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Hi fellas,
i have a query, i am using netgear WG311 v3 card in my PC, radio conditions are pretty bad and the data rate is 2 MBps as says the software which came along the driver (Iam using it in windows),
My goal has been to decode the preamble or find it where it ends and SFD begins,

Now when i analyze the receive pin in oscilloscope, i see those preamble bits but the signal over all has the shape of amplitude modulated signal or like beats in (acoustics)
and i can not determine what they are, and why they are here, at 2MBps i only have DQPSk followed by barker and raised cosine filter, so this signal doesnot make sense, ne ideas?

Now i dont know whether this question fits this section of the forum or the forum itself, but ne help will be highly appreciated