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Signal transmission method, reception method, device and system in wireless communication

A technology of signal transmission and wireless communication, which is applied in the direction of transmission path separation device, transmission system, multi-frequency code system, etc. It can solve the problems of demodulation performance degradation, transmission power reduction, signal distortion, etc., and achieve the goal of improving link quality Effect

Active Publication Date: 2021-06-01
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, CM will cause signal distortion when the transmitted signal passes through the power amplifier (Power Amplifier, PA), and an additional vector magnitude error (Error Vector Magnitude, EVM) will be generated at the transmitting end, which will eventually degrade 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
Or a high peak-to-average ratio (Peak to Average PowerRatio, PAPR) will lead to a reduction in transmit power, which will lead to a decrease in demodulation performance

Method used

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  • Signal transmission method, reception method, device and system in wireless communication
  • Signal transmission method, reception method, device and system in wireless communication
  • Signal transmission method, reception method, device and system in wireless communication

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Embodiment Construction

[0350] 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.

[0351] 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 (OFDM) The wireless communication system with advanced technology is especially suitable for communication systems that need to reduce the CM value of the transmitted signal. like figure 1 Shown is a schematic diagram of a possible application scenario of the present application. as figure 1 The communication system shown is taken as an example, and the communication system 100 includes at least one network device 20 (for example, including a base station) and multiple terminal devices 10 (10A and 10B). The multiple terminal de...

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Abstract

The present application relates to the technical field of wireless communication, and in particular to a data processing method, device and system. The present application provides a data processing method. A sending device uses a sequence to carry data and a reference signal respectively. The sending device bears two channels of data respectively on odd elements and even elements of the sequence. The sending device continuously maps the sequences carrying the two channels of data onto allocated subcarriers, and then sends them in a manner of Orthogonal Frequency Division Multiplexing (OFDM). This application aims to reduce the cubic metric (CM) / peak-to-average ratio of the transmitted signal of the Orthogonal Frequency Division Multiplexing (OFDM) system through the sequence design and the mapping of the subcarriers of the two channels of data , thereby improving the link quality of the entire transmission system.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a signal sending method, receiving method, device and system in a wireless communication system. Background technique [0002] Based on Orthogonal Frequency Division Multiplexing (OFDM) technology, it has advantages in resisting multipath interference and being compatible with Multiple-Input Multiple-Output (Multiple-Input Multiple-Output, MIMO). Most current wireless communication systems adopt 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] In the next-generation communication system, such as the 5th Generation mobile communication (5G), it supports sending a Physical Uplink Control Channel (PUCCH) on one OFDM symbol, and on this OFDM symbol, at the same time Send a reference signal (Reference...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L27/26
CPCH04L5/0044H04L27/2628H04L27/2621H04L5/0007H04L27/2607H04L27/2614
Inventor 曲秉玉孙昊
Owner HUAWEI TECH CO LTD
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