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Accurate frequency estimation using an all-pole filter with mostly zero coefficients

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1 Author(s)
R. Kumaresan ; University of Rhode Island, Kingston, RI

An all-pole Lth order filter with only M (M < L) nonzero coefficients is used to estimate accurately the frequencies of M closely spaced sinusoidal signals in noise. The method eliminates redundancy in the linear prediction equations which caused the spurious spectral peaks observed in previously known methods [3], [4]. Since most filter coefficients are zero, the computational effort required is small.

Published in:

Proceedings of the IEEE  (Volume:70 ,  Issue: 8 )