[Discuss-gnuradio] grc file for transmitter and receiver
i want to send and receive via the two ports i have in my USRPN210 using XCVR2450 daughter board (half duplex). the ports are RF1, RF2. so if i made in same grc file the transmitter and receiver i don't know which port transmit and which receive. any one advise me to manage transmitting receiving problem, how to check if the transmitting signal is work fine as i saw it after modulation block and before the sink?. and thanks ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] SRIF workshop paper deadline extension
Hi everyone, I hope people have been thinking about joining us in Hong Kong in August for the Software Radio Implementation Forum (SRIF) workshop. If you were thinking about producing a paper but haven't had time, I wanted to let everyone know that we have decided to extend the deadlines: Abstract/paper registrations: March 20 Paper submission date: March 28 We were running into conflicts with another large wireless conference having similar due dates, so we opted to move ours to help us all out. Hope to see some of you there! http://conferences.sigcomm.org/sigcomm/2013/srif.php Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] LibUSRP vs LibUHD Performance on older machines
On 03/11/2013 02:00 AM, Tom Hendrick wrote: Hello Josh, Thanks for responding. I just tried your suggestion. With a single USRP channel at 4MS/s and writing to four files at 500 MS/s (each of these 4 files is writing the same thing), I occasionally still see some overruns though it takes a lot longer for them to show up than with 4 channels at 1MS/s and they don't always show up eachtime i run the script. The 4 channels at 1MS/s and writing to file at 500 MS/s causes overruns every time I run the script. You presumably mean 500kSPS, rather than 500Msps here? How are you decimating the incoming sample stream down to the file-write rate? -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] modulation packet loss
Hi, When doing any type of modulation, I'm losing the last packet or two. I'm wondering if it's possible to either get rid of packetization all together or to output the piece of the last packet received even though it doesn't get filled completely. Inside of packet.py, it seems to be stuck in here: msg = self._msgq.delete_head() and doesn't get to call ok, payload = packet_utils.unmake_packet(msg.to_string(), int(msg.arg1())) Another issue I've been having that's less important is whenever I'm using it with USRP's from one computer to another, the beginning chunk of data gets lost. This may have to do with some sort of synchronization but I would have no clue where to start with that. Thanks, Patrick ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] LibUSRP vs LibUHD Performance on older machines
I'm sorry for the typo, yes after the USRP source block there is a complex to float followed by a rational resampler for each of the four channels so it decimates and records to file at 500 kS/s Thanks for catching that. -Tom From: Marcus D. Leech To: Tom Hendrick ; "Discuss-gnuradio@gnu.org" Sent: Monday, March 11, 2013 8:29 AM Subject: Re: [Discuss-gnuradio] LibUSRP vs LibUHD Performance on older machines On 03/11/2013 02:00 AM, Tom Hendrick wrote: Hello Josh, Thanks for responding. >I just tried your suggestion. > >With a single USRP channel at 4MS/s and writing to four files at 500 MS/s (each of these 4 files is writing the same thing), I occasionally still see some overruns though it takes a lot longer for them to show up than with 4 channels at 1MS/s and they don't always show up eachtime i run the script. The 4 channels at 1MS/s and writing to file at 500 MS/s causes overruns every time I run the script. You presumably mean 500kSPS, rather than 500Msps here? How are you decimating the incoming sample stream down to the file-write rate? -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Reg:Tags_demo.cc example
Hi, 1. What is get_full_seconds and get_frac_seconds printing? 2.Can we get upto precision of nano seconds using the above methods and please tell me how to do it. In the frac seconds i am getting 0.xx(only 6 digits after point-micro seconds) Thanks ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
