Signal clipper and its method

A clipping and signal technology, which is applied in the field of signal processing, can solve problems such as the difficulty of programmable gate arrays, achieve remarkable results, reduce design difficulty and design cost, and achieve low signal peak-to-average ratio

Inactive Publication Date: 2010-02-17
HUAWEI TECH CO LTD
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  • Abstract
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This puts forward high requirements for real-time performance, which is not suitable for hardware implementation, and adds ...

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  • Signal clipper and its method
  • Signal clipper and its method
  • Signal clipper and its method

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Embodiment Construction

[0063] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0064] The present invention expands the existing PCF technology, by performing a limiting and clipping on the input signal first, and then applying the PCF technology to the input signal after the limiting and clipping, so that the prediction is more effective, that is, after the clipping process While predicting the change of the input signal, it can also predict the interpolation effect of the subsequent PSF link, including the prediction of the effect of combining in multi-carrier signal applications, so as to obtain better clipping performance. The above-mentioned method may be called the combination of clipping prediction and clipping filtering (CPCF) technology. The present invention can also be regarded as an extension of the existing CF technology, by per...

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Abstract

This invention discloses a signal clipping device. It comprises a filter clipping processor used to make first filtering and clipping to the input signal; a prediction clipping processor used to makeone or more than one prediction and clipping process to the input signal and sends the output signal being through the prediction and clipping process to the above filtering and clipping processor. The invention also discloses a method by using the above device. The invention raises a new technology combining the cascade connection clipping prediction with filter clipping, and can effectively solve the disadvantage existing in current technology that is at condition of losing certain signal domain performance the ideal peak-to-average power ratio can not be obtained. The invention can get lower peak-to-average power ratio.

Description

technical field [0001] The invention relates to signal processing of a communication system, in particular to a signal clipping device and method for reducing the signal peak-to-average ratio. Background technique [0002] At present, clipping technology can be divided into 1-time speed (1X) clipping and n-time speed (nX) clipping according to the characteristics of processing samples; according to the processing method, it can be divided into the method of combining clipping and filtering (CF), And the combination of prediction, clipping and filtering (PCF) method. [0003] The advantage of 1X clipping technology is that there is no need to consider the signal spectrum spread caused by clipping in the subsequent process, because the subsequent pulse shaping filter (PSF) link will process the clipped signal to obtain a standard that meets the requirements of the communication system spectrum signal. However, the disadvantage of the 1X clipping technology is that the damage...

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Application Information

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IPC IPC(8): H04L25/08H04B15/00
Inventor 顾伟东
Owner HUAWEI TECH CO LTD
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