Device for filtering 5G signal interference aiming at Beidou signal

Abstract

The invention relates to a device for filtering 5G signal interference for Beidou signals, which comprises a signal receiving unit, a Beidou interference signal filtering unit and a signal generating unit; the signal receiving unit is used for acquiring Beidou plus 5G composite digital baseband signals; the Beidou interference signal filtering unit is used for extracting a 5G signal, estimating a channel, restoring the 5G signal, removing the 5G interference signal and restoring the Beidou signal; the signal generating unit is used for converting the interference-removed Beidou signal into an analog signal and sending the analog signal to a Beidou receiver. By adopting the device for filtering 5G signal interference aiming at the Beidou signal, digital baseband data is quickly obtained by simplifying a receiving scheme, and real-time processing of the data is realized through ping-pong operation of the DSP, the FPGA and the two-stage DDR3, so that the real-time performance of baseband data processing is realized, and the possibility of data loss is avoided; besides, through the optimized channel estimation algorithm, the 5G interference signal is removed, and meanwhile, the distortion-free reduction of the Beidou signal is ensured.

Description

technical field [0001] The invention relates to the field of Beidou signal analysis and processing, in particular to the field of 5G interference filtering, and specifically refers to a device for implementing 5G signal interference filtering for Beidou signals. Background technique [0002] With the rapid increase of 5G construction and large-scale deployment of base stations, due to the adjacent frequency interference and overlapping coverage problems of the 5G NR (2.6GHz) system on the RDSS service frequency band of the Beidou system, the Beidou receiver, especially the ground receiving station, has a specific The frequency band is severely interfered, and the Beidou signal cannot be received normally. Therefore, it is imminent to develop a device that can filter out 5G interference at the front end of the Beidou receiver. [0003] The invention provides a Beidou signal 5G interference filtering device, which obtains a composite digital signal in which Beidou and 5G signa...

AI Technical Summary

Problems solved by technology

[0002] With the rapid increase of 5G construction and large-scale deployment of base stations, due to the adjacent frequency interference and overlapping coverage problems of the 5G NR (2.6GHz) system on the RDSS service frequency band of the Beidou system, the Beidou receiver, especially the ground receiving station, has a specific The frequency band is severely interfered, and the Beidou signal cannot be received normally. Therefore, it is imminent to develop a device that can filter out 5G interference at the front end of the Beidou receiver.

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