I am just starting to study what channel estimation is for and how to use it? My thesis title is " design and implementation of channel and timing estimation for uwb and gps".
Ramza,
first study the UWB channels characterisics (dopler, paths, modulation..)and gps. get an idea of channel estimation reading this paper for example: https://cache.freescale.com/files/dsp/doc/app_note/AN3059.pdf . when u then come up with a specific design you may ask specific questions, cos you're question is not easy to answer, at least for me!!