Upstream frequency response measurement and characterization

摘要

Upstream frequency response measurement and characterization. Signaling is provided between respective communication devices within a communication system. Based upon at least one of these signals, one of the communication devices captures a number of sample sets corresponding thereto at different respective frequencies (e.g., a different respective center frequencies, frequency bands, etc.). Then, spectral analysis is performed with respect to each of the sample sets to generate a respective and corresponding channel response estimate there from. After this number of channel response estimates is determined, they are combined or splice together to generate a full channel response estimate. In implementations including an equalizer, different respective sample sets may correspond to those that have undergone equalization processing and those that have not.

主权项

1. A communication device comprising:
a communication interface; and a processor, the processor and the communication interface configured to:
support communications with another communication device via a communication channel including to perform equalization of the communications using a plurality of equalizer taps;determine a plurality of subsets of equalizer taps of the plurality of equalizer taps that correspond to a plurality of sub-channels distributed across the communication channel, wherein a first subset of the plurality of subsets of equalizer taps corresponds to a first sub-channel of the plurality of sub-channels, and a second subset of the plurality of subsets of equalizer taps corresponds to a second sub-channel of the plurality of sub-channels;determine a plurality of channel response estimates that correspond to the plurality of sub-channels based on the plurality of subsets of equalizer taps, wherein a first channel response estimate of the plurality of channel response estimates corresponds to the first sub-channel of the plurality of sub-channels, and a second channel response estimate of the plurality of channel response estimates corresponds to the second sub-channel of the plurality of sub-channels; andsplice the plurality of channel response estimates together to generate a full channel response estimate of the communication channel.