Hi, Maybe I am asking a newbie question. When use tx_streamer::send() function to send signal, the required format is I/Q samples (say otw_format = sc16). I understand should provide I/Q samples buffer in arguments. I am wondering for the I/Q samples, should I provide binary values buffer (e.g. I: 1, -1, 1..., Q: -1, 1, -1...), then the USRP firmware will modulate the binary values to specific Cos/Sin waves? Or I should do the Cos/Sin modulation in my program (e.g. I: 0, -.001, 0.002..., Q: -1, 0.999, -0.998...) before pass the buffer send() function? I searched the documents, but can't find answer, thanks in advance for explanation,
WANG Cui
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