Facilitation of passive intermodulation cancelation via machine learning
AssigneeAT&T Intellectual Property I, L.P.
InventorsErnest Tsui, Paul Maxwell, Weihua Ye
Life of this patent
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Abstract
A passive intermodulation detection system is provided to remotely identify passive intermodulation at a base station site and diagnose the type of intermodulation and location of the non-linearity that is the source of the passive intermodulation. A passive intermodulation cancelation system can generate an equivalent signal to a received interference signal and use the equivalent signal to generate an error signal. The error signal can then be used to reinforce a learning system and converge on a steady state of the interference signal to cancel other interference signals.
Claims20
A method, comprising:
- identifying, by a network device, comprising a processor, of a wireless network, a transmission port associated with a signal interference of a reception port;
- determining, by the network device, an interference product associated with the signal interference;
- based on the determining, ranking, by the network device, the interference product according to a magnitude of the signal interference, resulting in a first ranked interference signal;
- based on a condition associated with the first ranked interference signal being determined to have been satisfied, generating, by the network device, a second ranked interference signal that conforms to the first ranked interference signal;
- in response to the ranking, generating, by the network device, a channel associated with the transmission port and the reception port to modify a transmission signal associated with the transmission port;
- based on the transmission signal, estimating, by the network device, an interference signal at the reception port, resulting in an estimated signal;
- and
- subtracting, by the network device, the estimated signal from the second ranked interference signal, resulting in an error signal.
A system, comprising:
- a processor;
- and
- a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
- determining a signal interference associated with a signal received by a receiver device;
- determining an interference product as a function of the signal interference;
- based on the interference product, generating rank data representative of a rank of the signal interference, and applying the rank data to the signal interference to generate a ranked interference signal;
- in response to the applying, generating a channel associated with a transmission device and the receiver device to modify a transmission signal associated with the transmission device;
- based on the transmission signal, estimating an interference signal at the receiver device, resulting in an estimated signal;
- and
- subtracting the estimated signal from the ranked interference signal, resulting in an error signal.
A machine-readable storage medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:
- receiving first signal data related to a transmission signal from a transmission port device to a reception port device, wherein a first signal interference associated with the transmission signal is determined to be present at the reception port device;
- based on determining an interference product associated with the first signal interference, ranking the interference product, resulting in rank data;
- based on the rank data, generating a ranked interference signal;
- generating a second signal interference and a channel associated with the transmission port device and the reception port device to modify the transmission signal associated with the transmission port device;
- based on the transmission signal, estimating an interference signal at the reception port device, resulting in an estimated signal;
- and
- subtracting the estimated signal from the ranked interference signal, resulting in an error signal.
Dependencies are inferred from the claim text.