Open AccessRobust blind carrier frequency synchronisation for direct sequence spread spectrum systems
Author(s) -
Le Nir V.,
Scheers B.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2014.3776
Subject(s) - spread spectrum , direct sequence spread spectrum , computer science , electronic engineering , spectrum (functional analysis) , physics , telecommunications , engineering , code division multiple access , quantum mechanics
A robust blind carrier frequency synchronisation technique applicable to direct sequence spread spectrum (DSSS) systems is presented. The proposed method extends a blind timing synchronisation technique based on an autocorrelation matrix by applying open‐loop single‐frequency estimation algorithms to the eigenvector of the time synchronised autocorrelation matrix of the largest eigenvalue. A comparison of different single‐frequency estimation algorithms is given. Simulation results show that some algorithms attain the Cramer–Rao bound (CRB) even at low signal‐to‐noise ratios (SNRs).