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Re: [Discuss-gnuradio] Synchronization within the same USRP

From: Aldalbahi, Adel
Subject: Re: [Discuss-gnuradio] Synchronization within the same USRP
Date: Tue, 18 Oct 2016 15:43:08 -0400

Hello Marcus,

PC is connected  to USRP via 1G ethernet cable. Here is my NIC for this specific setup:

eth1      Link encap:Ethernet  HWaddr 34:17:eb:a5:5a:f1 
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::3617:ebff:fea5:5af1/64 Scope:Link
          RX packets:38828790 errors:0 dropped:0 overruns:0 frame:0
          TX packets:37442520 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:55487116438 (55.4 GB)  TX bytes:45938732293 (45.9 GB)
          Interrupt:20 Memory:f7d00000-f7d20000

USRP add was changed to .3. One more thing to mention going back to flow graph, the unpack k bits block if K set to 8 then i guess in this case I'm comparing bit by bit since K was mentioned in document to unpack bytes to bits according to the set k value. The BER gives 0.0078 after changing K, bits per symbols and unpacked to packed while bypassing the delay block. After simulating the same setup without the USRP i found 0.0075 BER instead of zero!! since there was no error introduced in the simulation.

Any suggestion ?

Thank you   

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