Blind separation device based on BPSK/QPSK/8QAM (binary phase shift keying/quaternary phase shift keying/8-quadrature amplitude modulation) modulation signal

Abstract

The invention discloses a blind separation device based on BPSK / QPSK / 8QAM (binary phase shift keying / quaternary phase shift keying / 8-quadrature amplitude modulation) modulation signals, wherein a radio frequency front-end processing unit 1 of the blind separation device is connected with a digital signal processor 3 via an input buffer 2; the digital signal processor 3 is connected with a field programmable gate array FPGA unit 5 and a signal output unit 6 via an output buffer 4 respectively; the field programmable gate array FPGA unit 5 is connected with a video output unit 7; the video output unit 7 is connected with an LCD liquid crystal display 8; and a timing and control unit 12 is connected with the radio frequency front-end processing unit 1, the input buffer 2, a first off-chip data memory 9a, a second off-chip data memory 9b, a FLASH memory 10, the output buffer 4, the field programmable gate array FPGA unit 5, the video output unit 7 and the digital signal processor 3 respectively. The device can eliminate interference signals, improve communication quality, and separate two paths of hybrid communication signals.

Description

technical field [0001] The invention relates to a blind separation device based on BPSK / QPSK / 8QAM modulated signals, and belongs to the technical field of signal blind separation. [0002] Background technique [0003] Blind separation is at the source In case of unknown, the mixed signal received by the for the separation of independent source signals. In reality, communication signals not only contain interference signals, but also are mixed with multiple signals of the same or different modulation modes, which increases the difficulty of signal processing by the receiving device. Currently, blind separation devices in the field of blind signal separation are only aimed at processing two channels of audio mixed signals, but do not support the processing of two channels of communication signals and interference signals. [0004] For example, the Chinese invention patent application discloses "a continuous processing type mixed audio blind separation device" (patent p...

AI Technical Summary

Problems solved by technology

However, under the condition that the two communication signals are mixed with the interfering signal, the device cannot separate the independent source signals of the mixed communication signal. In other words, the device cannot separate the independent communication signal while removing the interfering signal.

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