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Data processing method, device and system

A data processing and data technology, applied in the field of wireless communication, can solve the problems of transmission power reduction, vector magnitude error, signal distortion, etc.

Active Publication Date: 2018-04-06
HUAWEI TECH CO LTD
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Problems solved by technology

[0003] However, high peak-to-average power ratio (Peak-to-Average Power Ratio, PAPR) is an important problem in OFDM systems. Higher PAPR will cause signal distortion when the transmitted signal passes through the power amplifier (Power Amplifier, PA). Additional vector magnitude error (Error Vector Magnitude, EVM) is generated, which eventually degrades the demodulation performance of the receiving end
In order to reduce the EVM of the transmitted signal, the actual transmission power usually needs to be backed off to a certain extent, but the reduction of the transmission power will also lead to a decrease in the demodulation performance of the receiving end

Method used

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  • Data processing method, device and system

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Embodiment Construction

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0062] The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0063] The technology described in this application can be applied to the LTE system and subsequent evolution systems such as the 5th Generation mobile communication (5G), etc., or other technologies using Orthogonal Frequency Division Multiplexing (O...

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Abstract

The invention relates to the technical field of radio communication and particularly relates to a data processing method, device and system. According to the data processing method provided by the invention, a data sending device modulates a to-be-transmitted bit sequence and separates a real part and an imaginary part of a complex symbol obtained through modulation into two symbols, thereby forming a symbol sequence, carries out phase rotation on the symbols in the symbol sequence and then carries out sending through single carrier frequency division multiple access (SC-FDMA) symbols. According to the method, the device and the system, through separation of the real part and the imaginary part of transmission signals, a peak-to-average power ratio (PAPR) of the transmission signals of anorthogonal frequency division multiplexing (OFDM) system is reduced, so the link quality of the whole transmission system is improved.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a data transmission method, device and system in a wireless communication system. Background technique [0002] Based on the advantages of Orthogonal Frequency Division Multiplexing (OFDM) technology in combating multipath interference and compatibility with Multiple-Input Multiple-Output (MIMO), current wireless communication systems are widely used This technology, such as Long Term Evolution (Long Term Evolution, LTE), Worldwide Interoperability for Microwave Access (Worldwide Interoperability for Microwave Access, WiMAX) and other systems. [0003] However, high peak-to-average power ratio (Peak-to-Average Power Ratio, PAPR) is an important problem in OFDM systems. Higher PAPR will cause signal distortion when the transmitted signal passes through the power amplifier (Power Amplifier, PA). An additional vector magnitude error (Error Vector Magnit...

Claims

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L27/2614H04L27/20H04L27/361H04L27/3483H04L27/2636
Inventor 曾歆王宗杰胡远洲
Owner HUAWEI TECH CO LTD
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