Patent ID: 6476754
Filing Date: 2002-11-05
Classification: H03M

Abstract:
A method for reconstruction of a nonuniformly sampled bandlimited analog signal xa(t), said nonuniformly sampled signal comprising N subsequences xk(m), k=0, 1, . . . , Nâˆ’1, N&gE;2, obtained through sampling at a sampling rate of 1/(MT) according to xk(m)=xa(nMT+tk), where M is a positive integer, and tk=kMT/N+&Dgr;tk, &Dgr;tk being different from zero, said method comprisingforming a new sequence y(n) from said N subsequences xk(m) such that y(n) at least contains the same information as x(n)=xa(nT), i.e. xa(t) sampled with a sampling rate of 1/T, in a frequency region lower than &ohgr;0, &ohgr;0 being a predetermined limit frequency, by means of: (i) upsampling each of said N subsequences xk(m), k=0, 1, . . . , Nâˆ’1, by a factor M; (ii) filtering each of said upsampled N subsequences xk(m), k=0, 1, . . . , Nâˆ’1, by a respective digital filter; and (iii) adding said N digitally filtered subsequences to form y(n).