Procedure for the estimation of parameters of a CDMA-signal

Abstract

The invention concerns a procedure for the estimation of unknown parameters (Δω, Δφ, ε, gasync, gbcode) of a received CDMA-signal (rdsec(v)) which is transmitted by means of a transmission channel (11), in which the CDMA-signal has experienced changes to the parameters (Δω, Δφ, ε, gasync, gbcode), with the following steps: (a) formation of a cost function (L), which is dependent on the estimated values (Δ{tilde over (ω)}, Δ{tilde over (φ)}, {tilde over (ε)}, . . . ) of combined unknown parameters (Δω, Δφ, ε, . . . ); (b) partial differentiation of the cost function in respect to the said estimate values (Δ{tilde over (ω)}, Δ{tilde over (φ)}, {tilde over (ε)}, . . . ) of the unknown parameters (Δω, Δφ, ε, . . . ); (c) formation of a matrix-vector-equation from the presupposition that all partial differentials of the cost function are zero and thus a minimum of the cost function exists, and (d) computation of at least some of the matrix elements of the matrix-vector-equation with the use of the Schnellen-Hadamard-Transformation.

Dependencies are inferred from the claim text.