| 摘要 |
The invention concerns a procedure for the estimation of unknown parameters (Deltaomega, Deltaphi, epsilon,g<SUB>a</SUB><SUP>sync</SUP>,g<SUB>b</SUB><SUP>code</SUP>) of a received CDMA-signal (r<SUB>desc</SUB>(v)) which is transmitted by means of a transmission channel (11), in which the CDMA-signal has experienced changes to the parameters (Deltaomega,Deltaphi,epsilon,g<SUB>b</SUB><SUP>sync</SUP>,g<SUB>b</SUB><SUP>code</SUP>) with the following steps: (a) formation of a cost function (L), which is dependent on the estimated values (Deltaω,Deltaφ,ε, . . . ) of combined unknown parameters (Deltaomega,Deltaphi,epsilon, . . . ); (b) partial differentiation of the cost function in respect to the said estimate values (Deltaω,Deltaφ,ε, . . . ) of the unknown parameters (Deltaomega,Deltaphi,epsilon, . . . ); (c) formation of a matrix-vector-equationfrom 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 elements of the matrix-vector-equation with the use of the Fast-Hadamard-Transformation. |
