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Re: [Discuss-gnuradio] UHD Announcement - December 13th 2010 - MIMO cab

From: bobb
Subject: Re: [Discuss-gnuradio] UHD Announcement - December 13th 2010 - MIMO cable support
Date: Tue, 14 Dec 2010 01:04:35 +0000


  This is great!

  Although it goes without saying, I'm assuming users should also need to keep 
in mind that there's no magic going on here w.r.t. gigE bandwidth (i.e., one U2 
running "wide open" can pretty much consume an entire gigE port. Now that 
you've got 2 U2's sharing a single connection each one (on average) should be 
run at no more than 1/2 max bandwidth). right?


>-----Original Message-----
>From: Josh Blum [mailto:address@hidden
>Sent: Monday, December 13, 2010 07:34 PM
>To: address@hidden, address@hidden
>Subject: [Discuss-gnuradio] UHD Announcement - December 13th 2010 - MIMO       
>cable support
>Hello list,
>I would like to announce support for the MIMO cable with UHD. The
>support is experimental, so its not in the mainline yet, and is only
>available for USRP2 at the moment.
>The source for the FPGA code has not yet been pushed but you can get the
>pre-built images here:
>The supporting host code is available on the packet_router branch of the
>uhd repo:
>Here is an excerpt from the docs on the MIMO cable in UHD:
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> MIMO cable configuration
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> Using the MIMO cable, two USRP devices can be grouped together in a 
>> multi-device configuration.
>> Only one device in the configuration can be attached to the ethernet.
>> This device will be referred to as the master, and the other device, the 
>> slave.
>> * The master provides reference clock and time synchronization to the slave.
>> * All data passing between the host and the slave is routed over the MIMO 
>> cable.
>> * Both master and slave must have different IPv4 addresses but in the same 
>> subnet.
>> * The master and slave may be used individually or in a multi-device 
>> configuration.
>I hope that explains it. Feedback is welcome!
>Discuss-gnuradio mailing list

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