Re: [Discuss-gnuradio] Running gr-ieee 802.11 and gr-ieee 802.15.4 under same flowgraph (interference and co-existence)

[Bastian Bloessl]

Hi,

thanks for the detailed description. I’m not sure what the actual error is. 
What do you mean with grc turns dark.
Does it crash or stop receiving or actually show a black window? Did grc turn 
dark or the flow graph?

Best,
Bastian



> On 4. Jul 2017, at 22:10, sumitstop <address@hidden> wrote:
> 
> Hello, 
> (Its a long post :) as I want to give as much details as possible)
> 
> Today I did a strange experiment. Under GNU Radio companion, I created a
> blank project. Then I copy pasted the wifi_loopback.grc from gr-ieee 802.11
> to my blank project and made it run. Off course I took care of the initial
> settings of the variables and all. It ran successfully. Then I copy pasted
> the transceiver_OQPSK.grc from gr-ieee 802.15.4 to the same grc project
> where wifi_loopback.grc was there. Then I separated the variables carefully
> and make both wifi_loopback and transceiver_OQPSK to run under the same flow
> graph at the same time. They ran successfully without any issue! 
> 
> In the next step, I tried to create an environment of interference between
> WiFi and ZigBee by adding the baseband output of WiFi transmitter and ZigBee
> transmitter. But before that I upsampled the ZigBee 5 times to make it 20
> MHz wide. 
> 
> In the next step, I took the output of mixed signal i.e. ZigBee + WiFi and
> fed it to individual receivers. Here also I downsampled the mixed signal to
> 4 MHz before feeding it to the ZigBee receiver. 
> 
> But this setup din't work at all. The grc just turned dark. There were no
> error messages. I am not sure where I am theoretically and/or practically
> wrong. 
> 
> * I am trying to analyse WiFi and ZigBee interference. 
> 
> Regards