DocumentCode :
1950758
Title :
Improved method for measuring frequency ratios in GSM mobile phones
Author :
Bode, Peter ; Lampe, Alexander ; Helfenstein, Markus ; Gollnick, Michael
Author_Institution :
Philips Semicond., Nuremberg, Germany
fYear :
2004
fDate :
3-6 Oct. 2004
Firstpage :
621
Lastpage :
624
Abstract :
The principle of operation of the ubiquitous low-cost digital circuits for frequency measurement appears to have remained unchanged for decades. In applications with very high accuracy requirements, such as in GSM mobile phones, these conventional solutions can lead to excessive measurement periods with detrimental effect on the stand-by time. In this paper, we present a novel frequency measurement technique which is based on regression algorithms. Experiments with a hardware implementation prove that the crucial product of measurement error and measurement period can be reduced by orders of magnitude compared to conventional solutions while the slight extension of the digital circuitry is virtually for free.
Keywords :
cellular radio; frequency measurement; measurement errors; mobile handsets; regression analysis; GSM mobile phones; frequency ratio measurement; high accuracy measurement; low-cost digital frequency measurement circuits; measurement error; measurement period; regression algorithms; Clocks; Counting circuits; Frequency estimation; Frequency measurement; GSM; Global Positioning System; Measurement units; Mobile handsets; Oscillators; Time measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Custom Integrated Circuits Conference, 2004. Proceedings of the IEEE 2004
Print_ISBN :
0-7803-8495-4
Type :
conf
DOI :
10.1109/CICC.2004.1358902
Filename :
1358902
Link To Document :
بازگشت