Title :
An SNR Dependent Model for the CDMA FLL
Author :
Curran, James ; Lachapelle, Gerard ; Murphy, Colin C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. Coll. Cork, Cork, Ireland
fDate :
3/1/2012 12:00:00 AM
Abstract :
The tracking bandwidth and variance of the code-division multiple-access (CDMA) frequency-lock loop (FLL) are considered in this correspondence. It is shown that the behavior of the discriminator can vary significantly with varying SNRc with corresponding variations in loop performance. A model is presented which reflects this signal-to-noise ration (SNR)-sensitivity and, thus, facilitates accurate loop design.
Keywords :
code division multiple access; frequency locked loops; CDMA FLL; SNR dependent model; code-division multiple-access frequency-lock loop; loop design; signal-to-noise ration-sensitivity; Bandwidth; Frequency estimation; Frequency locked loops; Multiaccess communication; Noise; Thermal noise; Tracking loops; Code-division multiple access (CDMA); Global Navigation Satellite System (GNSS); frequency discriminator; frequency estimation; frequency-lock loop (FLL);
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2011.2178840
