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Multi-carrier peak clipping processing method and device

A processing method and multi-carrier technology, applied in the field of communication, can solve problems such as severe signal EVM, signal distortion, and complex calculation of peak clipping processing, and achieve the effects of simplifying generation complexity, reducing signal distortion, and reducing deterioration

Active Publication Date: 2014-01-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a multi-carrier peak-shaving processing method and device to solve the problems of complex calculation of existing peak-shaving processing, severe signal EVM and serious signal distortion after peak-shaving

Method used

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  • Multi-carrier peak clipping processing method and device
  • Multi-carrier peak clipping processing method and device

Examples

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Embodiment 1

[0031] refer to figure 1 , shows a flow chart of steps of a multi-carrier peak clipping processing method according to Embodiment 1 of the present invention.

[0032] The multi-carrier peak clipping processing method in this embodiment includes the following steps:

[0033] Step S102: Obtain the total signal bandwidth and total occupied bandwidth of the corresponding multiple carriers according to the number of configured carriers and the signal bandwidth and occupied bandwidth of each carrier.

[0034] Among them, the signal bandwidth refers to the width of the signal spectrum, that is, the difference between the highest frequency component and the lowest frequency component of the signal, and the occupied bandwidth refers to the width occupied by the energy (power) emitted by the entire channel.

[0035] Step S104: Generate a digital filter with a set order according to the total signal bandwidth and the total occupied bandwidth of the multiple carriers, and obtain filter c...

Embodiment 2

[0041] refer to figure 2 , shows a flow chart of steps of a multi-carrier peak clipping processing method according to Embodiment 2 of the present invention.

[0042] The multi-carrier peak clipping processing method in this embodiment includes the following steps:

[0043] Step S202: Obtain the total signal bandwidth bs and the total occupied bandwidth bw of the corresponding multiple carriers according to the number of configured carriers and the signal bandwidth and occupied bandwidth of each carrier.

[0044] Step S204: compare the total signal bandwidth bs of multiple carriers with the sampling frequency f s The quotient of the digital filter is used as the left frequency point f1 of the digital filter, and the total occupied bandwidth bw of multiple carriers and the sampling frequency f s The quotient of is used as the right frequency point f2 of the digital filter.

[0045] That is, f 1 = bs fs ...

Embodiment 3

[0089] refer to Figure 9 , shows a structural block diagram of a multi-carrier peak clipping processing device according to Embodiment 3 of the present invention.

[0090] The multi-carrier peak clipping processing device in this embodiment includes: a first acquisition module 302, configured to acquire the total signal bandwidth of corresponding multiple carriers according to the number of configured multiple carriers and the signal bandwidth and occupied bandwidth of each carrier and the total occupied bandwidth; the second acquisition module 304 is used to generate a digital filter with a set order according to the total signal bandwidth and the total occupied bandwidth of multiple carriers, and obtain the filter coefficients of the digital filter; peak clipping processing module 306 , is used to use the filter coefficient as the peak clipping coefficient, and use the peak clipping coefficient to perform peak clipping processing on the peak-to-average ratio signals of mult...

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Abstract

The invention provides a multi-carrier peak clipping processing method and device. The multi-carrier peak clipping processing method comprises the steps of obtaining a total signal bandwidth and a total occupied bandwidth according to the carrier number of a plurality of carriers and signal bandwidths and occupied bandwidths of the carriers; generating a digital filter with a set order according to the total signal bandwidth and the total occupied bandwidth, and obtaining a filter coefficient of the digital filer; enabling the filter coefficient to serve as a peak clipping coefficient, and conducting peak clipping processing on peak-to-average ratio signals of the multiple carriers through the peak clipping coefficient. By means of the multi-carrier peak clipping processing method and device, generating complexity of the peak clipping coefficient is simplified, the degradation degree of the EVM is reduced, and the degree of signal distortion is also reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a multi-carrier peak clipping processing method and device. Background technique [0002] With the development of communication technology, 3G (3 rd -Generation, the third generation of mobile communication technology) technology has been widely used in wireless communication systems. At present, 3G wireless communication systems all use multi-carriers to expand cell capacity. In a multi-carrier cell, since the multi-carrier signals that need to be transmitted are linearly superimposed and combined in the digital intermediate frequency part, a set of transmitters is used for transmission. Therefore, a higher PAR (Peak to Average Ratio, peak-to-average ratio) signal will appear at the antenna transmitting end, which requires the power amplifier to have a larger linear region, resulting in a decrease in the efficiency of the power amplifier, which in turn increases...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L25/03
CPCH04L5/0092H04L5/001H04L27/2614H04L27/2624H03F1/02H03F3/24H04B1/0475H04B2001/045H04L27/2623
Inventor 熊军何艳辉孙华荣段滔王杰丽王策
Owner DATANG MOBILE COMM EQUIP CO LTD
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