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Re: [Discuss-gnuradio] UHD Performance: Reaching 8Msps TX with USB 2.0 (

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] UHD Performance: Reaching 8Msps TX with USB 2.0 (?)
Date: Wed, 21 Mar 2012 18:33:16 -0400
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On 03/21/2012 05:45 PM, Vincenzo Pellegrini wrote:
Hi Nick, thanks for the suggestions.
I will test the args. What is the best (maximum?) possible value for the send_frame_size in order to minimize the overhead yielded by UHD?

Would it be correct to assume that the over-the-wire overhead yielded by UHD is larger than what the classic libusrp used to impose? If yes, by what scale?
No, the over-the-wire format for USRP1 hasn't changed in years and years. UHD simply makes what's always been there look more "UHD like". Neither the USRP1 firmware nor FPGA images have changed in a long time.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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