# Ofdm\_txrx.py **URL:** \ **Category:** GNU Radio\ **Created:** [April 24, 2014, 4:43am UTC](https://www.ruby-forum.com/t/ofdm-txrx-py/240644 "2014-04-24T04:43:23Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Post date:** [April 24, 2014, 4:43am UTC](https://www.ruby-forum.com/t/ofdm-txrx-py/240644/1 "2014-04-24T04:43:23Z")
I run the file “ofdm\_txrx.py” from terminal using command ./ofdm\_txrx.py But I got errors !!! why ? Thanks in advance ! Here is the output on terminal: ./ofdm\_txrx\_me.py: line 26: OFDM Transmitter / Receiver hier blocks. For simple configurations, no need to connect all the relevant OFDM blocks to form an OFDM Tx/Rx–simply use these. : No such file or directory ./ofdm\_txrx\_me.py: line 31: import: command not found from: can’t read /var/mail/gnuradio ./ofdm\_txrx\_me.py: line 33: import: command not found from: can’t read /var/mail/utils ./ofdm\_txrx\_me.py: line 36: try:: command not found from: can’t read /var/mail/gnuradio from: can’t read /var/mail/gnuradio from: can’t read /var/mail/gnuradio ./ofdm\_txrx\_me.py: line 41: except: command not found ./ofdm\_txrx\_me.py: line 43: import: command not found ./ofdm\_txrx\_me.py: line 44: import: command not found ./ofdm\_txrx\_me.py: line 45: import: command not found ./ofdm\_txrx\_me.py: line 47: \_def\_fft\_len: command not found ./ofdm\_txrx\_me.py: line 48: \_def\_cp\_len: command not found ./ofdm\_txrx\_me.py: line 49: \_def\_frame\_length\_tag\_key: command not found ./ofdm\_txrx\_me.py: line 50: \_def\_packet\_length\_tag\_key: command not found ./ofdm\_txrx\_me.py: line 51: \_def\_packet\_num\_tag\_key: command not found ./ofdm\_txrx\_me.py: line 53: syntax error near unexpected token `(' ./ofdm_txrx_me.py: line 53:`\_def\_occupied\_carriers = (range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) + range(8, 21) + range(22, 27),)’ ---
**Author:** ![Sara\_ChSSrif](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@Sara\_ChSSrif](https://www.ruby-forum.com/u/Sara_ChSSrif)\ **Post date:** [April 25, 2014, 3:36am UTC](https://www.ruby-forum.com/t/ofdm-txrx-py/240644/2 "2014-04-25T03:36:05Z")
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Sara, this is a python module, not an executable file. It seems like you tried to run it, and since it does not specify otherwise, your shell tried to treat it as a shell script. Won’t work. That file contains hierarchical blocks, which you can use in a flow graph, not on their own. I still get the feeling that you’re jumping around in GNU Radio code without really knowing what you’re looking at. I suggest doing the introductory guides from the wiki; please go to [http://gnuradio.org](http://gnuradio.org) and read the “How do I use GNU Radio?” page and at least the first two “beginner level tutorials” from [http://gnuradio.org/redmine/projects/gnuradio/wiki/Tutorials](http://gnuradio.org/redmine/projects/gnuradio/wiki/Tutorials) page. Greetings, Marcus On 24.04.2014 04:42, Sara C. wrote: > blocks to form an OFDM Tx/Rx–simply use these. : No such file or > ./ofdm\_txrx\_me.py: line 48: \_def\_cp\_len: command not found > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Discuss-gnuradio > mailing list [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - [http://www.enigmail.net/](http://www.enigmail.net/) iQEcBAEBAgAGBQJTWMVbAAoJEBQ6EdjyzlHtg9sH/2GcP0iQFNEWm/z/g5hw+Dzh G2lSNoGFvxpn2EMfiSd8p3BxUnxc0mRLQFDel6f8wJjUGVUkB7WGvYKs7Kf5SDl5 Sq5IU0ceRVOFG/23rpeVtCaXwbAOM5xswfCPykase6Wi1Zr19uzPf62r3ssqzXPT rFnfBmPVWfpADE7Pbvajy+pyufKqEy0GBqjvWH0aUBVfiKGzZCwF8UQ5229vtiuE 43uPZi+TduBf92VyyoGTNQvhsli4kiB2+uE906jcIojjIPX6xQjQuTNeDnpLRrI7 hzlhiNjsFUd4Cr/S6Uamgvb38pDALhQWdP6GwQbGXTa9P26CdxgkxBgbmZ41/Fk= =T8Ud -----END PGP SIGNATURE----- ---
**Author:** ![Sara\_ChSSrif](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@Sara\_ChSSrif](https://www.ruby-forum.com/u/Sara_ChSSrif)\ **Post date:** [April 25, 2014, 5:31am UTC](https://www.ruby-forum.com/t/ofdm-txrx-py/240644/3 "2014-04-25T05:31:46Z")
On Wed, Apr 23, 2014 at 10:42 PM, Sara C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)wrote: > to form an OFDM Tx/Rx–simply use these. > ./ofdm\_txrx\_me.py: line 43: import: command not found > 27),)’ It looks like it’s not being recognized by your shell as a Python program. Try running as: $ python ofdm\_txrx.py Tom ---
**Author:** ![Sara\_ChSSrif](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@Sara\_ChSSrif](https://www.ruby-forum.com/u/Sara_ChSSrif)\ **Post date:** [April 25, 2014, 6:39am UTC](https://www.ruby-forum.com/t/ofdm-txrx-py/240644/4 "2014-04-25T06:39:38Z")
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Sara, this is a python module, not an executable file. It seems like you tried to run it, and since it does not specify otherwise, your shell tried to treat it as a shell script. Won’t work. That file contains hierarchical blocks, which you can use in a flow graph, not on their own. I still get the feeling that you’re jumping around in GNU Radio code without really knowing what you’re looking at. I suggest doing the introductory guides from the wiki; please go to [http://gnuradio.org](http://gnuradio.org) and read the “How do I use GNU Radio?” page and at least the first two “beginner level tutorials” from [http://gnuradio.org/redmine/projects/gnuradio/wiki/Tutorials](http://gnuradio.org/redmine/projects/gnuradio/wiki/Tutorials) page. Greetings, Marcus On 24.04.2014 04:42, Sara C. wrote: > OFDM blocks to form an OFDM Tx/Rx–simply use these. : No such file > ./ofdm\_txrx\_me.py: line 48: \_def\_cp\_len: command not found > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Discuss-gnuradio > mailing list [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - [http://www.enigmail.net/](http://www.enigmail.net/) iQEcBAEBAgAGBQJTWNP5AAoJEBQ6EdjyzlHtZ1IH/1MU8yjObQt0vSxeRA0PAtW/ 9z15fYN1LRFk8bc0ikjzl1brMg30N9XOrQJkZkCLhdUG65DFAxCI0eM//DSEAJCo /6aN7K7msXEzG9UwLC5eV3vNpQatS2LWIVzX4boXJeL9WWReGCwMZO4D7Sr2oQrr LyySHE/RF3j8qiz04Yy5vl4AvXCam94jfCj4CZ/eahqOGjaF3RRk83xtfJ5kD+tU NIBWf/gZ0mG5GJDKEsqbbEh3ngd7/D510QYQy3D4f7JrHzKnfhblIDUiBlRQvzgF SyXYhiy3IaM9uH4lHbRLcFyv+P5Ny7lFOgrxSaxDqb4JYdXUM77UPE8kXsoSDB8= =DCm+ -----END PGP SIGNATURE-----