Format of data in datafile produced by file_sink_c

GNU Radio
1

Dear all,

I’m wodering the format of data in datafile which produced by
file_sink_c. I used octave function read_complex_binary to read the
data. Since the usbdata is a 16-bit binary data sent from FPGA to usb
controller, is the first 16 lines of the data represent the first sample
point of the received signal? If not, does one line of the data
represent one sample poit of the received signal?

Thanks for help.

Regards,
Yan

2

file_sink_c prodces complex floating point. Every 8 bytes is a complex
float, where the first 4 bytes is a float representing I, and the second
4 bytes a float representing Q.

if you were using numpy, it could be read with: numpy.fromfile(file,
numpy.complex64)

-Josh