Combined Kernel Function and Coefficient Sharing for Digital Predistortion of RF Power Amplifiers With Dynamic Resource Block Allocation

IF 4.1 1区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Hang Yin;Anding Zhu
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引用次数: 0

Abstract

Flexible allocation of spectrum resources will introduce transmitted signals with different spectral energy distribution patterns. To make sure that high efficiency and good linearity in radio frequency (RF) systems can be achieved when handling all such signals, the digital predistortion (DPD) technique must be used and is required to generate different behavioral characteristics to compensate the distortions arising from these signals. To reduce the complexity for DPD hardware implementation, this article proposes an approach that combines kernel function and coefficient sharing. Substantial experimental results with 60- and 100-MHz 5G new radio (NR) signals of 63 resource block (RB) allocation patterns on two different types of power amplifiers (PAs) confirm that the proposed method can achieve significant reduction of kernel function diversity and coefficients while maintaining comparable linearization performance.
结合核函数和系数共享,实现具有动态资源块分配功能的射频功率放大器数字预失真
频谱资源的灵活分配将引入具有不同频谱能量分布模式的发射信号。为了确保射频(RF)系统在处理所有这些信号时能够实现高效率和良好的线性,必须使用数字预失真(DPD)技术,并且需要产生不同的行为特征来补偿这些信号引起的失真。为了降低DPD硬件实现的复杂性,本文提出了一种核函数与系数共享相结合的方法。在两种不同类型的功率放大器(pa)上对63种资源块(RB)分配模式的60 mhz和100 mhz 5G新无线电(NR)信号进行的大量实验结果证实,该方法可以显著降低核函数分集和系数,同时保持相当的线性化性能。
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来源期刊
IEEE Transactions on Microwave Theory and Techniques
IEEE Transactions on Microwave Theory and Techniques 工程技术-工程:电子与电气
CiteScore
8.60
自引率
18.60%
发文量
486
审稿时长
6 months
期刊介绍: The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.
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