Can I add frequency offset at sender in ofdm example

GNU Radio
1

Hi, guys
Thanks in advance.
I plan to do a experiment in usrp that intentionally adding some
frequency offset in data symbol before transmission. Is that feasible
to implement it in gnuradio? Which block should I modify at sender
side?

Sent from my iPhone

2

On Sat, Jul 20, 2013 at 10:43 AM, Yingjie C. [email protected] wrote:

Hi, guys
Thanks in advance.
I plan to do a experiment in usrp that intentionally adding some
frequency offset in data symbol before transmission. Is that feasible
to implement it in gnuradio? Which block should I modify at sender
side?

Quite easily and in a few different ways. You can use the “Channel
Model” block and just set the frequency offset and nothing else. You
can use a frequency xlating filter, or you can do a complex multiply
of your signal against a complex sinusoid.

Just remember that you need to have a high enough sampling rate to
accommodate the bandwidth of your new signal.

Tom