Need information about spread spectrum systems in satellites

[samira]

hi i need some information bout spread spectrum systems in satellite.i know about SS and DSSS and FHss but i need details about thiese systems in satellites. and allittle information about the companies which work about it.
thx

 

[behy]

Re: please help me

in DSSS Direct Sequence Spread Specrum a PN code with high bite rate is used to spread the data stream. in this case the data power spread in a wide freq. band. so its detection for non outhorizeds are imposible, is noise protected and ...

 

[shiv_emf]

please help me

pls point me to spread spectrum concept...
where can i find detailed information
thanks
Shiv