Patent ID: 7035601
Filing Date: 2006-04-25
Classification: H03F,H04B

Abstract:
1. A data transmission method for compensating for non-linearities of a transmission chain, the method comprising: first forming at least one time-domain compensation parameter vector; second forming at least one frequency-domain compensation parameter vector; determining at least one set of signal properties modeling the non-linearities in a transmission chain; third forming, based on the at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal; modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal; fourth forming a feedback signal from an output signal of a transmission chain; first adapting the at least one time-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal; and second adapting the at least one frequency-domain compensation parameter vector based on the residual error between the transmit signal and the feedback signal.