Digital wireless communication system of tropospheric scatter

Abstract

Characters of the invention are as follows. Channel-power amplifier and low noise amplifier module in channel 1 are connected to channel-up / down conversion and frequency synthesis module 2, which is connected to antenna and amplitude control module 8 as well as frequency merging and modem module 3. Power amplifier in channel 2 and low noise amplifier module 7 are connected to the up / down conversion and frequency synthesis module 6 in channel 2, which are connected to antenna and amplitude control module 8 as well as frequency merging and modem module 3. The frequency merging and modem module 3 are connected to channel control module 9 and terminal 5 of spread spectrum in multiplexing. Advantages are: better anti nuclear explosion, anti damage capability and interference rejection, stable communication, long communication distance and good security.

Description

Technical field: [0001] The invention relates to the technical field of communication information systems, in particular to digital tropospheric scatter wireless communication systems. Background technique: [0002] At present, the use of tropospheric scatter wireless communication in the field of digital wireless communication is the exploratory stage. Digital microwave communication is a wireless transmission method. The main problem is that it uses arbitrary space microwaves to conduct radio waves. Therefore, there are interference problems and communication distance problems. The connection between mobile communication base stations and communication base stations is realized through microwave relay base stations. This is because Microwave communication is short-distance (line-of-sight) communication, and has poor anti-interference and confidentiality. In order to achieve the purpose of relay communication by the base station, its structure is relatively complicated, so micro...

AI Technical Summary

Problems solved by technology

As a wireless transmission method, digital microwave communication, the main problem is that it uses microwaves in any space to conduct radio waves, so there are interference problems and communication distance problems. The connection between the mobile communication base station and the communication base station is realized through the microwave relay base station. This is because Microwave communication is a short-distance (line-of-sight) communication, and its anti-interference and confidentiality are poor. In order to achieve the purpose of relay communication by the base station, its structure is relatively complicated, so microwave communication has its shortcomings.

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