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UWB position location

Started by jask...@yahoo.com September 19, 2006
Dear Friends!!

In these days i'm doing research on UWB indoor position location..and I'm new in this field so I need your help:

I assumed enviroment with 3 BSs (Base station) and one mobile in Line Of Sight, I know position of all 3 BSs and I have to calculate Mobile's position. I used 1st derivative Gaussian monocycle with 0.5nsec duration, and sampling rate is 20 GHz.

In my simulation, 1st I calculate distance between each BS and the mobile than added Gaussian distributed random variables in order to add some errors, than I estimated mobile's position.

Question :
1. Is it true that I added Gaussian distributed random variables in order to add some errors in channel ?
2. Is there anyone who used IEEE 802.15.4a channel model ? How to add this channel model to simulations ? I have big problem with it...I also downloaded MatLab code for channel from IEEE 802.15.4 Home page.

Thank you very much !!! I need any help from you.^^)

With best regards Jasurbek.