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| From: | Brent M. Ledvina |
| Subject: | [Discuss-gnuradio] different decimation rates on one USRP |
| Date: | Tue, 4 Sep 2007 10:18:13 -0400 |
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Hi, I am running into a USB bandwidth issue. I'm sampling data simultaneously from 2 daughter boards at a decimation rate of 10. This produces 2*6.4 MS/s * 4 bytes/I and Q sample = 48 MB/s. My application requires one board to have a decimation rate of 10, but the other can have a decimation rate of ~30. My understanding of the USRP is that you cannot easily (i.e. in software) use different decimation rates for different daughter boards on the same USRP. My questions are: 1.) Is this easy to do at the FPGA level? 2.) Has anyone tried this before? Regards, Brent ----------------------------------------------- Prof. Brent M. Ledvina Assistant Professor Space @ Virginia Tech Wireless @ Virginia Tech 643 Whittemore Hall Bradley Department of Electrical and Computer Engineering Virginia Tech Blacksburg, VA 24061 ph: 540.231.0656 Office Hours: M 1-2, T 1-3 |
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