| 主权项 |
1. An apparatus for peak detection, comprising:
a peak identification unit configured to determine an identifier of a peak location; an interpolator configured to interpolate an input signal to provide at least one interpolated signal; a magnitude squared unit configured to provide at least one magnitude squared signal, wherein the magnitude squared unit is configured to provide the at least one magnitude squared signal based on the at least one interpolated signal; a first delay configured to delay the at least one magnitude squared signal to provide at least one delayed magnitude squared signal, wherein the peak identification unit is configured to determine the identifier of the peak location based on the at least one delayed magnitude squared signal; a first multiplexer configured to receive the at least one delayed magnitude squared signal to produce first multiple output signals; a first differential filter configured to provide coefficients for a first polynomial, wherein the first differential filter is configured to provide the coefficients for the first polynomial based on the first multiple output signals from the first multiplexer; a fractional locator configured to determine a fractional location of a peak in a time domain based on the coefficients for the first polynomial and the identifier of the peak location; and a first fractional interpolator to determine a first peak amplitude based on the fractional location of the peak and the coefficients for the first polynomial,wherein the peak identification unit, the first differential filter, the fractional locator, the first fractional interpolator, and any combination thereof, is implemented in at least one integrated circuit. |
