Signal processing method, system, device and MCPA equipment of dpd MCPA

Abstract

A signal processing method, system and device for a DPD (Digital Pre-Distortion) MCPA (Multi-Carrier Power Amplifier) and an MCPA are disclosed. The signal processing method for the DPD MCPA comprises a step of receiving a digital baseband signal of the DPD MCPA, and obtaining frequency point information of each carrier wave in the digital baseband signal after a first control signal is received; a step of performing carrier wave separation of the digital baseband signal according to the frequency point information to obtain at least two ways of carrier wave signals; performing corresponding treatment of the at least two ways of carrier wave signals, and sending the treated at least two ways of carrier wave signals to corresponding DPD processors for DPD treatment; and receiving at least two ways of feedback digital signals sent by corresponding couplers according to control of received feedback switching instructions, and sending the at least two ways of feedback digital signals to the corresponding DPD processors for serving as reference data for DPD treatment of the carrier wave signals. According to the invention, the digital baseband signal is separated into the at least two ways of carrier wave signals according to the frequency point information of each carrier wave, the correspondingly-processed carrier wave signals are output to the corresponding DPD processors for DPD treatment, and the carrier wave number of radiofrequency signals is increased without exceeding the treatment frequency band width of the DPD processor, and the data transmission speed of the base station is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a DPD MCPA signal processing method, system, device and MCPA equipment. Background technique [0002] With the rapid development of wireless communication technology and digital technology, especially the popularization of 3G network and the planning of 4G network, higher requirements are put forward for the transmission capacity and speed of data signals. With the development of digital technology, the base station MCPA (Multi-Carrier Power Amplifier, multi-carrier power amplifier), as the core component of the wireless communication system, integrates and applies a variety of digital technologies. [0003] The traditional DPD (Digital Pre-Distortion, digital pre-distortion) MCPA first performs down-conversion and analog-to-digital sampling processing on the RF input signal to obtain a digital baseband signal, and then uses the DPD processor to perform digital pre...

AI Technical Summary

Problems solved by technology

Due to the limitation of the processing frequency bandwidth of the DPD processor, the number of carriers of the RF input signal cannot be too much. The traditional DPD MCPA limits the number of carriers of the RF signal, resulting in low data transmission speed of the base station.

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