Systems and methods for determining cable modulation using performance data
Abstract:
In various embodiment, the disclosed systems, methods, and apparatuses describe the application of a pre-distortion at a transmitting device, such as a headend or a remote PHY device, to modify signals to be transmitted on a cable network in order to account for the distortions to the signals received by one or more devices on the network. In an embodiment, the pre-distortions can be implemented in the analog domain or in the digital domain, for example, using analog filters, or digital signal processing (DSP) devices. In an embodiment, the pre-distortion can be applied on particular subcarriers associated with the signals, without being applied to other subcarrier associated with the signals.
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