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I am trying to use the frequency offset calibration for receivers code available in MATLAB to process a set of IQ data I received from a spectrum analyzer. I tried running the code but I am experiencing difficulty with the pilot tone expected.

Asked by Akpabio Ekpewoh on 22 Jul 2019
Latest activity Answered by Kaashyap Pappu on 7 Aug 2019
I am trying to use the frequency offset calibration for receivers code available in MATLAB to process a set of IQ data I received from a spectrum analyzer. I tried running the code but I am experiencing difficulty with the pilot tone frequency expected. My IQ data was from a bluetooth device and I collected it on a broadcast channel 2.402 GHz. What does this code require for a value here? Also can I get the code itself so I can manipulate it as I see fit?

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Answer by Kaashyap Pappu on 7 Aug 2019

Given that MATLAB carries out Baseband Processing, based on the Bluetooth Standard, the Bandwidth could be 1MHz in the case of Bluetooth, or 2MHz in the case of Bluetooth Low Energy. When the example is executed, expected frequency of received tone should be in a similar range.
To accommodate this range on the Spectrum Analyzer, change the properties “StartFrequency” and “StopFrequency to larger values, preferably in the MHz range, to accommodate the pilot tone frequency component in the Analyzer output.

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