METHOD FOR PRE-DISTORTING SIGNAL SENT BETWEEN TWO DEVICES IN COMMUNICATION NETWORK AND DEVICE EXECUTING THIS METHOD

PROBLEM TO BE SOLVED: To provide the method that pre-distorts a signal sent from a 1st device to a 2nd device. SOLUTION: The method includes a step (50) where a 1st device (U1) transmits a 1st prescribed sequence (s(t)) in a form of a return sequence to a 2nd device (U2) that returns the 1st prescribed sequence (s(t)) in a received form to the 1st device (U1), a step (51) where a representative coefficient ( H1*H2)-1, H1*H2}) of 1st and 2nd channels (H1, H2) is calculated based on a received sequence (s(t)) in the 1st device (U1) and a step where a signal transmitted by the 1st device (U1) is pre-distorted according to representative coefficients (H2, H2-1) of the 2nd channel and the coupled representative coefficient ( H1*H2}-1, H1*H2}) of the 1st and 2nd channels.