Re: How to convert complex float file to complex int 16 in Gnuradio For USRP input...

[David Cherkus]

https://wiki.gnuradio.org/index.php/Complex_To_IShort  describes what is going on in your flowgraph.

You are not producing complex int16, you are producing a stream of int16 whose values happen to be alternating int16 real and imaginary parts of the input complex floating point numbers.

Most drivers tend to "normalize" their output so it is in the range -1.0..+1.0, and that is probably what you are feeding into the Complex to IShort block.

Therefore if you go directly to int16 without scaling (for instance, multiplying by 32*1024) you will probably get 0 as the output, since converting most numbers in range -1.0..+1.0 to int16 results in 0.

On Tuesday, July 5, 2022, 2:28:07 AM EDT, sp <stackprogramer@gmail.com> wrote:

Thanks but when I used complex blocks I see that it converts all complex files to 0 hex byte...So my converted signal is not an acceptable signal for sending with USRP....I used even float to int and so block but my data is not acceptable when I send signal with USRP 

original complex file and converted file can not the same signal on the spectrum...

On Thu, Jun 30, 2022 at 7:05 PM sp h <stackprogramer@gmail.com> wrote:

In Gnuradio there are different types that you can see in the below screenshot?

How to convert complex float file to complex int 16 in Gnuradio For USRP input I need to convert complex float to complex int...

, My question is how can I do this action? Thanks in advance