Method, arrangement and device for controlling predistortion

Details Method, arrangement and device for controlling predistortion Method, arrangement and device for controlling predistortion

2008-01-22

2008-01-22

Nguyen, Patricia (Department: 2817)

Amplifiers

Hum or noise or distortion bucking introduced into signal...

C455S114300

Reexamination Certificate

active

10596041

ABSTRACT:
A predistortion control device (1). The device has a first predistortion control input connectable to a power amplifier output (21); a second predistortion control input (11) connectable to a signal contact of a predistortion device; and a predistortion control output (12) connectable to a control contact of the predistortion device. The predistortion control device (1) further includes a cross-correlator device (110). The cross-correlator device (110) is connected with a first cross-correlator input (1101, 1101I,1101Q) to the first predistortion control input and a second cross-correlator input (1102, 1102I,1102Q) to the second predistortion control input (11). The cross-correlator device (110) is further has a cross-correlator output (1112) at which a cross-correlation signal can be presented, the cross-correlation signal representing a measured cross-correlation of signals presented at the first cross-correlator input (1101, 1101I,1101Q) and the second cross-correlator input (1102, 1102I,1102Q). The predistortion control device (1) further has a predistortion function selector device (120)(120), connected with a selector input to the cross-correlator output (1112), and with a selector output to the predistortion control output (12), at which selector output a predistortion control signal can be presented. The predistortion control signal representing a predistortion function determined on the basis of said cross-correlator signal.

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patent: WO 01/08294 (2001-02-01), None

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