I want to implement a system where I will receive overlapped wifi and zigbee on the same channel using same RF front end. Then in the base band I wish to do interference cancellation.
I understand that most of the time wifi is stronger than zigbee. So if the preamble of wifi is not damaged, I will be able to get the channel estimates of wifi. Hopefully if the wifi frame has not suffered much due to interference of zigbee(which is very much possible), I can decode and regenerate the wifi signal using my channel estimates. Then I will subtract this regenerated wifi signal from the mixed signal (wifi + zigbee). The residue should give me a relative clean signal from which decoding of zigbee might be possible. Here is graphic for reference: http://bit.ly/2gZ4Nkk y1 is a received signal which is x1 + x2. + noise. First we demodulate x2 (probably because it is stronger), then re modulate it. Then subtract it from y1 and then decode x1. Regards Sumit On Thu, Nov 2, 2017 at 9:02 PM, Marcus Müller <marcus.muel...@ettus.com> wrote: > Hi Sumit, > > I wrote that but can't remember the context (it seems there was some). > > So, maybe, let's start from scratch. What is it that you want to implement > as a whole that includes Successive Interference Cancellation? What is the > application you're building? > > Best regards, > Marcus > > On 02.11.2017 20:56, Sumit Kumar wrote: > > Hi, > > I was looking for some previous work and I found this link > > https://lists.gnu.org/archive/html/discuss-gnuradio/2016-01/msg00304.html > > where Marcus replied about the difficulty to realize such module in GR. > > I am sorry but I could't understand it properly. > > Can someone elaborate it :) > > I plan to perform SIC on a 802.15.4 waveform which is corrupted by 802.11 > and vice versa. > > Regards > > Sumit > > > _______________________________________________ > Discuss-gnuradio mailing > listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
