Patent ID: 9008153
Filing Date: 2015-04-14
Classification: H03F,H04B,H04L

Abstract:
1. A microwave predistorted signal generating method, comprising: receiving, by a microwave receiver, a first received signal that has undergone analog-to-digital conversion; performing, by the microwave receiver, channel compensation on the first received signal, to obtain a second received signal; estimating, by the microwave receiver, a first transmitted signal according to the second received signal, wherein the first transmitted signal is a transmitted signal of a microwave transmitter before digital-to-analog conversion; performing, by the microwave receiver, predistortion coefficient computation according to the second received signal and the first transmitted signal; performing, by the microwave receiver by using a first-order coefficient obtained through the predistortion coefficient computation, linear distortion compensation on the second received signal that is before the first transmitted signal is estimated; sending, by the microwave receiver, other predistortion coefficients except for the first-order coefficient to the microwave transmitter, so that the microwave transmitter performs non-linearity predistortion on a transmitted signal by using the other predistortion coefficients except for the first-order coefficient; wherein performing the predistortion coefficient computation according to the second received signal and the first transmitted signal specifically comprises: where C k (n+1) is a k th order predistortion coefficient at (n+1) th time, C k (n) is a k th order predistortion coefficient at n th time, u k is a step for coefficient update, x(n) is the first transmitted signal, y(n) is the second received signal, conj(x(n)) is a conjugate of the first transmitted signal, k is an integer greater than 0, and n is an integer greater than 0; and wherein an initial value C