Procedure for estimating amplification factors of a CDMA signal

Details Procedure for estimating amplification factors of a CDMA signal Procedure for estimating amplification factors of a CDMA signal

2007-12-18

2007-12-18

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S150000, C375S240180, C375S130000, C375S140000, C375S316000, C370S342000, C370S335000, C370S529000

Reexamination Certificate

active

10368797

ABSTRACT:
The invention concerns a procedure for estimating unknown amplification factors of a received CDMA signal, which encompasses a plurality of code channels, in which respectively an input signal from a symbol plane is split on a symbol plane through splitting with a split code (ωab(ν)) in a chip plane. The procedure is executed in the following steps: formation of a cost function dependent upon estimated values of all unknown amplification factors, partial differentiation of the cost function according to estimated value of the unknown amplification factors, formation of a matrix-vector-equation on the basis that all partial differentials of the cost function are zero and thus a minimum of the cost function is present, and the computation of at least some of the matrix coefficients of the matrix-vector-equation with a correlation function on the symbol plane.

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