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Information 2017, 8(2), 53; doi:10.3390/info8020053

A Filter Structure for Arbitrary Re-Sampling Ratio Conversion of a Discrete Signal

1
Department of Mathematics and Computer Science, Guilin Normal College, Guilin 541001, China
2
School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China
*
Author to whom correspondence should be addressed.
Academic Editor: Mikael Skoglund
Received: 2 February 2017 / Revised: 20 April 2017 / Accepted: 5 May 2017 / Published: 12 May 2017
(This article belongs to the Section Information and Communications Technology)
View Full-Text   |   Download PDF [1424 KB, uploaded 12 May 2017]   |  

Abstract

In this report, we studied the sampling synchronization of a discrete signal in the receiver of a communication system and found that the frequency of the received signal usually exhibits some unpredictable deviations. We observed many harmonics caused by the frequency deviations of the discrete received signal. These findings indicate that signal sampling synchronization is an important research technique when using discrete Fourier transforms (DFT) to analyze the harmonics of discrete signals. We investigated the influence of these harmonics on the performance of signal sampling and studied the frequency estimation of the received signal. Based on the frequency estimation of the received signal, the sampling rate of the discrete signal was converted using a modified Farrow filter to achieve sampling synchronization for the received signal. The algorithm discussed here can be applied to sampling synchronization for monitoring and control systems. Finally, simulations and experimental results are presented. View Full-Text
Keywords: sample rate conversion; frequency estimation; Farrow filter sample rate conversion; frequency estimation; Farrow filter
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, H.; Zhu, C. A Filter Structure for Arbitrary Re-Sampling Ratio Conversion of a Discrete Signal. Information 2017, 8, 53.

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