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Published 20 hours ago • verified publisher icon dhalperi

Averaging CSI?

Open smsam75 opened this issue 6 years ago • 3 comments

Hi,

I'm using CSItool for positioning and I need to reduce the dimension of collected CSI for each point. Currently, I have 500 packets each including 3x3x30 CSI (3 Tx and 3 Rx and 30 subcarriers). Is it a good idea to take the average the collected CSI from 3 transmitters of the access point?

Thanks, Mohsen

smsam75 avatar Aug 24 '18 23:08 smsam75

what router are you using? if you want to have a 1 by 3 or 2 by 3 CSI you should either buy a router with 1 or 2 transmitting antennas. or you should fix the transmission rate of your current router [if supported by the firmware] to use 1 only transmitting antenna. you should choose a rate according to the 80211n MCS table.

AliAwad1994 avatar Sep 30 '18 09:09 AliAwad1994

Hi Mohsen, No you shouldn't average across all Tx-Rx streams. As the channel response across each stream is quite different.

tahmidzbr avatar Dec 04 '18 23:12 tahmidzbr

Hi Mohsen, No you shouldn't average across all Tx-Rx streams. As the channel response across each stream is quite different.

Thanks Tahmid.

smsam75 avatar May 06 '19 00:05 smsam75