The paper proves that STFT phase retrieval holds if roughly 8/9 of the ambiguity function entries are nonzero (3/4 in prime dimensions) via uncertainty principles and a two-window approach.
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Uncertainty Principles as a Tool for STFT Phase Retrieval
The paper proves that STFT phase retrieval holds if roughly 8/9 of the ambiguity function entries are nonzero (3/4 in prime dimensions) via uncertainty principles and a two-window approach.