US 11,630,139 B2 · System and method for wideband spectral estimation using joint space-time array manifold vectors

Abstract

Embodiments of systems and method for determining a joint space-time spectral estimate (P) for a wideband spectrum are generally described herein. To determine a joint space-time spectral estimate (P) for a wideband spectrum, a random time delay may be applied to received signals for each channel of a plurality of receive channels to generate time-delayed signals for each receive channel. The time-delayed signals may be sampled for each receive channel to generate time-delayed samples and form array manifold vectors based on the random time delays and position of each antenna element in an array of antenna elements. An inverse (Q) of the joint-space time spectral estimate (P) may be determined by projecting the array manifold vectors through a mixing matrix (M). The mixing matrix (M) may be based on the time-delayed samples. The joint space-time spectral estimate (P) may comprise spatial and temporal properties of the wideband spectrum.

Claims20

Dependent claims

A system for joint space-time spectral estimation, the system comprising:

processing circuitry;
delay circuitry comprising a discrete time delay unit (TDU) for each channel of a plurality of receive channels;
and
memory,
wherein to determine a joint space-time spectral estimate (P) for a wideband spectrum, the processing circuitry is configured to:
provide a random time delay (tn) for each channel of a plurality of receive channels to be applied to received signals by the TDUs of the delay circuitry to generate time-delayed signals for each receive channel, the received signals received by an array of antenna elements coupled to the delay circuitry;
sample the time-delayed signals for each receive channel to generate time-delayed samples (Xn);
form array manifold vectors based on the random time delays and position of each antenna element in the array of antenna elements;
determine an inverse (Q) of the joint-space time spectral estimate (P) by projecting the array manifold vectors through a mixing matrix (M), the mixing matrix (M) based on the time-delayed samples (Xn),
wherein the joint space-time spectral estimate (P) comprises spatial and temporal properties of the wideband spectrum;
and
report an output comprising an angle-of-arrival (AOA) based on joint space-time spectral estimate (P).

9 more elements

A method for determining a joint space-time spectral estimate (P) for a wideband spectrum, the method comprising:

receiving signals by an array of antenna elements;
providing, by processing circuitry a random time delay (tn) for each channel of a plurality of receive channels to be applied to received signals by discrete time delay units (TDUs) of delay circuitry to generate time-delayed signals for each receive channel, the delay circuitry coupled to the array;
sampling the time-delayed signals for each receive channel to generate time-delayed samples (Xn);
forming array manifold vectors based on the random time delays and position of each antenna element in the array of antenna elements;
determining an inverse (Q) of the joint-space time spectral estimate (P) by projecting the array manifold vectors through a mixing matrix (M), the mixing matrix (M) based on the time-delayed samples (Xn),
wherein the joint space-time spectral estimate (P) comprises spatial and temporal properties of the wideband spectrum;
and
reporting an output comprising an angle-of-arrival (AOA) based on joint space-time spectral estimate (P).

5 more elements

Dependencies are inferred from the claim text.

System and method for wideband spectral estimation using joint space-time array manifold vectors

Life of this patent

System and method for wideband spectral estimation using joint space-time array manifold vectors

Life of this patent

Abstract

Claims20