Questions in benchmark_tx

GNU Radio
1

Dear all,

I’d like to transmit some data with random 0s and 1s using
benchmark_tx.py, can someone tell me that how can I generate such kind
of data in benchmark_tx.py for transmission? and what if I want to
specify a file to transmit, how to modify the code ‘source_file =
open(options.from_file, ‘r’)’? I am trying to use ‘qam8’ for
modulation.

My another question is how benchmark_tx.py file decide the bandwidth?
Since there is no input for us to specify the bandwidth, except for
the center frequency. I wonder is the bandwidth decided by the
bit_rate that we input? I’m confused about that. Your answers are
appreciated. Thanks in advance!

–
Best wishes,

Y

2

Look at the while loop in the code. Instead of reading from a file you
can
substitute data
to be whatever you like.

use the following option to find out how to send data read from a file.
./benchmark_tx.py -h

This will display lots of options that you can use and one of them is
the
file option. You need not modify the code to do this.