Patent ID: 7764753

Claim:
An apparatus for adaptive wireless channel estimation, applicable to a moving vehicle time-variant environment, said apparatus comprising: an adaptive controller, for performing an adaptive analysis when receiving a packet, and computing a first recursive parameter, a second recursive parameter, and an interpolation number; a pilot-aided channel tracking module receiving said first recursive parameter and said interpolation number from said adaptive controller, for estimating pilot-aided channel information and performing an interpolation to obtain updated channel information based on the estimated pilot-aided channel information, feedback channel estimation information of previous time and said interpolation number, and for adjusting an optimal channel information through said first recursive parameter; and a decision feedback channel tracking unit receiving said second recursive parameter from said adaptive controller and sending said feedback channel estimation information of previous time to said pilot-aided channel tracking module, for performing decision feedback on a compensated information symbol, for performing channel tracking based on said second recursive parameter, for iteratively updating said feedback channel estimation information of previous time, and for providing iteratively updated channel estimation information to a next information symbol.