Hello all, I've got a GNURadio install on two laptops, both of which have version 3.3.0 on them. They are both Dell Latitudes E5500 with Ubuntu 9.10 x86 on them. I have two USRP2s with the correct firmware installed on the SD cards to operate the WBX daughter card (txrx_wbx_raw_eth_20100608.bin). I have been trying to run the out-of-the-box benchmark_tx/rx.py scripts to just get correct packet transfer between the two. At first I found that having the radios too close together was causing the issue but even after moving them apart it still has an unacceptable BER. I followed the install instructions as follows:
1. Install dependencies in the blip of code given for the "sudo apt-get ..." command for Ubuntu 9.10. 2. Download gnuradio-3.3.0, unpack. 3. cd; ./configure; make; sudo make install; sudo ldconfig; On a another note using a separate computer, a Sony Vaio with GNURadio 3.3.0 installed on Ubuntu 10.04 x86_64 seems to transmit to either of the Dell laptops just fine using the benchmark scripts with no errors at all. The output on the receive is as follows (Ctrl+c'ed because nothing else was transmitting): ~/Desktop/gnuradio-3.2.2/gnuradio-examples/python/digital: sudo > ./benchmark_rx.py -f 910M >>> gr_fir_fff: using SSE Requested RX Bitrate: 100k Actual Bitrate: 100k ok = False pktno = 0 n_rcvd = 1 n_right = 0 ok = False pktno = 85 n_rcvd = 2 n_right = 0 ok = False pktno = 173 n_rcvd = 3 n_right = 0 ok = False pktno = 6617 n_rcvd = 4 n_right = 0 ok = False pktno = 320 n_rcvd = 5 n_right = 0 ok = False pktno = 401 n_rcvd = 6 n_right = 0 ok = False pktno = 548 n_rcvd = 7 n_right = 0 ok = False pktno = 703 n_rcvd = 8 n_right = 0 ^C~/Desktop/gnuradio-3.2.2/gnuradio-examples/python/digital: The output on the transmit (which seems to runs all at once instead of dot by dot as the Vaio does) is as follows: ~/Desktop/gnuradio-3.2.2/gnuradio-examples/python/digital: sudo > ./benchmark_tx.py -f 910M >>> gr_fir_fff: using SSE Requested TX Bitrate: 100k Actual Bitrate: 100k ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Does anyone have any suggestions, comments, etc,? Thanks. -- Daniel Ali Graduate Student Electrical and Computer Engineering Virginia Tech
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