Patent ID: 8891699

Claim:
An apparatus comprising: an input configured to receive a signal from a communication channel, wherein the signal including a plurality of repeated signal components having cyclic properties therein; an analog to digital converter (ADC) configured to sample the signal to generate a plurality of samples; and a processor configured to: fast Fourier transform (FFT) process the plurality of samples to generate a plurality of FFT outputs; process the plurality of FFT outputs to generate a plurality of polar coordinate FFT outputs, wherein each of the plurality of polar coordinate FFT outputs corresponding to a respective one amplitude and one phase, of a plurality of amplitudes and phases, of a respective one of a plurality of frequency bins; and process the plurality of amplitudes and phases of the plurality of frequency bins to determine a group delay of the communication channel as a function of frequency; generate a plurality of group delays of the communication channel respectively as a function of a plurality of frequency bands, including the group delay of the communication channel as a function of frequency, such that each of the plurality of group delays corresponding to a respective one of the plurality of frequency bands; and splice the plurality of group delays of the communication channel to generate a wideband group delay of the communication channel as a function of frequency.