Multi-rate burst self-adaptive communication device suitable for microwave communication

Abstract

The invention discloses a multi-rate burst self-adaptive communication device suitable for microwave communication. The multi-rate burst self-adaptive communication device comprises an auxiliary multiplexer, a spread spectrum modulator, a single carrier modulator, a waveform selector, an up-converter, an intermediate frequency ring converter, a frequency conversion selector, a D / A changer, an AGC, a band-pass filter, an A / D changer, a down-converter, a spread spectrum demodulator, a single carrier demodulator, a rate selector and a channel estimation controller. The channel estimation controller is used for selecting the spread spectrum technology or the single carrier frequency domain balancing technology at different code stream rates, the current state parameter of a channel is obtained according to real-time signals, lossless transmission of the channel is guaranteed, and intermediate frequency ring self-testing debugging can be achieved in the modulating process through the intermediate frequency ring converter. The multi-rate burst self-adaptive communication device has the advantages of lossless channel switching and accuracy, and a burst and rate self-adaptive communication system is achieved.

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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