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Signal transmission method and device

A signal transmission and data technology, applied in the field of communication, can solve problems such as high signal, severe signal, and distorted signal waveform

Active Publication Date: 2020-05-26
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This application provides a signal transmission method and device to solve the problem that the waveform distortion of the signal is relatively serious after PA power amplification due to the high PAPR of the signal

Method used

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Embodiment Construction

[0102] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0103] The signal transmission method provided by the embodiment of the present application can be applied to a communication system. The communication system involved in the embodiments of the present application may be various communication systems, for example, long term evolution (long term evolution, LTE), LTE evolution (LTE-Advanced), new radio (new redio, NR) system, narrowband IoT (narrowband IoT (narrowband IoT) Band internet of things, NB-IoT), enhanced machine type communication (enhanced machine type communication, eMTC) system, etc., it can also be a hybrid architecture of various communication systems, such as LTE and 5G hybrid architecture. Among them, NR may also be referred to as a fifth generation (5th generation) mobile communication syst...

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Abstract

The invention discloses a signal transmission method and device, which are used for solving the problem that the waveform distortion of a signal after PA power amplification is relatively serious dueto relatively high PAPR of the signal. The method comprises the steps: carrying out the phase rotation of M pieces of modulation data to obtain M pieces of phase rotation data, wherein the phase factor of the M pieces of modulation data for phase rotation is determined based on M; the method further comprises the steps of determining time domain data based on the M pieces of phase rotation data, and sending the time domain data to a receiving end.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a signal transmission method and device. Background technique [0002] In a communication system, the transmitting end performs power amplification through a power amplifier (power amplifier, PA) before sending a signal. Among them, the amplification function of PA to signal includes linear region and nonlinear region, such as figure 1 As shown, when the power of the input signal is small, it corresponds to the linear region of the PA, and when the power of the input signal is large, it corresponds to the nonlinear region of the PA. In the linear region, the amplification gain of the PA is constant, that is, the power ratio of the input signal before amplification and the output signal after amplification is constant, and the phase of the input signal and the output signal is the same. In the nonlinear region, the amplification gain of the PA decreases w...

Claims

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L27/2627H04L27/2628H04L27/2621H04L27/2636H04L27/20
Inventor 胡远洲汪凡
Owner HUAWEI TECH CO LTD