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

Peak clipping method and device

A technology of wave crest and crest factor, applied in the field of peak clipping methods and devices, can solve the problems of low power amplifier efficiency, high power amplifier pressure, large signal peak-to-average ratio, etc.

Active Publication Date: 2018-10-16
DATANG MOBILE COMM EQUIP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The signal peak-to-average ratio in this multi-mode device will be very large. If peak clipping is not performed, the pressure on the power amplifier will be very high, it will be difficult to output the required power, and the efficiency of the power amplifier will be very low.

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
  • Peak clipping method and device
  • Peak clipping method and device
  • Peak clipping method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Embodiments of the present application provide a peak-shaving method and device, which are used to reduce the signal peak-to-average ratio in a multi-mode device, thereby improving power amplifier efficiency.

[0029] A method of peak clipping provided by the embodiment of the present application, such as figure 1 shown, including:

[0030] S101. Perform shaping filtering on the first mode signal and the second mode signal respectively; wherein, the bandwidth of the first mode signal is smaller than the bandwidth of the second mode signal, and the baseband signal of the first mode signal is clipped before performing shaping filtering ;

[0031] Wherein, the bandwidth of the signal in the first mode is smaller than the bandwidth of the signal in the second mode, for example, the signal bandwidths of the signals in the two modes differ by more than 10 times.

[0032] S102. Perform interpolation filtering, frequency shifting and combining on the shaped and filtered first...

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

The invention discloses a peak clipping method and device, which are used for reducing a signal peak-to-average ratio in multimode equipment in order to improve the power amplifier efficiency. The peak clipping method provided by the invention comprises the following steps of respectively shaping and filtering a first mode signal and a second mode signal, wherein the bandwidth of the first mode signal is smaller than the bandwidth of the second mode signal; carrying out peak clipping on a baseband signal of the first mode signal and shaping and filtering; and carrying out interpolation filtering and frequency shifting and combining on the first mode signal and the second mode signal after shaping and molding, and carrying out intermediate frequency peak clipping.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a peak clipping method and device. Background technique [0002] With the development of mobile communication, in order to meet the needs of different users and different scenarios, there are situations in which multiple modes of the mobile communication system work at the same time. In the process of developing from 4G mobile communication system to 5G mobile communication system, the Internet of Things is an important mobile network application scenario. In order to implement the Internet of Things, a narrowband Internet of Things (Narrow Band Internet of Things, NB-IoT) mode is added in 3GPP standard release (R) 13. NB-IoT downlink also adopts Orthogonal Frequency Division Multiplex (OFDM) multi-carrier adjustment method like Long Term Evolution (LTE). One NB-IoT carrier only needs one physical resource block (Physical Resource Block, PRB) , 12 subcarr...

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
IPC IPC(8): H04L27/26
CPCH04L27/2623
Inventor 孙华荣
Owner DATANG MOBILE COMM EQUIP CO LTD