Unlock instant, AI-driven research and patent intelligence for your innovation.

Signal crest reduction method and equipment

A signal and wave peak technology, which is applied in the field of signal wave peak removal, can solve the problems of long delay, difficult effective peak clipping, and large resources of loop limiting filter algorithm, etc., and achieves the effect of small processing delay

Active Publication Date: 2013-07-24
DATANG MOBILE COMM EQUIP CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] In the above-mentioned prior art, the above-mentioned algorithms all have their own defects, which are difficult to implement well. For example, the PC-CFR algorithm is difficult to effectively cut the peak in the case of non-continuous allocation of subcarriers; the NS-CFR algorithm consumes many resources. And the peak value is easy to reappear; the loop limiting filter algorithm has large resources and long delay, which is difficult to realize by FPGA

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Signal crest reduction method and equipment
  • Signal crest reduction method and equipment
  • Signal crest reduction method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0067] The present invention proposes a method for removing signal peaks, comprising the following steps:

[0068] After the IFFT transformation is performed on the physical layer signal, the sidelobe compression peak clipping RC1 operation is performed; the digital upconverter DUC intermediate frequency filtering is performed on the signal subjected to the sidelobe compression peak clipping RC1 operation; the signal after the DUC intermediate frequency filtering is performed Perform sidelobe compression peak clipping RC2 operation.

[...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for signal peak cancellation is disclosed, which includes the following steps: after Inverse Fast Fourier Transform(IFFT) is performed on physical layer signals, First side lobe peak Reduction and Compression (RC1) operation is performed (S101); after the First side lobe peak Reduction and Compression operation is performed on the signals, Digital Up-Conversion (DUC) intermediate frequency filtering is performed (S102); after the DUC intermediate frequency filtering is performed on the signals, Second side lobe peak Reduction and Compression (RC2) operation is performed (S103); wherein, the First side lobe peak Reduction and Compression operation includes main lobe peak reduction operation, the Second side lobe peak Reduction and Compression operation includes full lobe peak reduction operation. By the invention, the peak power in any sub-carrier configuration can be reduced, less hard device resource is consumed, and processing delay is less.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular, the present invention relates to a method and equipment for removing signal peaks. Background technique [0002] In a mobile communication system, in order to transmit wireless signals without distortion, the linearity of the transmitter is very high. When the PAPR (Peak to Average Power Ratio) of the signal transmitted by the system is too large, the excessive power It will cause a lot of waste. Secondly, too large peak-to-average ratio will make the performance of the system deteriorate sharply. Too large peak-to-average ratio will directly affect the operating cost and efficiency of the entire system. Therefore, it is necessary to find a way to reduce the peak-to-average power ratio. In addition, when the signal is composed of multiple subcarriers, if the peak-to-average ratio of the subcarriers is too high, it will cause nonlinear distortion of the signal, destroy th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L25/03
CPCH04L27/2614
Inventor 熊军肖鹏
Owner DATANG MOBILE COMM EQUIP CO LTD