discuss-gnuradio
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Discuss-gnuradio] UHD USRP2 full duplex mystery solved


From: Tuan (Johnny) Ta
Subject: Re: [Discuss-gnuradio] UHD USRP2 full duplex mystery solved
Date: Fri, 14 Oct 2011 10:18:01 -0400

Vijay,

Can you post a GRC file with full-duplex configuration? I have the XCVR2450 board so I know I can only get half-duplex. Does the GRC full-duplex flow graph for the WBX board achieve half-duplex for the XCVR2450 board?

Thanks,
Johnny

On Mon, Mar 14, 2011 at 12:37 PM, Vijay Pillai <address@hidden> wrote:
Hi Marc,

How much leakage are you seeing between TX and RX on a WBX board?

Yeah, GRC works fine for full duplex and it is very easy to set it up.

Best regards,
-Vijay

--- On Mon, 3/14/11, Marc Epard <address@hidden> wrote:

From: Marc Epard <address@hidden>
Subject: Re: [Discuss-gnuradio] UHD USRP2 full duplex mystery solved
To: "Scott Johnston" <address@hidden>
Cc: "discuss-gnuradio Discussion Group" <address@hidden>
Date: Monday, March 14, 2011, 12:12 PM


On Mar 14, 2011, at 8:53 AM, Marcus D. Leech wrote:

> On 14/03/2011 9:42 AM, Scott Johnston wrote:
>> Does anybody have an example of how to setup a full duplex app?
>>
>> I am using the uhd with the USRP n210.
>>
>> Marc Epard wrote:
>>> I've been attempting to do a full duplex send/recv using UHD on a USRP2 with an XCVR2450.
>
> The XCVR2450 *hardware* doesn't support full-duplex at all, so no amount of cleverness on the software side can change that.

Although the XCVR2450 doesn't do full duplex, the WBX does, and current UHD avoids the problem I described in my previous message. However, the WBX has enough internal leakage between tx and rx that we gave up on single-daughterboard full duplex. We now use a USRP2 with a WBX for tx and a USRP N210 with a DBSRX2 for rx.

As for examples, I'll try to clean up my C++ app and post it later this week. GRC works fine full-duplex, too, I believe.

-Marc


_______________________________________________
Discuss-gnuradio mailing list
address@hidden
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio


_______________________________________________
Discuss-gnuradio mailing list
address@hidden
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio



reply via email to

[Prev in Thread] Current Thread [Next in Thread]