Patent Document ID: 5414699
Application ID: 08126865
Patent Flag: 1

Claim One:
1. In a Code Division Multiple Access (CDMA) receiver which utilizes adaptive equalization for minimizing errors between a Direct Sequence Spread Spectrum (DS-SS) signal and a reference signal; a method for optimizing convergence rate and minimizing errors in decoding a received signal comprising the steps of: a) receiving a DS-SS communication signal including at least one near signal, noise, and a desired DS-SS signal, wherein said desired DS-SS signal comprises binary bits coded with a spreading chip sequence; b) sampling during a bit interval said received DS-SS communication signal at a chip rate to produce received samples, said received samples being correlated with each other; c) partially de-correlating the received samples by employing a partial orthogonal transformation algorithm; d) providing a first subspace having a de-correlated segment associated with the desired DS-SS signal and the at least one near signal; e) providing a second subspace having a correlated segment associated with noise; f) adaptively and individually equalizing the first subspace to optimize convergence rate and minimize errors; and g) adaptively and collectively equalizing the second subspace.