Title :
An analytic solution to joint channel and carrier offset estimation in CDMA
Author :
Li, Kemin ; Liu, Hui
Author_Institution :
Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA
Abstract :
The problem of joint carrier offset and channel estimation in code division multiple access (CDMA) communications is studied. An analytic algorithm that provides closed-form channel and carrier offset estimates is proposed. The algorithm first converts the multiuser estimation problem into single-user problems, and then analytically solves the resulting nonlinear multivariate optimization problems utilizing polynomial matrix manipulation. Computer simulations are provided to verify the efficacy of the proposed algorithm.
Keywords :
code division multiple access; optimisation; parameter estimation; polynomial matrices; synchronisation; CDMA; algorithm; closed-form estimate; code division multiple access; joint channel carrier offset estimation; multiuser estimation problem; nonlinear multivariate optimization problems; polynomial matrix manipulation; single-user problems; Algorithm design and analysis; Channel estimation; Finite impulse response filter; Frequency estimation; Maximum likelihood detection; Multiaccess communication; Multipath channels; Multiuser detection; Parameter estimation; Polynomials;
Journal_Title :
Signal Processing Letters, IEEE
