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Data modulation method and device, data demodulation method and device, service node, terminal and medium

A technology of data modulation and modulation mode, which is applied in the direction of modulating carrier system, phase modulating carrier system, adjusting transmission rate, etc., and can solve problems such as large power influence, low efficiency, and high peak-to-average ratio

Pending Publication Date: 2020-11-06
ZTE CORP
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Problems solved by technology

[0002] In high-frequency scenarios such as the fifth generation mobile communication (Fifth Generation, 5G) system, a single carrier can be used for downlink transmission. In this case, some terminals are far away from the service node, and some terminals are far away from the service node. The distance is relatively short, and the modulation methods used by these terminals are different. For the modulation method with higher transmission power, the peak-to-average ratio is often higher, and the power of the data after passing through the power amplifier is also greatly affected. In order to meet the requirements of the power amplifier in the linear working area To improve the linearity of the power amplifier, it is necessary to back off the input power of the power amplifier by a certain decibel during the data modulation process, so that the power amplifier is far away from the saturation area, so as to realize the power back. However, the efficiency of this modulation method is very low. Low, and the degree of improvement is limited, and the working characteristics cannot be guaranteed

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  • Data modulation method and device, data demodulation method and device, service node, terminal and medium
  • Data modulation method and device, data demodulation method and device, service node, terminal and medium
  • Data modulation method and device, data demodulation method and device, service node, terminal and medium

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[0038] The application will be described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other. In addition, it should be noted that, for the convenience of description, only some structures related to the present application are shown in the drawings but not all structures.

[0039] For the downlink transmission of a single-carrier system, when the distance between different terminals and the serving node is different, the modulation method of the data will also be different. The peak-to-average ratio of the high-order modulation method is often high, and it is also greatly affected by the power amplifier. How to improve the perf...

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Abstract

The invention provides a data modulation method and device, a data demodulation method and device, a service node, a terminal and a medium. The data modulation method comprises the steps of: determining a modulation parameter A according to a data modulation mode; and modulating data according to a target constellation point symbol, wherein the target constellation point symbol is a product of A and X, and X is an initial constellation point symbol corresponding to the modulation mode.

Description

technical field [0001] The present application relates to a wireless communication network, for example, to a data modulation and demodulation method, device, service node, terminal, and medium. Background technique [0002] In high-frequency scenarios such as the fifth generation mobile communication (Fifth Generation, 5G) system, a single carrier can be used for downlink transmission. In this case, some terminals are far away from the service node, and some terminals are far away from the service node. The distance is relatively short, and the modulation methods used by these terminals are different. For the modulation method with higher transmission power, the peak-to-average ratio is often higher, and the power of the data after passing through the power amplifier is also greatly affected. In order to meet the requirements of the power amplifier in the linear working area To improve the linearity of the power amplifier, it is necessary to back off the input power of the ...

Claims

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Application Information

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IPC IPC(8): H04L27/34H04L27/18H04L1/00
CPCH04L27/3411H04L27/3416H04L27/186H04L1/0003H04L27/2634H04L27/2614H04L27/20
Inventor 华健辛雨暴桐
Owner ZTE CORP
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