Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-30 Thread Bastian Bloessl
Hi, > On 30 Jan 2017, at 07:25, Nikita Airee wrote: > > I have a certain update regarding my issues and I'm hoping get some new > perspective. > > I repeated my experiments randomizing the mac addresses and payload. You were > quite right that the issue might be related to suboptimal wavefor

Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-29 Thread Nikita Airee
Hello, I have a certain update regarding my issues and I'm hoping get some new perspective. I repeated my experiments randomizing the mac addresses and payload. You were quite right that the issue might be related to suboptimal waveform. Because sequence numbers which were always erroneous seemed

Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-17 Thread Bastian Bloessl
Hi, On 01/17/2017 11:13 AM, Nikita Airee wrote: - Make sure that the xy plot shows clear constellations. tx_gain is set to 30dB and rx_gain to 0. If constellations don't look nice, you could try lowering the tx and increasing the rx gain. (also make sure that the antenna

Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-15 Thread Bastian Bloessl
Hi, On 01/16/2017 05:37 AM, Nikita Airee wrote: I haven't modified the flowgraphs from the examples folder at all, except changing the variables/values for the experiment. It is for those original flowgraphs of wifi_tx and wifi_rx that I get the deterministic error. Besides checking the gnuradi

Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-15 Thread Nikita Airee
I haven't modified the flowgraphs from the examples folder at all, except changing the variables/values for the experiment. It is for those original flowgraphs of wifi_tx and wifi_rx that I get the deterministic error. Besides checking the gnuradio threads, is there anything else I could do to fin

Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-15 Thread Bastian Bloessl
Hi, On 01/15/2017 07:03 AM, Nikita Airee wrote: The packet padding was enabled when I ran the flowgraph earlier with the pad front/back set to the default values of 1000/100. So I increased the values of the padding which lead to some improvement. However those warnings wouldn't go away compelet

[Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-14 Thread Nikita Airee
Sorry for replying so late, I was stuck somewhere yesterday. The packet padding was enabled when I ran the flowgraph earlier with the pad front/back set to the default values of 1000/100. So I increased the values of the padding which lead to some improvement. However those warnings wouldn't go aw

Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-13 Thread Bastian Bloessl
Hi On 01/13/2017 05:50 PM, Nikita Airee wrote: > Thanks for your prompt response! > > I have tried connecting the wifi_tx and wifi_rx in loopback > configuration. At 10Packets/s, it would give me a lot of "Warning: > starting to receive new frame before old frame was complete" messages. You shou

Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-13 Thread Nikita Airee
Thanks for your prompt response! I have tried connecting the wifi_tx and wifi_rx in loopback configuration. At 10Packets/s, it would give me a lot of "Warning: starting to receive new frame before old frame was complete" messages. So quite a lot of packets didn't reach the MAC decoding stage. To e

Re: [Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-13 Thread Bastian Bloessl
Hi, On 01/13/2017 11:17 AM, Nikita Airee wrote: > Hi everyone! > > * Ubuntu 14.04 > * Gnuradio version : 3.7.10.1, UHD_3.11.0.git-28-gc66cb1ba > * 2 USRP 2953R(x310 + cbx40) connected to host laptops using pcie > cable, antennae=vert2450 > * center frequency=2.484GHz, samp_rate=10MHz

[Discuss-gnuradio] strange deterministic frame error in gr-ieee802-11

2017-01-13 Thread Nikita Airee
Hi everyone! - Ubuntu 14.04 - Gnuradio version : 3.7.10.1, UHD_3.11.0.git-28-gc66cb1ba - 2 USRP 2953R(x310 + cbx40) connected to host laptops using pcie cable, antennae=vert2450 - center frequency=2.484GHz, samp_rate=10MHz I have been transmitting at the rate of 10 Packets/s over