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Crest clipping method and equipment for multiband broadband signal

A broadband signal, multi-band technology, applied in the field of communication, to achieve the effect of ensuring linearity and efficiency

Active Publication Date: 2012-05-02
DATANG MOBILE COMM EQUIP CO LTD
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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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  • Crest clipping method and equipment for multiband broadband signal
  • Crest clipping method and equipment for multiband broadband signal
  • Crest clipping method and equipment for multiband broadband signal

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Embodiment Construction

[0036]As mentioned in the background technology, the existing technical solutions using independent power amplifiers have the defects of large size, low efficiency, and high cost, while the technical solutions for base station equipment using broadband power amplifiers in a single channel and supporting signals in multiple frequency bands at the same time, although The above problems can be solved, but there will be a problem that the peak-to-average ratio after DAC processing cannot be guaranteed when the DAC inlet peak-to-average ratio is guaranteed, which affects the specific application effect and the technical standard requirements of the actual implementation process.

[0037] In order to overcome such defects, the embodiment of the present invention proposes a peak clipping method for multi-band broadband signals, by predicting the peak value of multi-band broadband signals after DAC processing in advance, and pre-cutting the signals of corresponding frequency bands to en...

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Abstract

The embodiment of the invention discloses a crest clipping method and crest clipping equipment for a multiband broadband signal. By applying the technical scheme of the embodiment of the invention, a crest value of a received multiband multi-carrier signal which is processed by a digital to analog converter (DAC) is forecasted; corresponding crest pre-clipping processing is performed according to a forecast result, and a crest factor of the received multiband multi-carrier signal processed by the DAC is ensured; therefore, the problem of the crest factor of the signal because the single channel of the conventional base station equipment adopts a broadband power amplifier and supports multiple bands at the same time is solved; the linearity and the efficiency of the power amplifier are guaranteed by using a digital predistortion scheme; and a multiband application technology of the same system, a common mode technology of different systems and a common platform implementation technology are feasible.

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...

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L27/26H04L27/2624H04L27/2647
Inventor 熊芳孙华荣陈东马艳君
Owner DATANG MOBILE COMM EQUIP CO LTD
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