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A field programmable gated array-based method for performing high-precise instantaneous burst carrier frequency

Peng Zhang¹, Houjun Wang¹, Li Li¹

¹School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China.

The Review of Scientific Instruments

|July 3, 2014

Summary

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This study presents a novel FPGA-based method for instantaneous burst carrier frequency measurement. The technique enhances accuracy and reduces processing time significantly compared to traditional approaches.

Area of Science:

Electrical Engineering
Signal Processing
Digital Electronics

Background:

Accurate measurement of instantaneous burst carrier frequencies is crucial in modern communication systems.
Traditional frequency measurement methods often suffer from quantization errors and limited processing speeds.
Field-programmable gate arrays (FPGAs) offer a platform for high-speed digital signal processing.

Purpose of the Study:

To propose and validate an instantaneous burst carrier frequency measurement scheme.
To improve measurement accuracy and reduce uncertainty.
To decrease the processing time for frequency measurements.

Main Methods:

Implementation of a timestamping counting method on an FPGA.
Utilizing multiplication and phase shift of counting clocks for parallel counters.

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Employing least squares line fitting for frequency calculation from count values and timestamps.

Simultaneous counting of rising edges of the measured frequency f(x).

Main Results:

Reduction of quantization error (±1).
Improvement in measurement accuracy by 2 to 3 digits.
Reduction in measurement uncertainty by over 20%.
Achieved processing time of 200 ns, significantly faster than traditional methods.

Conclusions:

The proposed FPGA-based scheme provides a highly accurate and efficient solution for instantaneous burst carrier frequency measurement.
The method effectively mitigates quantization errors and enhances overall measurement performance.
This approach offers a substantial advancement for applications requiring rapid and precise frequency analysis.