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, 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 characteristic and the estimated channel characteristic as the multipath signal strength.
In a communications receiver, including a multipath equalizer having an adaptive digital filter including a source of tap coefficients, a multipath signal strength indicator, comprising:
- a source of nominal coefficient values, respectively corresponding to 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 nominal coefficients and the corresponding tap coefficients as the multipath signal strength.
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 nominal coefficient values, respectively corresponding to the 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 nominal coefficients and the tap coefficients;
- and
- providing the combined magnitude of the difference as the multipath signal strength.
Dependencies are inferred from the claim text.