Robust uplink carrier frequency offset estimation in MIMO-OFDM systems
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
A joint blind timing and frequency offset estimator for asynchronous multicarrier CDMA systems
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Expert Systems with Applications: An International Journal
A Blind LCMV-Based CFO Estimation for MC-CDMA Systems Over Multipath Fading Channels
Wireless Personal Communications: An International Journal
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This paper addresses the problem of CDMA multiuser detection in the presence of unknown multipath channels and residual carriers. 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 using a polynomial matrix projection property. The performance of the proposed algorithm is investigated: through first-order perturbation analysis. We also calculate the Cramer-Rao bound (CRB) to illustrate the efficiency of the new algorithm. The analyzes are supported by computer simulations