Re: [Discuss-gnuradio] sbx board realize RF1 send and RF2 receive simultaneously

[Marcus Müller]

Basic simultaneous RX and TX can be implemented that way, yes. Why don't you just go ahead and try?

For synchronization, use the message passing interface to send timed tune commands etc, and use tx_time stream tags to specify the time something is sent. You can extract the time something was received by looking for rx_time stream tags and using the sample count.

A good method to start RX and TX exactly synchronous is using python to call "set_time_next_pps" and "set_start_time" on the source and sink.

Best regards,
Marcus

On 01.02.2016 06:17, w xd wrote:

Hi,

       I'm now using the usrp n210 and the sbx board.My question is:how to implementation the function that RF1 send and RF2 receive simultaneously in the grc?

Just add the "USRP Sink" and "USRP source"  block in one grc and choose the antenna "TX/RX" and "RX" respectively?Is this a synchronization way?

      Thanks.

Best regards,

zs

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