How to compile cdma module with existing gnuradio ?

[patel999jay]

Hi,

I had successfully installed gr-cdma module. Just had one question about instruction in the installation which says

-- For each of the blocks listed below, open them into gnuradio-companion and compile each one (using the button in GRC that looks like a sphere and a pyramid with an arrow between them) and then reload each time (using the button that looks like a circular arrow)

"cdma_tx_hier.grc",

"chopper_correlator.grc",

"cdma_rx_hier.grc",

-- Reload all blocks in grc

-- Load the application "cdma_txrx.grc" and have fun

How can i do that. Each files opened has missing modules. I am not very sure how do integrate this.

[anastas]

Apparently you have not installed cdma succesfully! The Import blocks in the above figure say "Import None" which means you have not succesfully imported the cdma module.

Open python: Do:

import cdma

if this command gives you an error, it is safe to assume you have not succcesfully installed the software.

[patel999jay]

Hi,

Thanks for your reply. Here is what i have after doing import cdma in python.

jay@jay-MS-7885:~/gr-cdma/apps$ python
Python 2.7.17 (default, Nov  7 2019, 10:07:09) 
[GCC 7.4.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cdma
CDMA PARAMETERS : for adaptive coded modulation
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/cdma/__init__.py", line 34, in <module>
    import cdma_parameters
  File "/usr/local/lib/python2.7/dist-packages/cdma/cdma_parameters.py", line 110, in <module>
    local_header_obj = cdma.packet_header2(bits_per_header,length_tag_name,num_tag_name, header_mod.bits_per_symbol(),tcm_type_selector_default, "tcm_type") 
AttributeError: 'module' object has no attribute 'packet_header2'

[patel999jay]

Perfect, I looked after my cmake log and find out that my SWIG module is out of date and i did updated with that and now i think its working fine. Thanks a lot for your help.

[anastas]

In your initial attached figure you seemed to have been using gnuradio 3.8 which required python3 and is not compatible with gr-cdma.

Now you seem to be using gnuradio 3.7

Can you confirm that indeed this was the case.

In any case, which version of gnuradio are you using?

[patel999jay]

Hey Anastas,

You were right. if was newer version of gnuradio 3.8 which i build using ubuntu but i looked it over and seems like your module is not on python3 so i build gnuradio from source and checkout previous version, and try to import your module and it works.

[patel999jay]

@anastas : Are you planning to port this to newer version of gnuradio 3.8 by any chance ?