Detecting intermodulation in broadband communication affecting receiver sensitivity
AssigneeNokia Solutions and Networks Oy
InventorsMarko Fleischer, Michael Kronwald, Thomas Klink, Jan Hellmann, Eric Koenig
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Abstract
The present invention provides methods, apparatuses and a program relating to detecting passive intermodulation in broadband communication. The present invention includes transmitting, at a base station, a first signal at a first centre frequency and a second signal at a second centre frequency with a predetermined transmit power, capturing, at the base station, received signal at a reception frequency, obtaining, at the base station, a delay between the transmitted signal and a passive intermodulation caused received signal.
Claims15
A method, comprising:
- transmitting, at a base station in a broadband communications system, a first signal at a first center frequency and a second signal at a second center frequency with a predetermined transmit power;
- capturing, at the base station, received signal at a reception frequency;
- capturing, at the base station, a combined transmission signal, where the combined transmission signal corresponds to the first signal and the second signal;
- predicting, at the base station, a passive intermodulation caused received signal based on the combined transmission signal;
- and
- obtaining, at the base station, a delay between a transmitted signal and the passive intermodulation caused received signal, where the transmitted signal comprises the first signal and the second signal.
An apparatus comprising:
- a receiver/transmitter configured to communicate in a broadband communications system with at least another apparatus,
- a non-transitory memory configured to store computer program code, and
- a processor configured to cause the apparatus to perform:
- transmitting a first signal at a first center frequency and a second signal at a second center frequency with a predetermined transmit power;
- capturing received signal at a reception frequency;
- capturing a combined transmission signal, where the combined transmission signal corresponds to the first signal and the second signal;
- predicting a passive intermodulation caused received signal based on the combined transmission signal;
- and
- obtaining a delay between a transmitted signal and the passive intermodulation caused received signal, where the transmitted signal comprises the first signal and the second signal.
A computer program product embodied on a non-transitory computer-readable medium in which a computer program is stored that, when being executed with a computer, is configured to control an apparatus to:
- transmit, in a broadband communications system, a first signal at a first center frequency and a second signal at a second center frequency with a predetermined transmit power;
- capture a received signal at a reception frequency;
- capture a combined transmission signal, where the combined transmission signal corresponds to the first signal and the second signal;
- predict a passive intermodulation caused received signal based on the combined transmission signal;
- and
- obtain a delay between a transmitted signal and the passive intermodulation caused received signal, where the transmitted signal comprises the first signal and the second signal.
Dependencies are inferred from the claim text.