An expanded MFBLP method with reduced computational complexity for estimating sinusoid frequencies
The modified forward backward linear prediction method (MFBLP) method for estimating the frequencies of multiple sinusoids performs well on short data records, but a large predictor order L is required to achieve the minimal estimation variance. A new expanded MFBLP method is presented, which attains the same (or slightly better) performance for a substantially smaller L, and a hence smaller computational complexity. For example, in the case of 2 closely spaced sinusoids and 64 samples, L/sub opt/ decreases from 48 to 9, and computational complexity is reduced to less than 25%.