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Re: [Discuss-gnuradio] [BBN_USRP2] Barker (de)spreading
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From: |
Jason Uher |
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Subject: |
Re: [Discuss-gnuradio] [BBN_USRP2] Barker (de)spreading |
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Date: |
Thu, 14 May 2009 21:15:21 -0500 |
> are using a raised cosin as the TX/RX filter. Perhaps you can swap out that
> filter with the barker filter to test if the bits are being decoded
> correctly.
You will still need the RRC filter after barker coding. You can't
really send direct plus/minus one data to the USRP because you can't
reproduce that in hardware, not to mention if you try you will end up
with a terrible spectrum. There needs to be a nice transition between
bits, which the RRC helps with.
Jason