Signal synthesizing method and device for multiple signal flows

Abstract

The invention discloses signal synthesizing method and device. The signal synthesizing method includes steps of receiving N channels of first signals through N antennas; respectively outputting N channels of second signals and N channels of third signals according to cache addresses where the N channels of first signals are written in; subjecting every two channels of signals in the N channels of first signals and the N channels of second signals to conjugation multiplying so as to acquire M first conjugation products and M second conjugation products; adding each datum in the M first conjugation products with corresponding values of current M aggregate values, subtracting corresponding values in M second conjugation products from M aggregate values so as to update current M aggregate values by subtracted M values, updating current N channels of output factors by updated M aggregate values, multiplying the N channels of output factors updated with corresponding numerical values in the N channels of third signals, and adding N products after multiplying so as to utilize added data as synthesis signals.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a signal synthesis method and device for multiple signal streams. Background technique [0002] As wireless communication becomes more and more widely used, wireless signals become denser and the electromagnetic environment becomes more and more complex, resulting in weaker and weaker received signals in certain application environments (such as non-cooperative communication). Among them, with the gradual deepening of human exploration of deep space, the distance between deep space spacecraft and the earth is getting farther and farther, and the signal reaching the ground becomes weaker and weaker, and it is still difficult to achieve effective signal reception with large-diameter antennas. Therefore, it is necessary to find a method that can improve the Signal-to-Noise Ratio (SNR) of the received signal to solve this problem, and multi-antenna signal synthesis ...

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Problems solved by technology

[0010] However, in the SUMPLE algorithm, since the phases of each signal are close to the "pseudo-reference signal", and the phase of the "pseudo-reference signal" changes with time at low SNR, there is a phase drift problem at low SNR, and Since the signal references are different, the phase of each segment of the signal is aligned to a different reference phase, resulting in discontinuity in the phase between segments, so that the use of this phase for signal synthesis will reduce the quality of the synthesized signal

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