BLINDCHANNEL ESTIMATIONFOR MC-CDMA WITH TIMEOFFSET

Thispaperproposes a newblindchannel estimation schemefortheuplink ofasynchronous MC-CDMA systems. Mostofexisting channel estimations, whichare assumed toworkinperfectly synchronization cannot be extended totheasynchronous system withtimeoffset (TO). Ournewscheme, however, canworkfornotonly perfectly synchronized MC-CDMA system butalsothe asynchronous system withTO.Besides, this blind channel estimation canattain theoptimal estimation inminimum meansquareerror(MMSE)senseby appropriately designing spreading codes, andshowan improved performance insimulation.