SEMIBLIND ESTIMATION OF SPATIOTEMPORAL FILTER COEFFICIENTS BASED ON ATRAINING-LIKE APPROACH

A semiblind approach for equalization and jammers rejection at the bas e station in wireless communications is presented. It is based on the idea of enlarging the effective length of a known short training seque nce by using a few additional information symbols and the finite alpha bet property of communication signals. Simulation results for spatio-t emporal processing of 4-QPSK signals transmitted by simultaneous intra cell users demonstrate the advantage of the proposed approach in situa tions where the length of the training sequence is not large enough to allow estimation of the desired signal with previously proposed metho ds.