An analytic solution to joint channel and carrier offset estimation in CDMA

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.