On 10/16/2014 11:50 AM, Vanush Vaswani wrote: > Is it possible to do 11ac on SDR?
Vanush, the answer to *any* question of the type "can we do standard X on SDR" is always 'yes'. Are you planning to do this yourself, or are you looking for a finished solution? Also, what's your goals? M > > On Wed, Oct 15, 2014 at 10:07 PM, Bastian Bloessl <bloe...@ccs-labs.org> > wrote: >> Hi, >> >> On 10/10/2014 06:20 PM, Zhang, Jiayi wrote: >>> >>> Dear Marcus and Bloessl, >>> >>> Thanks for the reply. I also notice the fully functional gr-ieee802-11 >>> package provide by Bloessl. Previously I thought it's only PHY, but as >>> Marcus mentioned it also include MAC. It seems to me in the >>> gr-ieee802-11-master package, the MAC does not run csma. I also find the >>> gr-ieee802-11-csma package, which is smaller than the master package but >>> indicate "csma" in name and one of examples. >> >> >> Sorry, I don't get what you mean with smaller. Are you talking about the >> file size of the sources? >> All branches add / parse the MAC header as defined in the standard. So the >> frame format is OK on all branches. The 'csma' branch implements channel >> access for broadcast frames. >> >>> After checking the Readme >>> and other pulications from WIME project, I cannot find detail >>> description regarding the MAC and CSMA function for the package. >> >> >> It's the one at the top >> http://www.ccs-labs.org/bib/bloessl2014timings/ >> >>> >>> 1. Does the csma package should be used with the master package? >> >> >> No. 'csma' is the name of a branch. You would checkout and use that branch. >> >>> 2. Does the csma package support multiple nodes in an ad-hoc network? >> >> >> The CSMA implementation is for broadcast frames only. So depends on what you >> want to do. >> >>> >>> Return to Marcus's advice, do you mean that to realize the MAC (CSMA), >>> we still need implement FPGA (not the one in USRP?) to handle it in >>> hardware, no matter we use the software lib, e.g. GRU Radio or Click >>> Module Router? >> >> >> To support CSMA functionality you will have to change the FPGA otherwise you >> will not be able to meet the timing constraints of 802.11. For the broadcast >> case you only need some small changes. >> If you want to support ACKS and RTS/CTS you need a lot of functionality on >> the FPGA. In my opinion this will not happen on a N210, but AFAIK Ettus has >> a 802.11 implementation for RFNoC (i.e. for the FPGA) which most likely >> meets all timing constraints. >> >> Best, >> Bastian >> >>> >>> Many thanks for your help again! >>> >>> Best regards, >>> Jiayi >>> >>> >>> On Thu, Oct 9, 2014 at 4:05 PM, Marcus Müller <marcus.muel...@ettus.com >>> <mailto:marcus.muel...@ettus.com>> wrote: >>> >>> Hi Jiayi, >>> >>> :) gr-ieee802-11 is, as far as I know, the most comprehensive, >>> functional implementation so far. It *can* talk to consumer cards -- >>> but >>> of course, that's not because it has a complete MAC implementation. >>> Actually, doing a really standards-compliant IEEE802.11agp MAC can't >>> really be done in host software alone -- the gigabit ethernet >>> interface >>> alone just has too much latency, and you'll have to be really fast >>> when >>> detecting ACK's, calculating checksums and sending out the reply. I >>> doubt you can implement a fully working IEEE802.11 MAC in software >>> alone >>> without touching the FPGA. >>> >>> Here's the official source code: >>> https://github.com/bastibl/gr-ieee802-11 has the source code, btw. >>> >>> >>> Greetings, >>> Marcus >>> On 09.10.2014 21:47, Zhang, Jiayi wrote: >>> > Dear Marcus and all, >>> > >>> > Many thanks for the advice regarding the Hydra and ORBIT project. >>> > >>> > Actually I'm looking for the open-source 802.11 PHY&MAC packages >>> which are >>> > compatible with Recent GNU Radio and USRP N210/X310. >>> > >>> > I've searched from internet and got some findings listed below: >>> > 1) Hydra PHY & MAC from University of Texas at Austin [1] >>> > 2) FTW IEEE802.11a/g/p OFDM Frame Encoder [2] >>> > 3) UWICORE m-HOP 802.11 MAC for USRP based on the FTW PHY [3] >>> > http://www.uwicore.umh.es/mhop-software.html >>> > *** All (1-3) only compatible with gnuradio-3.2.2 which was too >>> many years >>> > ago. >>> > >>> > 4) WIME IEEE 802.11a/g/p Transceiver for GNU Radio v3.7 [3] >>> > http://www.ccs-labs.org/software/gr-ieee802-11/ >>> > *** This is a most recent package for gnuradio 3.7, but is PHY >>> only. Are >>> > there any MAC package which compatible with this WIME PHY? >>> > >>> > 5) ORBIT Project [5] >>> > *** This is a huge project which can be studied. Are there any >>> project >>> > provide both 802.11 MAC & PHY like Hydrd did before? >>> > >>> > Best regards, >>> > Jiayi >>> > >>> > [1] K. Mandke, Soon-Hyeok Choi, Gibeom Kim, R. Grant, R. Daniels, >>> Wonsoo >>> > Kim, R. W. Heath, Jr., and S. Nettles, “Early Results on Hydra: A >>> Flexible >>> > MAC/PHY Multihop Testbed,” Proc. of IEEE Vehicular