Open AccessFPGA‐based high accuracy burst carrier frequency measurement method
Author(s) -
Zhang Peng,
Wang Houjun,
Li Li,
Wang Ping
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.3525
Subject(s) - field programmable gate array , signal edge , multiplication (music) , computer science , electronic engineering , gate array , enhanced data rates for gsm evolution , algorithm , measurement uncertainty , computer hardware , mathematics , digital signal processing , engineering , statistics , telecommunications , combinatorics , analog signal
A burst carrier frequency measurement scheme combined with a timestamping counting method based on a field programmable gate array (FPGA) is proposed. With the multiplication and phase shift of count clock, multiple parallel counters are continuously counted, and the times of the rising edge of the unknown frequency f x are counted simultaneously. To obtain the frequency of f x , linear regression by use of least‐squares line fitting is used. Experimental results show that the proposed approach can effectively reduce the error introduced by the quantisation error of ±1, improve measurement accuracy by about 2 to 3 bit, reduce measurement uncertainty by more than 20% and diminish the processing time to 200 ns compared with the traditional methods under the same conditions.