射频功率放大器/发射机特性的精确时延估计和校准

2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI:10.1109/ICCSC.2008.22

Taijun Liu, Yan Ye, Xingbin Zeng, F. Ghannouchi

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引用次数: 19

摘要

本文提出了一种基于交叉协方差的时延估计方法，用于准确确定射频功率放大器/发射机输入输出之间的时延。为了克服基带信号采集系统中模数转换器采样率较低造成的时间分辨率限制，采用拉格朗日插值法提高了时间分辨率。为了在一定的计算资源消耗条件下增大时延估计/对齐的动态范围，提出了一种两步法的时延估计/对齐方法。实验验证结果表明，该方法对精确的时延估计和对准是有效的。

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Accurate Time-Delay Estimation and Alignment for RF Power Amplifier/Transmitter Characterization

This paper presents a cross-covariance-based time- delay estimation method for accurate determination of the time- delay between the input and the output of a RF power amplifier/transmitter. In order to overcome the time resolution limitation caused by the relative low sampling rate of the analog- to-digital converter in the baseband signal acquisition system, the Lagrange interpolation is utilized to improve the time resolution. A two-step method for time-delay estimation/alignment is proposed to increase the dynamic range for time-delay estimation/alignment under the certain computation resource consumption condition. The experimental validation results have been provided to illustrate the effectiveness of the proposed approach for accurate time-delay estimation and alignment.

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2008 4th IEEE International Conference on Circuits and Systems for Communications

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