Method for generating microwave predistortion signal and device thereof

Abstract

The present invention discloses a method for generating a microwave predistortion signal and a device thereof. The microwave receiver receives the first receiving signal after ananlog to digit conversion and performs channel compensation for the first receiving signal so as to obtain the second receiving signal,the first transmitting signal is estimated according to the second receiving signal,the first transimitting signal is the transmitting signal before ananlog to digit conversion of the microwave transmitter,the predistortion factor calculation is performed according to the second receiving signal and the first transmitting signal,the second receiving signal before the first transmitting signal is estimated by using the first order factor obtained by the predistortion factor calculation for linear distortion compensation,and the other predistortion factors besides the first order factor are sent to the microwave transmitter to make the transmitted signal of the microwave transmitter perform nonlinear predistortion. The frist receiving signal is the signal after ananlog to digit conversion, namely teh receiving of the first receiving signal does not require the microwave receiver to increase the additional channel that the receving channel of the microwave receiver can be used, thus saving the cost.

Description

technical field [0001] The present invention relates to the field of wireless technology, in particular to a method and device for generating a microwave predistortion signal. Background technique [0002] Microwave technology transmits data directly through space without laying optical fibers or cables. It has obvious engineering advantages in cities, remote areas or special areas such as rivers. Microwave technology is convenient for networking, flexible in use, and short in service opening time; With the development of microwave technology, the cost of microwave equipment is gradually reduced. Therefore, microwave technology is used more and more widely. [0003] A power amplifier (Power Amplifier, PA) is a key component of a microwave communication system, and nonlinearity is an inherent characteristic of the power amplifier. The easiest way to reduce the impact of power amplifier nonlinearity on the microwave communication system is to reduce the input power of the pow...

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Problems solved by technology

[0004] The pre-distortion technology in the prior art adopts the method of feeding back the signal received by the microwave receiver to the microwave transmitter for pre-distortion calculation. It is necessary to add a complete signal feedback device from radio frequency to baseband, and the implementation cost is high.

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