Multipath signal strength indicator
AssigneeThomson Licensing
InventorsAaron Reel Bouillet, Matthew Thomas Mayer
Life of this patent
Estimating the term…
Abstract
A multipath signal strength indicator is included in a communications receiver which is responsive to a communications channel subject to a multipath signal. The multipath signal strength indicator includes circuitry for estimating the characteristics of the communications channel and circuitry for storing nominal characteristics of a communications channel free of the multipath signal. Further circuitry calculates the difference between the nominal characteristic and the estimated channel characteristic as the multipath signal strength.
Claims17
In a communications receiver responsive to a communications channel subject to a multipath signal of varying strength, circuitry for a multipath signal strength indicator comprising:
- circuitry for estimating the characteristics of the communications channel;
- circuitry for storing nominal characteristics of the communications channel free of the multipath, signal;
- and
- circuitry for calculating the difference between the nominal characteristics and the estimated channel characteristics to form a measure and provide an indication of strength of the multipath signal.
In a communications receiver, including a multipath equalizer having an adaptive digital filter including a source of tap coefficients, circuitry for a multipath signal strength indicator comprising:
- a source of reference coefficient values, respectively corresponding to the source of tap coefficients representative of a received signal free of a multipath signal;
- and
- circuitry for calculating the combined magnitudes of the respective differences between the values of the reference coefficients and the corresponding tap coefficients to form a measure and provide an indication of dynamic strength of the multipath signal.
In a communications receiver, including a multipath equalizer having an adaptive digital filter including a source of tap coefficients, a method for generating an indication of the signal strength of a multipath signal comprising the steps of:
- retrieving a set of reference coefficient values, respectively corresponding to the source of tap coefficients representative of a received signal free of a multipath signal;
- calculating the combined magnitudes of the respective differences between the values of the reference coefficients and the tap coefficients;
- and
- providing the combined magnitudes of the differences to form a measure and provide an indication of dynamic strength of the multipath signal.
Dependencies are inferred from the claim text.