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Table 1 Comparison of computation complexity

From: DOA estimation of spectrally overlapped LFM signals based on STFT and Hough transform

AlgorithmComputation complexity
TF-MUSIC [7]O(NM2Ls2log2Ls)
STFT-FBSS-MUSIC [25]O(NKLs2log2Ls)
The reference [24]O(NMLs2log2Ls + Δ1)
The proposed algorithmO(NMLs2log2Ls + Δ2)