Re: [Discuss-gnuradio] UCLA ZigBee PHY 64 chip-sequences

[bjoernm]

Thanks for the reply!

Any other suggestions? I'm trying to change the UCLA ZigBee PHY to do  
spreading and
despreading using a table of 16 64-chip-sequences instead of the 16  
32-chip sequences.
The files I have edited are listed below.
Now, as it is still not working, I'm looking for hints, suggestions or  
anything at all,
whether there might be more code to edit in order to achieve this goal...

best regards and thanks a lot for the help

Quoting "Jason Uher" <address@hidden>:

[Hide Quoted Text]
I have experience with the code, but you might try grep to find
references to old number of bits or variables.

Jason

On Mon, Aug 16, 2010 at 11:34 AM,  <address@hidden> wrote:
Hi everyone,

I use the UCLA ZigBee PHYsical Layer with gnuradio and USRP. And now I try
to increase the number of chips per symbol within the Symbol-to-chips-table
from 32 chips per 4 bit symbol to 64 chips.

I adopted the three files
- "ucla_ieee802_15_4_packet_sink.cc"
- "ucla_ieee802_15_4_packet_sink.h" and
- "ucla_symbols_to_chips_bi.cc" .

I also generated a 64 bit Symbol_Table, CHIP_MAPPING respectively using the
OQPSK -> MSK encoding as described in the papaer:
"GNU Radio 802.15.4 En- and Decoding"

But still it is not working. I assume that there might be some other parts
of the code, which depend on whether the chip-sequences are 32 chips or 64
chips and I was wondering if you might be able to give me a hint where to
look!? Even after going through the files from UCLA, i couldn't figure out
where this might be!?

Help would be highly appreciated!
Thanks a lot for your help,
Best regards,
Björn


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