An adaptive co-location interference suppression system and method capable of reducing notch bandwidth

Abstract

The present invention discloses an adaptive co-site disturbance suppression system and method capable of reducing the notch bandwidth. The co-site disturbance suppression system comprises a coupler 1, an orthogonal power divider 1, an orthogonal power divider 2, an adjustable attenuator 1, an adjustable attenuator 2, a correlator 1, a correlator 2, a detection unit 1, a detection unit 2, a controller, a synthesizer and a coupler 2. The adaptive control of calculating, determining, locking and releasing is carried out on the control amount of the adjustable attenuators via the detection units and the controller, so that the constant control amount of the adjustable attenuators can be realized, and accordingly, the attenuation of the co-site disturbance suppression system to the effective signals is avoided, and the notch bandwidth is reduced. The system can guarantee the situation that the received weak effective signals are not attenuated when offsetting the received interference signals, thereby guaranteeing the normal work of a receiver. The system has the bandwidth reduction effect, so that the system also can be used to reduce the transmitting-receiving frequency difference and improve the utilization rate of the spectrum resources.

Description

technical field [0001] The invention relates to the technical field of electromagnetic compatibility of communication systems, and is especially suitable for a centralized communication station co-site interference suppression system, in particular to an adaptive co-site interference suppression system and method capable of reducing notch bandwidth. Background technique [0002] Centralized communication stations are often installed with a large number of communication equipment. Due to limited space and close distance to each other, the isolation between communication transceiver systems is limited and it is difficult to meet electromagnetic compatibility requirements. Especially when the high-power transmitting system is working, the radiated electromagnetic waves are easily coupled by the adjacent receiving antennas, resulting in desensitization of the receivers working at the same time, or even front-end blockage, making it impossible to receive useful signals normally. ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that there is a certain notch bandwidth in the current self-adaptive co-location interference suppression system, so that when the interference signal is canceled, the useful signal is also used for cancellation, which may lead to the problem that the receiving system is difficult to receive the useful signal normally , propose an adaptive co-location interference suppression system that can reduce the notch bandwidth

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