Arrangement for compensating for non-linear distortion in an...

Details Arrangement for compensating for non-linear distortion in an... Arrangement for compensating for non-linear distortion in an...

H - Electricity

03

M

354/70, 340/72

H03M 1/06 (2006.01) H04B 3/23 (2006.01)

Patent

CA 1266104

PHE 86004 14 12.08.1986 ABSTRACT An arrangement for compensating for non-linear distortion in an input signal to be digitized and an echo cancelling system including such an arrangement. An arrangement for compensating for non-linear distortion in an input signal to be digitized, comprising an analogue-to-digital converter (2) for converting the input signal into an amplitude-time discrete output signal, means (3) for deriving a set of coefficients which are associated with an orthogonal signal representation of a signal related to the input signal, a memory (4) in which a Table with correction values is stored, means for addressing the memory for reading a correction value from the Table, each of the coefficients determining an address for the memory, means (5) for adding together the correction value and the analogue-to-digital converter output signal for providing a linearized signal, and an adaptive control loop (7,8,16,18) for substituting in the Table the new correction value for the correction value read. (Figure 1a)

533101

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