Re: [Discuss-gnuradio] gr-cdma is ready

[Karan Talasila]

Hi Achillaes, 

                  can you tell me where the documentation of all the blocks used in cdma_tx and cdma_rx are? I tried the cdma_trrx.grc and i got a menu list with options to change freq and timing offset and eb/N0. But i wasn't able to transmit and recieve packets or know how changing parameters in the menu is changing the output. I would like to look into the documentation of inidvidual blocks to understand better.

On Fri, Mar 7, 2014 at 3:44 AM, Achilleas Anastasopoulos <address@hidden> wrote:

Dear all,

the OOT module gr-cdma that we have been working on with Zhe Feng is now ready (also fully documented). You can find it here:

https://github.com/anastas/gr-cdma.git

An important acknowledgement:

this project grew out of the DARPA SPECTRUM CHALLENGE:

our team eventually dropped out of the race because of other time commitments but I and Zhe decided to finish up the design and make it publicly available since DARPA was generous enough to send us USRPs for testing etc.

I am looking forward to feedback from the community and to ideas for expanding/improving the design.

=======================================
For the impatient:

1) Download gr-cdma from github
> git clone https://github.com/anastas/gr-cdma.git

2) Build the package
> mkdir build_cdma
> cd build_cdma
> cmake -DENABLE_DOXYGEN=ON ../gr-cdma
> make
> sudo make install

> sudo ldconfig

3) compile hierarchical blocks and play with built in app
> cd gr-cdma/apps
> gnuradio-companion &
In the gnuradio-companion environment
-- Load the hier block "amp_var_est_hier.grc", "cdma_tx_hier.grc", "chopper_correlator1.grc", "cdma_rx_hier.grc" and compile them
making sure to reload blocks after each compilation
-- Load the application "cdma_txrx.grc" and have fun
   Experiment with manual acq/tra, auto acq/tra, changing freq and timing offset, SNR, etc
-- If you have 2 USRPs load the cdma_tx.grc and cdma_rx.grc and enjoy real-time
CDMA transmission. You can also use the cdma_tx.grc and cdma_rx.grc by writting
and reading to a fifo (first do > makefifo /tmp/cdma.fifo)
=====================================

best,

Achilleas

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--
Regards
Karan Talasila