Table 3 Computational complexity analysis for conventional estimators
Estimators | Total complex multiplications (CM) |
|---|---|
WSF | 12Q3 + 2M3 + F1M (4Q2M + 3QM2 + 2Q2) |
ESPRIT | 12Q3 + 3M3 (Q−1) + 14M3 |
MVDR | 2Q3+ ∑m=1MF1,m(Q2 + Q) |
MUSIC | 13Q3-Q2M + ∑m=1MF1,m(Q2 + Q) |
root-MVDR | 10Q3 + Q2 + Q |
root-MUSIC | 21Q3 +Q2M+Q2+Q |