Patent ID: 8908813

Claim:
A method for calculating a coefficient of a time-domain channel estimation filter for use in a Long Term Evolution (LTE) system, comprising: acquiring position information and weight information of symbols carrying reference signal (RS) information corresponding to X 1 , X 2 . . . X P , wherein X 1 , X 2 . . . X P are P frequency-domain channel estimation values of the symbols closest to a currently-input symbol, and P is an integer greater than 0; acquiring position information and weight information of symbols carrying RS information relating to Y 1 , Y 2 , . . . Y Q , wherein Y 1 , Y 2 , . . . Y Q are Q time-domain channel estimation values of the symbols closest to a symbol on which the channel estimation is currently performed, and Q is an integer greater than 0; calculating an autocorrelation matrix of a vector I in accordance with the position information and the weight information, wherein I=[X 1 , X 2 . . . X P , Y 1 , Y 2 , . . . Y Q ]; calculating a crosscorrelation matrix of a vector O and the vector I in accordance with the position information and the weight information, wherein O=[Y 0 ], and Y 0 is a time-domain channel ideal value of the symbol on which the channel estimation is currently performed; and calculating an inverse matrix product of the crosscorrelation matrix and the autocorrelation matrix, thereby obtaining a coefficient vector corresponding to the symbol on which the channel estimation is currently performed.