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

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4 Author(s)
Taijun Liu ; Coll. of Inf. Sci. & Eng., Ningbo Univ., Ningbo ; Yan Ye ; Xingbin Zeng ; Ghannouchi, F.M.

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.

Published in:

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

Date of Conference:

26-28 May 2008

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