Measurement and control signal and OFDM signal integrated waveform coexistence transmission system

Abstract

The invention discloses a measurement and control signal and OFDM signal integrated waveform coexistence transmission system, and aims to provide a high-speed, real-time and reliable-transmission waveform coexistence transmission system, which is realized through the following technical scheme: in a data link, data information bits generated by a data information module are subjected to amplitudemodulation through an LDPC encoding module and a QAM module; an OFDM module generates an orthogonal multiplexing signal, and the OFDM signal and the measurement and control signal are subjected to rate adjustment by a power adjustment module to complete superposition of a power domain in a channel superposition module; a measurement and control information module on a measurement and control linkmaps a BPSK signal flow to a carrier after being modulated by a convolutional encoding module and a BPSK modulation module and spread by a spread spectrum module, and the power domain superposition ofthe BPSK signal flow and a data signal is completed in a channel superposition module after power adjustment. An integrated waveform signal in which the spread spectrum measurement and control signaland the OFDM signal coexist is formed through superposing.

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. [0002] technical background [0003] 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 measureme...

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

Images