Method and apparatus for guiding a channel impulse response estimate for the wireless channel

摘要

PROBLEM TO BE SOLVED: To provide a method for deriving a channel impulse response estimate (CIRE) with improved quality.;SOLUTION: A first CIRE with multiple channel taps is obtained based on (1) an initial CIRE derived from a received pilot or (2) a filtered CIRE derived from the initial CIRE. The channel taps in the first CIRE are scaled with multiple scaling factors to obtain a second CIRE. For point-wise LMMSE scaling, the energy of each channel tap is estimated. The noise energy for the channel taps is also estimated, e.g., based on energies of channel taps on one or both edges of the first CIRE. Each channel tap is scaled based on a scaling factor determined by the energy of that channel tap and the noise energy.;COPYRIGHT: (C)2012,JPO&INPIT