Detection of pulsed radar signal
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsDennis Hui, Kumar Balachandran
Life of this patent
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Abstract
According to some embodiments, a method performed by a network node comprises receiving a plurality of radio signal samples; estimating parameters for a first hypothesis function, the first hypothesis function hypothesizing that that the plurality of radio signal samples only contains background noise; estimating parameters for a second hypothesis function, the second hypothesis function hypothesizing that that the plurality of radio signal samples contains background noise plus one or more radio pulses; performing a log-likelihood ratio test for the first hypothesis function and the second hypothesis function; and based on the log-likelihood ratio test, determining whether a radio pulse is present in the plurality of radio signal samples.
Claims20
A method performed by a network node for detecting a radio pulse, the method comprising:
- receiving a plurality of radio signal samples:
- estimating parameters for a first hypothesis function, the first hypothesis function hypothesizing that the plurality of radio signal samples only contains background noise:
- estimating parameters for a second hypothesis function, the second hypothesis function hypothesizing that the plurality of radio signal samples contains background noise plus one or more radio pulses:
- performing a log-likelihood ratio test for the first hypothesis function and the second hypothesis function;
- and
- based on the log-likelihood ratio test, determining whether a radio pulse is present in the plurality of radio signal samples.
A network node comprising processing circuitry operable to:
- receive a plurality of radio signal samples;
- estimate parameters for a first hypothesis function, the first hypothesis function hypothesizing that the plurality of radio signal samples only contains background noise:
- estimate parameters for a second hypothesis function, the second hypothesis function hypothesizing that the plurality of radio signal samples contains background noise plus one or more radio pulses:
- perform a log-likelihood ratio test for the first hypothesis function and the second hypothesis function;
- and
- based on the log-likelihood ratio test, determine whether a radio pulse is present in the plurality of radio signal samples.
Dependencies are inferred from the claim text.