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Signal transmitting method, receiving method, device and system in wireless communication

A technology for signal transmission and wireless communication, applied in the field of receiving methods, signal transmission methods, devices and systems, capable of solving problems such as degradation of demodulation performance at the receiving end, degradation of demodulation performance, and reduction of transmission power

Active Publication Date: 2018-10-09
HUAWEI TECH CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, CM will lead to signal distortion when the transmitted signal passes through the power amplifier (Power Amplifier, PA), and 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 transmit power usually needs to be backed off to a certain extent, but the reduction of the transmit 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 decline in demodulation performance

Method used

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  • Signal transmitting method, receiving method, device and system in wireless communication
  • Signal transmitting method, receiving method, device and system in wireless communication
  • Signal transmitting method, receiving method, device and system in wireless communication

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Embodiment Construction

[0348] 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.

[0349] 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. Such as 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...

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Abstract

The invention discloses a signal transmitting method, a signal receiving method, a device and a system in wireless communication. The invention relates to the technical field of wireless communications, in particular to a data processing method, a device and a system. According to the data processing method provided by the invention, transmission equipment uses a sequence to carry data and reference signals respectively; the transmission equipment carries two paths of data to odd elements and even elements of the sequence respectively; and after the transmission equipment continuously maps thesequence carrying the two paths of data to allocated subcarriers, the data is transmitted by means of an orthogonal frequency division multiplexing (OFDM) manner. The signal transmitting method, thesignal receiving method, the device and the system aim to reduce the cubic metric (CM) / peak-to-average ratio of a transmitted signal of an orthogonal frequency division multiplexing (OFDM) system by means of sequence design and the mapping of the two paths of data to the subcarriers, thereby improving the link quality of a whole 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 (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 is supported to transmit a Physical Uplink Control Channel (PUCCH) on one OFDM symbol, and on this OFDM symbol, at the same time Send a reference signal (ReferenceSignal, RS) and uplink c...

Claims

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Application Information

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Patent Type & Authority Applications(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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