Method for canceling interfering wireless signals in cable customer premises equipment devices

A customer premises equipment (“CPE”) device for use with a cable signal provided by a cable system, and an interfering radio frequency (“RF”) signal generated by one or more external wireless signal sources, the CPE device comprising:

• an antenna configured to receive the interfering RF signal as a copy signal;
• at least one signal adjustment component configured to adjust at least one signal parameter of the copy signal to produce a processed copy signal;
• a signal processing chain configured to receive and combine the cable signal, the interfering RF signal, and the processed copy signal to produce a combined signal;
• at least one processor;
• and
• a memory connected to the at least one processor, the memory storing instructions executable by the at least one processor that when executed thereby implement a method comprising:
• determining error rate values for the combined signal;
• determining when the error rate values are increasing;
• determining when the copy signal comprises more than a threshold amount of signal energy;
• and
• when it is determined that the error rate values are increasing, and the copy signal comprises more than a threshold amount of signal energy, instructing the at least one signal adjustment component to adjust the at least one signal parameter of the copy signal such that the error rate values for the combined signal decrease.

A system for use with an interfering radio frequency (“RF”) signal generated by one or more external wireless signal sources, the system comprising a cable system and a plurality of customer premises equipment (“CPE”) devices connected to the cable system, the cable system being configured to transmit a cable signal to each of the CPE devices, each of the CPE devices comprising an antenna configured to receive the interfering RF signal as a copy signal;

• and a signal processing system configured to:
• receive the copy signal from the antenna,
• receive the interfering RF signal, and the cable signal,
• modify at least one signal parameter of the copy signal to produce a processed copy signal,
• combine the cable signal, the interfering RF signal, and the processed copy signal to produce a combined signal,
• modify the combined signal to produce a processed signal,
• monitor error rate values of the combined signal, and
• adjust the at least one signal parameter of the copy signal to reduce the error rate values of the combined signal.

A method for use with a cable signal provided by a cable system, and an interfering radio frequency (“RF”) signal generated by one or more external wireless signal sources, the method being performed by a customer premises equipment (“CPE”) device comprising a memory, a processor, signal processing components, and an antenna, the method comprising:

• receiving, at the antenna of the CPE device, the interfering RF signal as a copy signal;
• processing, by at least a first portion of the signal processing components, the copy signal to produce a processed copy signal;
• receiving, by at least a second portion of the signal processing components, the cable signal and the interfering RF signal;
• combining, by at least a third portion of the signal processing components, the cable signal, the interfering RF signal, and the processed copy signal to produce a combined signal;
• determining, by the processor, error rate values for the combined signal;
• determining, by the processor, whether the error rate values are increasing;
• determining, by the processor, whether the copy signal comprises more than a threshold amount of signal energy;
• when the processor determines that the error rate values are increasing and the copy signal comprises more than the threshold amount of signal energy, instructing, by the processor, the first portion of the signal processing components to modify the processing of the copy signal to change a value of at least one signal parameter of the copy signal to reduce the error rate values of the combined signal;
• and
• modifying, by the processor, the combined signal to produce a processed signal.