Crest clipping method and equipment for multiband broadband signal

Abstract

Disclosed are a peak clipping method and device for broadband signals of multiple frequency bands. According to the technical solution of the embodiments of the present invention, after DAC processing is performed on received multicarrier signals of multiple frequency bands, peak values of the multicarrier signals of the multiple frequency bands are predicted in advance, and corresponding pre-peak clipping processing is performed according to prediction results, so as to ensure the peak-to-average ratio of the multicarrier signals of the multiple frequency bands after DAC processing is performed thereon, thereby solving the peak-to-average ratio problem of a signal caused by that an existing base station device uses a broadband power amplifier for a single channel and simultaneously supports multiple frequency bands. In combination with a digital pre-distortion solution, the linearity and efficiency of power amplification are ensured, thereby ensuring the feasibility of technologies of multiband application of the same system, inter-system common mode, and common platform implementation.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for peak clipping of multi-band broadband signals. Background technique [0002] With the high recognition of mobile operators at home and abroad and the large-scale commercial deployment in recent years, the network construction mode of BBU (Base Band Unit, baseband processing unit) + RRU (Radio Remote Unit, radio frequency remote unit) has shown fundamental changes Trends in traditional network architectures. [0003] Due to the differences in spectrum policies of various countries and regions, the spectrum resources obtained by corresponding global mobile operators are relatively scattered (including 900MHz / 1800MHz / 2100MHz / 2300MHz / 2600MHz, etc.), and they generally face the challenge of multi-standard and multi-band. Taking China Mobile as an example, in the TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous...

AI Technical Summary

Problems solved by technology

[0014] The embodiment of the present invention provides a method and device for peak clipping of multi-band broadband signals, which solves the problem of peak-to-average ratio of signals when a single channel of base station equipment adopts broadband power amplifiers in the existing technical solutions and supports multiple frequency bands at the same time.

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