PIM compensation at a transmitter's radio frequency port
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsXiaoming Lai, Renyuan Li
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Abstract
A wireless communication device is provided. The wireless communication device comprises a transceiver; an antenna connected to the transceiver through a transmission path; and a compensation circuit configured to or operative to compensate for a passive intermodulation (PIM) interference on the transmission path, the compensation circuit generating a PIM estimate signal based on a transmit signal and a PIM error signal.
Claims19
A wireless communication device comprising:
- a transceiver;
- an antenna connected to the transceiver through a transmission path;
- and
- a compensation circuit operative to compensate for a passive intermodulation (PIM) interference on the transmission path, the compensation circuit generating a PIM estimate signal based on a transmit signal and a PIM error signal, wherein the compensation circuit comprises a PIM estimator configured to generate the PIM estimate signal, the PIM estimator having as inputs the transmit signal and the PIM error signal.
A method for compensating Passive InterModulation (PIM) in a wireless communication device, which includes a transceiver and an antenna connected to the transceiver through a transmission path, the method comprising:
- generating a PIM estimate signal based on a transmit signal and a PIM error signal;
- and
- compensating a PIM interference on the transmission path using the PIM estimate signal,
- wherein generating the PIM estimate signal comprises using a simplified Volterra model, the model including a first adaptive filter connected to a non-linear block connected to a second adaptive filter.
Dependencies are inferred from the claim text.