An SNR Dependent Model for the CDMA FLL

作者：Curran James T^*; Lachapelle Gerard; Murphy Colin C

来源：IEEE Transactions on Signal Processing, 2012, 60(3): 1522-1527.

DOI：10.1109/TSP.2011.2178840

• Code-division multiple access (CDMA)
• frequency-lock loop (FLL)
• frequency discriminator
• frequency estimation
• Global Navigation Satellite System (GNSS)

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.

• 出版日期2012-3