A method for reducing peak to average ratio of multicarrier

A multi-carrier and wave peak technology, applied in the field of communication systems, can solve the problems of gain adjustment, no explanation, etc., and achieve the effect of improving efficiency, convenient implementation, and good clipping effect

Inactive Publication Date: 2007-05-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, the technical invention patent does not specify how to adjust the gain of each carrier matched filter coefficient, and how to adjust each carrier matched filter coefficient in real time, especially how to adjust each matched filter in system implementation gain

Method used

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  • A method for reducing peak to average ratio of multicarrier
  • A method for reducing peak to average ratio of multicarrier
  • A method for reducing peak to average ratio of multicarrier

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Embodiment Construction

[0028] The present invention can be fully explained and understood by the detailed description provided below in conjunction with the accompanying drawings, and the features, properties and advantages of the present invention will become more apparent.

[0029] In the wireless transmitter of the wireless communication system, the clipping technique is used to reduce the peak-to-average ratio of multi-carrier signals entering the power amplifier, so as to improve the efficiency of the power amplifier and reduce the cost of the power amplifier.

[0030] Please refer to Figure 1. This figure is a schematic diagram of the location of the multi-carrier signal generating device 300 and the multi-carrier clipping device 400 in the present invention. A multi-carrier signal is formed by superimposing multiple single-carrier signals. For each single-carrier signal, its generation process is the same, so only the generation process of one of the single-carrier signals is used for illustr...

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Abstract

This invention provides one method to lower multi-load peak proportion, which comprises the following steps: generating hard limit range signals according to input multi-load integral signal and valve values; generating peak offset signals according to retard multi-load signals; matching filter parameters generation and updating; matching multi-load peak value offset signals for matching; mixing the peak offset signals and multi-load integral signals.

Description

【Technical field】 [0001] The invention relates to a communication system, in particular to a method for reducing the peak-to-average ratio of multi-carrier peak signals entering a power amplifier. 【Background technique】 [0002] As we all know, a transmitter of a wireless base station in a mobile communication system uses a power amplifier to transmit signals to compensate for signal attenuation caused by propagation distance. The power amplifier has a certain linear region, and the cost of the power amplifier is determined by the size of its linear region. A signal with a peak-to-average ratio will reduce the efficiency of the power amplifier and increase power consumption, which puts high demands on the linearity of the power amplifier. In order to ensure that the power amplifier works in the linear region to improve its efficiency, the peak-to-average ratio of the signal entering the power amplifier is required to be below a certain range. [0003] In mobile communicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
Inventor 游爱民
Owner ZTE CORP
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