) filter and one feedback (FB) filter, we add two intercarrier interference (ICI)-suppressing filters, which feed back detected precursors extracted from neighboring subchannels to enhance ICI suppression in the presence of multipath channels. Our simulation results indicate our proposal makes a considerable improvement comparing with MMSE-DFE under a severe ICI and ISI scenario despite few extra costs in computational complexity.

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2017 International Conference on Computing, Networking and Communications (ICNC)

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