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Re: [Discuss-gnuradio] Yet another kick at the cheap-hardware can


From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] Yet another kick at the cheap-hardware can
Date: Wed, 19 Jan 2011 23:43:35 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Thunderbird/3.1.7

Hi Marcus,
Who works on this project now?
Nobody, really, except that I've posted a few "straw man" designs.

Why choose USB as the interface to host. The USB interface became the bandwidth bottleneck
in USRP1, so why use network interface?
USB-2.0 is relatively cheap to implement, which is *one* of the project goals.

Using 8-bit samples, you can achieve roughly 16Msps.  Using 4-bit samples, you can do better.
  4-bit samples reduces your dynamic range, but for certain high-bandwidth applications, that's
  OK.



-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org

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