Patent ID: 7840384

Claim:
A method comprising: transforming a frequency-band measured signal (x(t), x(μ·Δt)), into a subspace containing white noise components and a subspace containing interference-signal components; and determining sinusoidal interference signals (A k ·e j(ω k t+φ k ) , A k ·e j(μ·ω k Δt+φ k ) ) via an estimation method using the subspace containing the white noise components, wherein an entire frequency range of the frequency-band measured signal, which is composed of a limited number (p(ν)) of the sinusoidal interference signals (A k ·e j(ω k t+φ k ) , A k ·e j(μ·ω k Δt+φ k ) ) and a noise signal (w(t), w(μ·Δt)), which includes at least the white noise components, is split into several frequency bands (ν) via a filter bank.