Practical cancellation of nonlinear ISI in data transmission

W. Frank
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引用次数: 3

Abstract

Nonlinear intersymbol interference (ISI) often arise in voice-band communication channels at high transmission rates or in satellite channels due to nonlinearities in the power amplifiers. Proposed equalizers for the compensation of these nonlinear distortions are mainly based on the Volterra series expansion, which is an elegant but very complex model. This paper presents a new decision feedback equalizer (DFE) which is composed only of linear filters and multipliers. Hence, the complexity of this still very general structure is comparable to linear filtering. Simulations show that the proposed DFE outperforms the conventional DFE and the Volterra DFE with a comparable complexity.
数据传输中非线性ISI的实际消除
由于功率放大器的非线性特性,在高传输速率的声频信道或卫星信道中经常出现非线性码间干扰(ISI)。目前提出的补偿这些非线性畸变的均衡器主要基于Volterra级数展开,这是一个优雅但非常复杂的模型。提出了一种仅由线性滤波器和乘法器组成的决策反馈均衡器。因此,这种仍然非常普遍的结构的复杂性与线性滤波相当。仿真结果表明,在相同的复杂度下,所提出的DFE算法优于传统DFE算法和Volterra DFE算法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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