Hello,


the 802.11 standard specifies that link quality should be (for DSSS modulation) calculated from the correlation value obtained when code lock is achieved between the local PN code and the incoming PN codes.

In practice however I am convinced that Wi-Fi cards' producers do not calculate it in this way but rather by the percentage of correctly recieved bits or as the difference between signal strength and noise level.

I am currently doing some research on the possibility of using a 802.11 signal in a Wi-Fi LAN for locational purposes and I would like to consider all the information available to estimate a terminal's position. That includes, signal strength, noise level and link quality. However I cannot use link quality if I am not sure of how it is calculated.

Does anyone know how I can find a Wi-Fi card whose vendors specify their method of determining the link quality? Or a card from which I can extract a link quality according to the definition of the standard?