Data extract from file sink block

GNU Radio
1

Hi all,

How to use file sink block in GRC. I want to extract output data from
rx_ofdm & tx_ofdm examples bolck in GNU radio to plot BER V/s EB/N0 in
MATLAB. If I use file sink blocks, it’s generate a banary file which is
not
opening anywhere. So please tell me what type of file we can get using
file
sink block which is compatible to MATLAB also.

2

Hi Naveen,
the data “format” is described in the official FAQ:

http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#What-is-the-file-format-of-a-gr_file_sink-How-can-I-read-files-produced-by-a-file-sink

It’s raw data, which can be easily read using Matlabs file io
facilities; for reference look into matlab’s “fread” documentation.

Greetings,
Marcus