Patent ID: 11953612
Assignee: STICHTING IMEC NEDERLAND
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 10:
11. The method of claim 1,
wherein the determining of the corrected estimate comprises:
calculating a representation of a phase advance of the preliminary estimate between the second antenna combination and the first antenna combination;
calculating a representation of a phase advance of the comparison value between the second antenna combination and the first antenna combination;
calculating a first metric distance between the representation of the phase advance of the comparison value and the representation of the phase advance of the preliminary estimate; and
calculating a second metric distance between the representation of the phase advance of the comparison value and a phase reversal of the representation of the phase advance of the preliminary estimate,
wherein the corrected estimate of the value proportional to the one-way frequency domain channel response is determined based on a comparison of the first metric distance and the second metric distance, the corrected estimate representing either the phase reversal of the preliminary estimate, or the preliminary estimate;

wherein determining of the corrected estimate for a first frequency of the plurality of frequencies comprises:
expressing a phase of the comparison value for the first antenna combination based on aligning a phase of the comparison value for the second antenna combination to a phase of the preliminary estimate for the second antenna combination;
calculating a first metric distance between the comparison value for the first antenna combination and the preliminary estimate for the first antenna combination;
calculating a second metric distance between the comparison value for the first antenna combination and a phase reversal of the preliminary estimate for the first antenna combination; and
determining the corrected estimate based on a comparison of the first metric distance and the second metric distance, the corrected estimate representing either the phase reversal of the preliminary estimate, or the preliminary estimate; and

wherein determining of the corrected estimate for one or more additional frequencies of the plurality of frequencies comprises:
calculating a representation of a phase advance of the preliminary estimate between the second antenna combination and the first antenna combination;
calculating a representation of a phase advance of the comparison value between the second antenna combination and the first antenna combination;
calculating a first metric distance between the representation of the phase advance of the comparison value and the representation of the phase advance of the preliminary estimate; and
calculating a second metric distance between the representation of the phase advance of the comparison value and a phase reversal of the representation of the phase advance of the preliminary estimate,
wherein the corrected estimate of the value proportional to the one-way frequency domain channel response is determined based on a comparison of the first metric distance and the second metric distance, the corrected estimate representing either the phase reversal of the preliminary estimate, or the preliminary estimate; and

wherein each measurement pair of the measurement pairs is representable as a complex number, wherein a modulus of the complex number represents an amplitude corresponding to the signal strength value and an argument of the complex number represents the phase value,
wherein the preliminary estimate and the corrected estimate each are representable by respective complex numbers, wherein the modulus of the complex number represents an amplitude response and the argument of the complex number represents a phase response,
wherein the comparison value is representable as a complex number formed from the measurement pair for the frequency and respective antenna combination, and
wherein the calculating of the representation of the phase advance of a quantity, the quantity being the preliminary estimate or the comparison value, comprises:
calculating a complex number product of the quantity for the first antenna combination and a complex conjugate of the quantity for the second antenna combination.