Blind Deconvolution of the Aortic Pressure Waveform Using the Malliavin Calculus

Table 2

The performance measure (SNRE) after added white Gaussian noise.

		FIR-2	FIR-4	Malliavin calculus
Noise variance	SNR	SNRE	SNRE	SNRE
1	38.199 db	13.8976 db	18.599 db	24.927 db
10	28.217 db	13.479 db	18.356 db	23.443 db
70	19.833 db	12.748 db	16.548 db	18.808 db
100	18.312 db	12.441 db	15.767 db	17.664 db
300	13.705 db	10.851 db	13.044 db	13.768 db
500	11.633 db	9.7677 db	11.466 db	11.803 db
700	10.309 db	8.9428 db	10.374 db	10.523 db

The multichannel blind deconvolution (MBD) technique was applied by using the conventional method (FIR-2 model with two orders and FIR-4 model with 4 orders) and the proposed method (Malliavin calculus). We compared between these methods by using the performance measure SNRE (3.1) with the signal-to-noise ratio SNR at variant noise.