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josh
276e7454e4
after days of ad9361 noise analysis with multiple borad, it turns out that the ad9361 RxFir can significantly reduce max noise level, with which the interference-to-noise ratio can be greatlt improved, and the nulling algotirhm can finally work properly; another experiment is about duifei multi rx channel phase-amplitude consistence, for which the rx external lo of ad9361 is enabled, but extra phase compensation is needed because the trace length of external lo is not matched