On Friday 24 June 2005 18:31, John Gilmore wrote: > You've just reinvented the first ten instructions of TCP packet > processing.
I for one am very familiar with the work of '[EMAIL PROTECTED]' and have been in awe of your work for some time. I have not been at this nearly as long as you, but I'm glad you remind people that there really is a history here, and reinventing already working wheels is counterproductive in a manner. Sometimes it can be educational, but that's a different story. Yet the computing landscape is riddled with wheels that have been reinvented dozens of times; simply because it is impossible for any one person to be familiar with all the different wheels out there. But in the age of Google, simply searching for what you need is better than going off on your own. That is why I waited on the USRP availability; I have needed this functionality for at least five years, but the tech wasn't there yet, and, quite honestly, the effort is large. I waited with bated breath for Matt to announce that USRP's could be bought, and bought one as soon as I could afford to do so. And am enjoying it immensely! I think the next logical step is either PCI-e (which could scale to outside the box), some form of SATA, or Infiniband or one of its variants. But honestly USB2 is not a bad solution and is great for what the USRP does today. IPv6 with QoS might be able to deal with what hard realtime applications like data acquisition and software radio need; but quite honestly it is a lot of overhead for the application. IPv4 is insufficient for hard realtime; dropping packets in software radio really isn't an option, otherwise out-of-band emissions could result, and our friendly neighborhood EIC at the FCC's EB won't like that (and neither will your wallet when you get the NAL for $10,000 for unlicensed operation!). The problem there is the currently regulated nature of spectrum usage; maybe one day cognitive radios will be able to deal with wide-open spectrum usage; but, even then, the protocols and software of the cognitive SDR (and the developers of this software and firmware!) are responsible at that point for staying within regulatory bounds. But, back to Ethernet, I'd simply reference what Gibson (as in guitars) is doing with Ethernet. See http://www.wired.com/wired/archive/12.01/guitar.html and http://www.macworld.com/news/2005/01/24/gibson/index.php and http://www.networkworld.com/net.worker/columnists/2003/0602kistner.html for a brief introduction. Or google for 'gibson guitar ethernet' and read the hundreds of pages yourself. :-) Power over Ethernet; in a guitar of all things. Priceless. -- Lamar Owen Director of Information Technology Pisgah Astronomical Research Institute 1 PARI Drive Rosman, NC 28772 (828)862-5554 www.pari.edu _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
