Intermediate frequency signal processing device and communication system

Abstract

The invention relates to an intermediate frequency signal processing device and a communication system. The intermediate frequency signal processing device comprises an indoor unit, an analog intermediate frequency signal transmission medium and an outdoor unit. The indoor unit comprises a sending end multi-carrier simulation intermediate frequency sending interface module and a receiving end multi-carrier simulation intermediate frequency receiving interface module. The outdoor unit comprises a sending end multicarrier simulation intermediate frequency receiving interface module, a sending channel multicarrier frequency conversion aggregation module, a receiving channel multicarrier frequency conversion separation module and a receiving end multicarrier simulation intermediate frequency sending interface module. According to the invention, digital intermediate frequency signals can be transmitted to the outdoor unit for intermediate frequency signal processing, the outdoor unit is prompted to achieve rapid response according to changes of a transmit-receive channel and an air interface channel, and the system performance is improved; moreover, aggregation and separation transceiving processing of a plurality of carrier signals with any bandwidth and any frequency point can be achieved in a single intermediate frequency signal processing device, the flexibility is high, the aggregatable spectrum range is wide, and the equipment and engineering investment is reduced.

Description

technical field [0001] The application belongs to the technical field of microwave communication, and in particular relates to an intermediate frequency signal processing device and a communication system. Background technique [0002] Microwave Communication (Microwave Communication) is communication using microwaves, electromagnetic waves with a wavelength between 1 millimeter and 1 meter. The frequency range corresponding to the electromagnetic wave in this wavelength band is 300 MHz (0.3 GHz) to 300 GHz. Microwave communication has the characteristics of available frequency bandwidth, large communication capacity, small transmission damage, strong anti-interference ability, etc., and can be used in point-to-point, point-to-multipoint or broadcast communication methods. Traditional split microwave communication is used to connect IDU (indoor unit) equipment and ODU (outdoor unit) equipment through intermediate frequency cables. The IDU integrates the baseband processing...

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Problems solved by technology

[0004] In order to overcome at least to a certain extent the traditional split microwave communication, the intermediate frequency analog filter has limited suppression ability, the receiving frequency of the intermediate frequency cable is too low, and the interval between the transmitting and receiving frequency points is too narrow to support the transmission and reception of signals with a bandwidth above 120M, and it is impossible to realize multiple carriers The transmission and reception of broadband signals after signal aggregation cannot support the capacity requirements of 5G microwave applications; and, due to the narrow bandwidth of a single transmission and reception channel, it does not support multi-carrier aggregation transmission and reception, and large-capacity transmission requires multiple independent microwave link devices to be stacked and bound as One link is used, the equipment investment cost is high, the power consumption is high, and the engineering installation is difficult. The application provides an intermediate frequency signal processing device and a communication system

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