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Re: [Discuss-gnuradio] BBN 80211b Transmitter with GNURadio 3.2.2 and US

From: Douglas Geiger
Subject: Re: [Discuss-gnuradio] BBN 80211b Transmitter with GNURadio 3.2.2 and USRP1
Date: Thu, 20 May 2010 13:09:28 -0400

 You probably want to take a look at the usrp2_version branch to see
how to get the transmit code working with the hier_block2 API, and
then modify it to work with the USRP1. Two things: you cannot transmit
the 802.11b waveform through the USRP1 (you don't have enough
bandwidth - in the original code base I believe they simply skipped
the DSSS step, and transmitted the pulse-shaped DPSK-modulated
signal), also I believe the usrp2_version branch transmit code fixed
some of the bugs in the original transmit code (i.e. using a USRP2,
the transmit code could send a standard-compliant waveform).

On Thu, May 20, 2010 at 12:47 PM, Smith L. <address@hidden> wrote:
> Hello all,
> I am trying to use bbn 80211b transmitter code (douggeiger version from
> cgran website) with GNU Radio 3.2.2 with USRP1. However, it seems like the
> Tx code has not been modified completely to work with hier_block2 APIs. I
> tried to make changes on my own and ended up with an error that I do not
> know how to solve?
> I am having a Itemsize mismatch error for message source and
> bbn_80211_bb_mod.
> I am using Ubuntu 8.04, Gnuradio 3.2.2, Python 2.6 and USRP1s. I looked up
> the mailing list and I found very little information for Tx code as
> everybody seems to be working on the receiver code.
> Does any one have a working copy of bbn_80211b_tx.py of douggeiger version
> that works with GNURadio 3.2.2 and USRP1.
> Any help would be greatly appreciated.
> Thanks
> Smith
> --
> View this message in context: 
> http://old.nabble.com/BBN-80211b-Transmitter-with-GNURadio-3.2.2-and-USRP1-tp28623863p28623863.html
> Sent from the GnuRadio mailing list archive at Nabble.com.
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Doug Geiger

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