用于多奈奎斯特频带 DAC 均衡的线性相位 FIR 滤波器的阶次估计

IF 3.2 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Signal Processing Letters Pub Date : 2024-10-17 DOI:10.1109/LSP.2024.3483008

Deijany Rodriguez Linares;Håkan Johansson;Yinan Wang

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引用次数: 0

摘要

这封信探讨了用于均衡数模转换器（DAC）频率响应的线性相位有限长度脉冲响应（FIR）滤波器的设计和特性。信中推导了带宽和均衡精度函数下所需滤波器阶数的估算值，适用于多个奈奎斯特频带的 DAC 中使用的四种 DAC 脉冲。这些估算值是通过一大组最小最优均衡器以及使用符号回归和最小最优曲线拟合进一步增强后得出的。设计实例证明了所提出的估计值的准确性。此外，信中还讨论了四种线性相位 FIR 滤波器在不同均衡器情况下的适用性，以及均衡系统的相应特性。

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Order Estimation of Linear-Phase FIR Filters for DAC Equalization in Multiple Nyquist Bands

This letter considers the design and properties of linear-phase finite-length impulse response (FIR) filters for equalization of the frequency responses of digital-to-analog converters (DACs). The letter derives estimates for the filter orders required, as functions of the bandwidth and equalization accuracy, for four DAC pulses that are used in DACs in multiple Nyquist bands. The estimates are derived through a large set of minimax-optimal equalizers and the use of symbolic regression followed by minimax-optimal curve fitting for further enhancement. Design examples demonstrate the accuracy of the proposed estimates. In addition, the letter discusses the appropriateness of the four types of linear-phase FIR filters, for the different equalizer cases, as well as the corresponding properties of the equalized systems.

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来源期刊

IEEE Signal Processing Letters 工程技术-工程：电子与电气

CiteScore

7.40

自引率

12.80%

发文量

339

审稿时长

2.8 months

期刊介绍： The IEEE Signal Processing Letters is a monthly, archival publication designed to provide rapid dissemination of original, cutting-edge ideas and timely, significant contributions in signal, image, speech, language and audio processing. Papers published in the Letters can be presented within one year of their appearance in signal processing conferences such as ICASSP, GlobalSIP and ICIP, and also in several workshop organized by the Signal Processing Society.