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From: | Jeff Long |
Subject: | Re: [Discuss-gnuradio] Transmit time synchronization |
Date: | Mon, 13 Oct 2014 10:05:11 -0400 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.1 |
On 10/13/2014 08:57 AM, Muhammad Shahmeer Omar wrote:
sorry disregard previous mail I am trying to implement a multi-relay cooperative network using gnuradio and USRP B200. I cannot figure out how to synchronize the relay transmissions using GNU-Radio (without editing FPGA code or using external clock source). I created an out of tree module derived from the tags_demo example of uhd but i encounter a problem with the packet encoder. my flow graph is something like USRP source ---> tagging_block ---> DBPSK demod -->packet decoder --> encoder --> mod --> USRP sink. when i attach tag debug block, i see that the packet decoder is not propogating my tags. Are their any substitutes to the encoder or is
The packet_decoder block has a message queue in the middle of its implementation, so tags are not propagated. Not sure how to get around this.
there any problem with my code which is attached. Any help would be very welcome. Thanks! On Mon, Oct 13, 2014 at 5:53 AM, Muhammad Shahmeer Omar <address@hidden <mailto:address@hidden>> wrote: Hello all, I am trying to implement a multi-relay cooperative network using gnuradio and USRP B200. I cannot figure out how to synchronize the relay transmissions using GNU-Radio (without editing FPGA code or using external clock source). I created an out of tree module derived from the tags_demo example of uhd but i encounter a problem with the packet encoder. my flow graph is something like USRP source ---> tagging_block ---> DBPSK demod -->packet decoder --> encoder --> mod --> USRP sink. _______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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