Section Explaination - Githubissues

bastibl / gr-ieee802-11

IEEE 802.11 a/g/p Transceiver

https://wime-project.net/

GNU General Public License v3.0

731 stars 286 forks source link

Section Explaination #370

Closed thayheng closed 1 year ago

thayheng commented 1 year ago

Dear Sir, I am quite new on DSP as well as gnu radio and, I am hoping you could help with some explanation of this part of gr_wifi_receiver. I am not sure if these part include 3 main things as 1. de-noising 2. time-recovery (clock sync) 3. channel equalization (multi-path effect). If so, where does these processes take place in the receiver?

bastibl commented 1 year ago

Not sure what exactly you mean with de-noising, but

the frequency offset if estimated and compensated in sync long and sync short
the time alignment of the frame is estimated in sync long (and cyclic prefix is removed)
multi-path effects are compensated in the frame equalizer

thayheng commented 1 year ago

Thank you sir for your response! For de-noising, I refer to filtering process for should there be any noise in the signal.

bastibl commented 1 year ago

We don't do de-noising. I'm not sure what you had in mind specifically. But since the signal is not oversampled, there is no channel filtering or something like that.

thayheng commented 1 year ago

Ah, I see. Thank you sir.