Re: [USRP-users] Transmitting data from 2 antennas of B210

2019-07-26 Thread Zhenghao Zhang via USRP-users
Hi, I am happy to report that I was able to set up the 2-stream transmission actually without much trouble. I want to thank Michael Dickens and Ron Economos for offering valuable advice, without which I would never be able to get it done in a couple of days. I just used gnuradio-companion and con

Re: [USRP-users] Transmitting data from 2 antennas of B210

2019-07-23 Thread Zhenghao Zhang via USRP-users
Hi Michael, Thank you very much for your message. As you said, I am just trying to get the equivalent of "tx_samples_from_file." I will just need to pushing half of the data in the file to each antenna. I will look into the cpp file you pointed me to. Over 10 years ago, I spent one summer on the

Re: [USRP-users] Transmitting data from 2 antennas of B210

2019-07-23 Thread Ron Economos via USRP-users
In GNU Radio, there is a dual channel B210 example flow graph in the DTV component. The file is: /share/gnuradio/examples/dtv/vv018-miso.grc The download location of the test input file can be found in the README. /share/gnuradio/examples/dtv/README.dvbt2 It sends an Alamouti coded MISO (Mult

Re: [USRP-users] Transmitting data from 2 antennas of B210

2019-07-23 Thread Michael Dickens via USRP-users
Hi Zhenghao - To the best of my knowledge and memory, all of the examples provided by UHD and GR are just single-channel. My guess is you'll need to create your own custom flowgraph to handle 2 output channels from a single input file. That said, if what you hope to do is the equivalent of "tx_

[USRP-users] Transmitting data from 2 antennas of B210

2019-07-22 Thread Zhenghao Zhang via USRP-users
Hi, I have a very simple task: transmitting data with two antennas of B210. The data is just numbers in a file and I just need to play the file. I have been able to transmit data by one antenna with the command tx_samples_from_file. I did a lot of searching but I was not able to find a similar co