A multi-rate burst adaptive communication device suitable for microwave communication

Abstract

The invention discloses a multi-rate burst self-adaptive communication device suitable for microwave communication. The device includes an auxiliary multiplexer, a spread-spectrum modulator, a single-carrier modulator, a waveform selector, an up-converter, and an intermediate-frequency loop frequency conversion Converter, Frequency Selector, D / A Converter, AGC, Band Pass Filter, A / D Converter, Down Converter, Spread Spectrum Demodulator, Single Carrier Demodulator, Rate Selector and Channel Estimation Controller. In the present invention, the channel estimation controller selects the spread spectrum technology or the single-carrier frequency domain equalization technology under different stream rates, and obtains the current state parameters of the channel according to the real-time signal estimation to ensure that the channel realizes lossless transmission, and at the same time sets the intermediate frequency In the modulation process, the ring frequency converter can realize the self-test and debugging of the intermediate frequency ring. The invention has the characteristics of lossless communication switching and accuracy, and simultaneously requires a burst and rate self-adaptive communication system.

Description

technical field [0001] The invention relates to a channel cognition and burst self-adaptive transmission device in a microwave relay communication system, and is particularly suitable for a communication system that requires high communication quality, complex rate conversion, and simultaneously requires burst and rate self-adaptation. Background technique [0002] In the traditional microwave relay communication technology, the point-to-multipoint TDMA technology is usually used, and the communication rate is relatively fixed. Generally, the fixed communication rate is set according to the communication distance and the change of the communication environment to realize real-time communication. This communication method is relatively stable but The ability to change with the environment is poor, and the communication rate is fixed, which cannot meet higher communication quality, and the rate conversion is complicated. At the same time, a burst and rate adaptive microwave rel...

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Problems solved by technology

[0002] In the traditional microwave relay communication technology, the point-to-multipoint TDMA technology is usually used, and the communication rate is relatively fixed. Generally, the fixed communication rate is set according to the communication distance and the change of the communication environment to realize real-time communication. This communication method is relatively stable but The ability to change with the environment is poor, and the communication rate is fixed, which cannot meet higher communication quality, the rate conversion is complicated, and a microwave relay communication system that requires both burst and rate adaptation

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