Integrated waveform coexistence transmission system of measurement and control signal and ofdm signal

Abstract

An integrated waveform coexistence transmission system for measurement and control signals and OFDM signals disclosed in the present invention aims to provide a high-speed, real-time, and reliable transmission waveform coexistence transmission system. The data information bits generated by the information module are amplitude modulated by the LDPC coding module and the QAM modulation module, and the OFDM module generates an orthogonal multiplexed OFDM signal. Superposition; after the measurement and control information module on the measurement and control link is modulated by the convolutional coding module, the BPSK modulation module and the spectrum spread by the spread spectrum module, the BPSK signal stream is mapped to the carrier, and after the power adjustment, together with the data signal in the channel superposition module The power domain superposition is completed, and the superposition forms an integrated waveform signal in which the spread spectrum measurement and control signal and the orthogonal frequency division multiplexing OFDM signal coexist.

Description

technical field [0001] The invention relates to an integrated transmission and access system of measurement and control data transmission based on power domain superposition, which can be used in the technical fields of aviation, aerospace measurement and control communication, etc. Waveform transmission and access system. Background technique [0002] With the development of aviation and aerospace, the construction of the integration system of space and earth, and the continuous emergence of new measurement and control technologies, and the coexistence of various measurement and control signal systems has emerged, resulting in the various stages of testing of remote sensing, remote control and data transmission systems. The tasks are getting more and more difficult, and the task cycle is getting tighter. Especially with the further integration of measurement and control technology and wireless communication technology, the increase of the number of access measurement and c...

AI Technical Summary

Problems solved by technology

The 5G communication system can meet the current large-capacity and high-speed communication needs in terms of system delay, access quantity, and transmission rate, and achieve ultra-high spectrum utilization. However, based on OFDM waveform subcarriers, orthogonal superposition and other Relevant physical characteristics, it is difficult to meet the high-precision measurement requirements

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