Receiver of signals, in particular of gnss signals, comprising an interference rejection filter, and associated method
AssigneeThales
InventorsNicolas MARTIN, Jean-Michel PERRE, Nicolas BASTIEN
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Abstract
A receiver of signals likely to be disturbed by an interfering signal, the receiver includes an interference rejection filter comprising a multiplying gain applied respectively to an in-phase channel and an in-quadrature channel of a signal received by the receiver, the value of the multiplying gain being determined by a nonlinear function Ki(ρ) of the modulus ρ of the received signal, the function Ki(ρ) being determined so as to maximize the signal-to-noise ratio after application of the multiplying gain and demodulation of the received signal.
Claims19
A receiver of signals likely to be disturbed by an interfering signal, the receiver comprising an interference rejection filter comprising a multiplying gain applied respectively to an in-phase channel and to an in-quadrature channel of a signal received and digitized by the receiver, the value of the multiplying gain being determined by a nonlinear function Ki(ρ) of the modulus ρ of the received signal, the function Ki(ρ) being determined so as to maximize the signal-to-noise ratio after application of the multiplying gain and demodulation of the received signal.
A method for receiving signals likely to be disturbed by an interfering signal, comprising the steps of:
- receiving respectively an in-phase channel and an in-quadrature channel of a signal,
- computing a multiplying gain from a nonlinear function Ki(ρ) of the modulus ρ of the received signal, the nonlinear function Ki(ρ) being determined so as to maximize the signal-to-noise ratio after application of the multiplying gain and demodulation of the received signal.
- applying the multiplying gain respectively to the in-phase channel and to the in-quadrature channel of the digitized signal.
Dependencies are inferred from the claim text.