Revision as of 07:20, 26 March 2021 edit SOPHIASONGPANDA (talk \| contribs) 26 edits m Change name to Keysight Vector Signal Analysis Basics. Tag: Visual edit: Switched ← Previous edit		Revision as of 07:23, 26 March 2021 edit undo SOPHIASONGPANDA (talk \| contribs) 26 edits m Chang publish to published Next edit →
Line 19: ==== Signal spectrum from FFT ==== {{main\|Fast Fourier transform}} A [[fast fourier transform\|FFT]] is used to compute the frequency spectrum of the signal. Usually there is a [[window function\|windowing function]] option to limit [[spectral leakage]] and enhance frequency resolution.<ref>Keysight [https://stgwww.keysight.com/cn/zh/assets/7018-02679/technical-overviews/5990-6405.pdf], ''Keysight Vector Signal Analysis Basics'', ~~Publish~~Published September 30, 2019.</ref> This window is implemented by multiplying it with the digitized values of the sample period before computing the FFT. ==== Constellation diagram ====

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