Hi Xianda, as Martin said: > So, the OFDM code does *not* add EOB Greetings, Marcus
On 30.07.2014 18:06, xianda wrote: > > > Hi Marcus: > Thank you.I just want to know whether the example tx_ofdm.grc > add start_of_burst at the beginning of every packet and add end_of_burst at > the end of every packet? > Best regards, > xd > > > > > > > At 2014-07-31 00:03:33, "Marcus Müller" <[email protected]> wrote: >> Sorry Xianda, >> I'm still not understanding completely. >> Is this question about a) tx_ofdm.grc, or b) not about GNU Radio? >> >> Best regards, >> Marcus >> >> On 30.07.2014 17:51, xianda wrote: >>> Hi Marcus: >>> Thank you so much.I just want to make some changes on the >>> example of tx_ofdm.grc.And I use the UHD not the gnuradio.But the example >>> is about the gnuradio.I know a packet in the example tx_ofdm.grc include a >>> preamble,a header,the payload and crc value.And I want to know whether need >>> I add start_of_burst at the beginning of every packet and add end_of_burst >>> at the end of every packet?Am I right? >>> Best regards, >>> xd >>> >>> >>> >>> >>> >>> At 2014-07-30 11:39:02, "Marcus Müller" <[email protected]> wrote: >>> Hi Xianda, >>> if you don't use gnuradio, this might not be the right list for you... >>> Anyway, I think it's possible you're confusing something. start_of_burst / >>> end_of burst are stream tags that are GNU Radio concepts. There is not >>> something like this without GNU Radio. >>> UHD supports timed commands, which might be close to what you need, but I >>> really don't understand what your question aims at. >>> >>> Greetings, >>> Marcus >>> >>> >>> On 30.07.2014 16:50, xianda wrote: >>> >>> Hi: >>> Thank you so much for your kindly reply.I write c++ code use the uhd >>> not gnuradio.So need I add start_of_burst at the beginning of every packet >>> and add end_of_burst at the end of every packet?Thank you. >>> Best regards, >>> xd >>> >>> >>> >>> >>> >>> >>> At 2014-07-30 10:05:47, "Martin Braun" <[email protected]> wrote: >>> >>> On 07/30/2014 03:59 AM, xianda wrote: >>> >>> Hi all: >>> I know a packet in the example tx_ofdm.grc include a preamble,a >>> header,the payload and crc value.Recently I have used the UHD API to >>> send packet.And I want to know whether the tx_ofdm.grc add >>> start_of_burst and end_of_burst automatically.Namely,need I add >>> start_of_burst at the beginning of every packet and add end_of_burst at >>> the end of every packet? >>> >>> usrp_sink understands tagged streams. So, the OFDM code does *not* add >>> EOB, but that doesn't matter if you have an up-to-date gr-uhd. >>> >>> M >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> [email protected]https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> [email protected]https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>>
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