Method and device for reducing PAPR based on distortion-free initial phase sequence of reserved symbol

A distortion-free, sequential technology, applied in digital transmission systems, electrical components, modulated carrier systems, etc., to solve problems such as data transmission errors

Active Publication Date: 2020-02-07
CHINA MOBILE COMM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to solve the traditional method of nonlinear distortion caused by PAPR in the existing OFDM system is to modulate all the data transmitted, so that the transmitted signal itself is a distorted signal, and the signal transmission process Once the medium is disturbed, it is easy to cause the error of data transmission

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  • Method and device for reducing PAPR based on distortion-free initial phase sequence of reserved symbol
  • Method and device for reducing PAPR based on distortion-free initial phase sequence of reserved symbol
  • Method and device for reducing PAPR based on distortion-free initial phase sequence of reserved symbol

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Embodiment Construction

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] figure 1 It is a schematic flowchart of the method for reducing PAPR based on the undistorted initial phase sequence of reserved symbols provided in this embodiment. see figure 1 , the method includes:

[0040] 101: When sending target data through OFDM, obtain a preset number of subcarriers as reserved subcarriers for carrying peak...

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Abstract

The embodiment of the invention discloses a method and device for reducing PAPR based on a distortion-free initial phase sequence of a reserved symbol. According to the method, when target data is sent through OFDM, a part of reserved subcarriers are reserved in advance and specially used for bearing peak elimination signals, and after the peak elimination signals and the target data are loaded tothe subcarriers, the peak elimination signals and the target data are sent after OFDM modulation. According to the method, the peak elimination signals and the target data are borne on different subcarriers to be sent, it is guaranteed that the sent target signal is distortion-free, the stability of the signal transmission process is improved, the distortion-free target signals can be obtained only by removing the signals on the reserved subcarriers when the received signals are processed, and the implementation is easy. And on the other hand, according to the method, the initial phase is used as a peak elimination signal, another method for generating the peak elimination signal is provided, and the initial phase and other types of peak elimination signals can be superposed to obtain abetter peak elimination effect.

Description

technical field [0001] The present invention relates to the technical field of wireless mobile communication, in particular to a method and device for reducing PAPR based on a reserved symbol-based undistorted initial phase sequence for domain name resolution. Background technique [0002] The high speed, high bandwidth, and high data volume characteristics of the 5G system require a large amount of wireless information bearing resources, and the expansion capabilities of information bearing resources such as time domain, air domain, code domain, and power domain are limited. It is foreseeable that as a frequency domain An important technology for resource application - Orthogonal Frequency Division Multiplexing (OFDM) will still be an important choice technology for wireless channel support in 5G systems. However, since the OFDM symbol is the addition of multiple independently modulated sub-carrier signals generated after IFFT mathematical transformation, the bandwidth of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L27/2623
Inventor 张长清
Owner CHINA MOBILE COMM GRP CO LTD
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