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A 16apsk modulation system measurement and control transmitter efficiency improvement method

A 16APSK, transmitter technology, applied in the field of improving the efficiency of the 16APSK modulation system measurement and control transmitter, can solve the problems of high energy consumption of the transmitter, poor matching degree of power amplifier efficiency curve characteristics, etc., and achieve the effect of eliminating inter-symbol interference

Active Publication Date: 2022-02-08
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the 16APSK modulation system in the field of wireless measurement and control communication, there is still the problem of high energy consumption of the transmitter, and the probability distribution of the modulated signal power does not match the characteristic of the power amplifier efficiency curve.

Method used

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  • A 16apsk modulation system measurement and control transmitter efficiency improvement method
  • A 16apsk modulation system measurement and control transmitter efficiency improvement method
  • A 16apsk modulation system measurement and control transmitter efficiency improvement method

Examples

Experimental program
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Effect test

Embodiment 1

[0059] A method for improving the efficiency of a 16APSK modulation system measurement and control transmitter, comprising the following steps:

[0060] a. Realize constellation mapping of 16APSK modulation system

[0061] The constellation diagram of the 16APSK modulation system is composed of two concentric circles, and PSK signal points are equally spaced on each concentric circle;

[0062] b. Complete signal shaping and filtering

[0063] After constellation mapping, the digital baseband IQ signal is in the form of a rectangular pulse, and the root-raised cosine roll-off filter is selected to complete the pulse shaping; after shaping filtering, the signal bandwidth is compressed to eliminate inter-symbol interference;

[0064] c. Analyze the statistical characteristics of the signal

[0065] By intercepting the baseband signal data after pulse shaping, the probability distribution histogram of the signal power is calculated or the probability distribution curve of the si...

Embodiment 2

[0076] A method for improving the efficiency of a 16APSK modulation system measurement and control transmitter, comprising the following steps:

[0077] a. Realize constellation mapping of 16APSK modulation system

[0078] The constellation diagram of the 16APSK modulation system is composed of two concentric circles, and PSK signal points are equally spaced on each concentric circle;

[0079] b. Complete signal shaping and filtering

[0080] After constellation mapping, the digital baseband IQ signal is in the form of a rectangular pulse, and the root-raised cosine roll-off filter is selected to complete the pulse shaping; after shaping filtering, the signal bandwidth is compressed to eliminate inter-symbol interference;

[0081] c. Analyze the statistical characteristics of the signal

[0082] By intercepting the baseband signal data after pulse shaping, the probability distribution histogram of the signal power is calculated or the probability distribution curve of the sign...

Embodiment 3

[0097] A method for improving the efficiency of a 16APSK modulation system measurement and control transmitter, comprising the following steps:

[0098] a. Realize constellation mapping of 16APSK modulation system

[0099] The constellation diagram of the 16APSK modulation system is composed of two concentric circles, and PSK signal points are equally spaced on each concentric circle;

[0100] b. Complete signal shaping and filtering

[0101] After constellation mapping, the digital baseband IQ signal is in the form of a rectangular pulse, and the root-raised cosine roll-off filter is selected to complete the pulse shaping; after shaping filtering, the signal bandwidth is compressed to eliminate inter-symbol interference;

[0102] c. Analyze the statistical characteristics of the signal

[0103] By intercepting the baseband signal data after pulse shaping, the probability distribution histogram of the signal power is calculated or the probability distribution curve of the si...

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Abstract

The invention discloses a method for improving the efficiency of a 16APSK modulation system measurement and control transmitter, which belongs to the technical field of wireless measurement and control communication, and comprises the following steps: a. realizing constellation mapping of a 16APSK modulation system; b. completing signal shaping and filtering; c. performing signal statistical feature analysis ; d, realize the optimal design of the Doherty power amplifier efficiency curve; e, complete the analysis and calculation of the average efficiency of the power amplifier; f, judge whether the average efficiency of the power amplifier is better than the design target; if the average efficiency of the power amplifier obtained in step e is better than the design target, then complete the launch The efficiency improvement design process of the power amplifier; otherwise, return to step d, and continue to optimize the efficiency curve of the Doherty power amplifier. The invention has good matching degree between the power probability distribution of the modulated signal and the characteristic of the power amplifier efficiency curve, can effectively improve the working efficiency of the measurement and control transmitter of the modulation system, and reduce the energy consumption of the transmitter.

Description

technical field [0001] The invention relates to the technical field of wireless measurement and control communication, in particular to a method for improving the efficiency of a measurement and control transmitter of a 16APSK modulation system. Background technique [0002] The transmitter is an important component of aerospace and aviation measurement and control systems. Spectrum efficiency and energy efficiency are important indicators to measure the advanced nature of its performance. On the one hand, the data transmission rate of wireless measurement and control services has been increasing continuously in recent years, and the contradiction between this service demand and the current tight spectrum resources has become increasingly prominent. In order to improve spectrum utilization, it is necessary to adopt a high-order modulation system, and at the same time reduce the sensitivity of the modulated signal to nonlinear channels and the complexity of demodulation. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/36
CPCH04L27/36
Inventor 曹韬霍飞向熊波涛刘友江
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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