Tech. Conf. , >>> pp. >>> > 1896-1900, Dublin, Ireland, April 23 – 25, 2007. >>> > [2] http://www.cgran.org/wiki/ftw80211ofdmtx >>> > [3] J.R. Gutierrez-Agullo, B. Coll-Perales and J. Gozalvez, "An >>> IEEE 802.11 >>> > MAC Software Defined Radio Implementation for Experimental Wireless >>> > Communications and Networking Research", Proceedings of the 2010 >>> IFIP/IEEE >>> > Wireless Days (WD'10), 20-22 October 2010, Venice (Italy). >>> > [4] Bastian Bloessl, Michele Segata, Christoph Sommer and Falko >>> Dressler, >>> > "An IEEE 802.11a/g/p OFDM Receiver for GNU Radio," Proceedings of >>> ACM >>> > SIGCOMM 2013, 2nd ACM SIGCOMM Workshop of Software Radio >>> Implementation >>> > Forum (SRIF 2013), Hong Kong, China, August 2013, pp. 9-16. >>> > [5] http://www.orbit-lab.org/ >>> > >>> > >>> > On Thu, Oct 9, 2014 at 1:02 PM, Marcus Müller >>> <marcus.muel...@ettus.com <mailto:marcus.muel...@ettus.com>> >>> >>> > wrote: >>> > >>> >> Yes. Nothing in GNU Radio or UHD (the USRP driver framework) is >>> >> distribution-specific, so transition from Ubuntu to Fedora >>> should not be >>> >> a problem >>> >> >>> >> Good luck with finding a "new version" of Hydra; I didn't find any >>> >> publication after 2009 on a quick first glance on google >>> scholar[1]. And >>> >> I couldn't find the source code anywhere. Honestly: If you don't >>> find >>> >> anything that proves otherwise, I'd presume that Hydra is kind >>> of dead >>> >> [2]. Please prove me wrong on this! >>> >> >>> >> There is the ORBIT lab that has come up with a rather >>> comprehensive >>> >> infrastructure for wireless testbeds, so you might want to look >>> at that[3]. >>> >> >>> >> Greetings, >>> >> Marcus >>> >> >>> >> [1] >>> >> >>> >> >>> >>> http://scholar.google.de/scholar?q=%22Robert+W.+Heath%22+hydra&hl=en&as_sdt=0%2C5&as_ylo=2010&as_yhi= >>> >> [2] https://www.youtube.com/watch?v=r0yXqU-w9U0 >>> >> [3] http://www.orbit-lab.org/ >>> >> On 09.10.2014 16:41, Zhang, Jiayi wrote: >>> >>> Hi Marcus, >>> >>> >>> >>> Another question is that, if we development the software with >>> GNU Radio >>> >> and >>> >>> USRP in Ubuntu, is it easy to transfer to Fedora? >>> >> Thanks for your reply. I think the best way to us is to find the >>> new >>> >> version of Hydra package which is based on the recent GNU Radio >>> version >>> >> working with current USRP produces. >>> >> >>> >>> Many thanks! >>> >>> >>> >>> Regards, >>> >>> Jiayi >>> >>> >>> >>> On Wed, Oct 8, 2014 at 11:11 AM, Marcus Müller >>> <marcus.muel...@ettus.com <mailto:marcus.muel...@ettus.com> >>> >>> >>> >>> >>> wrote: >>> >>> >>> >>>> Hello Jiayi, >>> >>>> >>> >>>> 3.2.2 is *very* ancient. In fact, it's older than my >>> involvement with >>> >> GNU >>> >>>> Radio, and I think it will be very hard to find someone how's >>> still >>> >> using >>> >>>> it, so asking for experience, I'm afraid, is not going to >>> yield a lot of >>> >>>> responses in 2014. >>> >>>> Therefore, it will be nearly impossible to recreate an >>> environment with >>> >>>> all the GNU Radio dependencies that match the needs of GNU >>> Radio 3.2.2. >>> >>>> >>> >>>> I'm not familiar with Hydra itself; but if it uses GR 3.2.2 >>> you won't be >>> >>>> able to use it with modern USRPs, you won't have much fun >>> developing new >>> >>>> applications for it, and in total it might be wise to look if >>> you can >>> >>>> either find a suitable substitute or port it to a modern GNU >>> Radio. >>> >>>> >>> >>>> However, I'm optimistic that someone else here has used Hydra, >>> and maybe >>> >>>> he has some more specific hints than I do. >>> >>>> >>> >>>> Greetings, >>> >>>> Marcus >>> >>>> >>> >>>> >>> >>>> On 08.10.2014 16:50, Zhang, Jiayi wrote: >>> >>>> >>> >>>> Dear all, >>> >>>> >>> >>>> I'm a beginner of GNURadio but I'm familiar with some basis of >>> Linux >>> >> when I >>> >>>> use C++ & IT++. Currently I'm trying to test the Hydra-0.4 >>> package for >>> >>>> evaluation under the last ubuntu ver 14.04.1 32bit. During the >>> >> installation >>> >>>> of gnuradio-3.2.2, there is an error which I cannot find the >>> solution on >>> >>>> internet. >>> >>>> >>> >>>> gnuradio-3.2.2$ ./bootstrap && ./configure --prefix=$GR >>> >>>> … >>> >>>> checking for boost >= 1.35... yes >>> >>>> checking whether the boost::thread includes are available... yes >>> >>>> configure: error: Could not link against libboost_thread! >>> >>>> >>> >>>> ‘libboost-all-dev’ has already installed, including >>> >> ‘libboost-thread-dev’, >>> >>>> I tried both version 1.54 and 1.55 of libboost. I've also >>> searched the >>> >>>> error message in Google, even after I installed the >>> 'build-essential' >>> >>>> package, the error remains the same. >>> >>>> >>> >>>> I will be much appreciated if any of you have such an >>> experience and >>> >> would >>> >>>> feedback some solutions. >>> >>>> >>> >>>> Regards, >>> >>>> Jiayi (Vincent) >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio