Joint noncoherent demodulation and carrier frequency offset correction based on non-linear filtering

A wireless device, comprising:

• a receiver configured to receive a signal having in-phase and quadrature components;
• a non-linear filter demodulator configured to translate noncoherently the in-phase and quadrature components into phase and/or frequency domain signals, and to estimate and correct carrier frequency offset;
• a signal parameter acquisitioner configured to estimate and correct the carrier frequency offset, carrier phase offset, and carrier timing offset based on the in-phase and quadrature components and the phase and/or frequency domain signals, wherein the estimation and correction of the carrier frequency offset performed by the signal parameter acquisitioner is more precise than that performed by the non-linear filter demodulator;
• and
• a detector configured to detect information in the phase and frequency domain signal.

A wireless device, comprising:

• a receiver configured to receive a signal having in-phase and quadrature components;
• a non-linear filter demodulator configured to translate noncoherently the in-phase and quadrature components into phase and/or frequency domain signals, and to estimate and correct carrier frequency offset, wherein the nonlinear filter demodulator is based on a model comprising a constant carrier phase offset and a plurality of sets of variables comprising a set of auxiliary variables, a set of instantaneous frequency variables, and a set of instantaneous phase variables;
• a signal parameter acquisitioner configured to estimate and correct at least one signal parameter based on the in-phase and quadrature components and the phase and/or frequency domain signals;
• and
• a detector configured to detect information in the phase or frequency domain signal.

A method of wireless communication, comprising:

• receiving, by a receiver, a signal having in-phase and quadrature components;
• translating noncoherently, by a non-linear filter demodulator, the in-phase and/or quadrature components into phase and frequency domain signals;
• estimating and correcting, by the non-linear filter demodulator, carrier phase offset;
• estimating and correcting, by a signal parameter acquisitioner, at least one signal parameter based on the in-phase and quadrature components and the phase and/or frequency domain signals;
• estimating, by an estimator, a modulation index of the received signal;
• and
• equalizing, by an equalizer, the estimated modulation index to a predefined modulation index;
• and
• detecting, by a detector, information in the phase and/or frequency domain signal.

A wireless device, comprising:

• a receiving means for receiving a signal having in-phase and quadrature components;
• a non-linear filtering demodulating means for translating noncoherently the in-phase and quadrature components into phase and/or frequency domain signals, and for estimating and correcting carrier frequency offset;
• a signal parameter acquisition means for estimating and correcting at least one signal parameter based on the in-phase and quadrature components and the phase and/or frequency domain signals;
• an estimating means for estimating a modulation index of the received signal;
• and
• an equalizing means for equalizing the estimated modulation index into a predefined modulation index;
• and
• a detection means for detecting information in the phase and/or frequency domain signal.