Patent ID: 8553822

Claim:
A method of estimating a channel in a wireless communication system, the method comprising: obtaining, by a processor, at least two groups of received pilot symbols for at least two sets of pilot subbands, one group of said received pilot symbols for each set of pilot subbands, wherein the second group is staggered with respect to the first group; dividing said received pilot symbols into even symbols and odd symbols, wherein the even symbols include actual and excess components and the odd symbols include actual and excess components; determining an even effective estimate and an odd effective estimate based on the even symbols and the odd symbols, respectively; selecting a first set of time-filter coefficients for estimating an actual channel; selecting a second set of time-filter coefficients for estimating an excess channel; estimating said actual channel based on at least the even effective estimate, the odd effective estimate, the first set of time-filter coefficients and the second set of time-filter coefficients; and estimating said excess channel based on at least the even effective estimate, the odd effective estimate, the first set of time-filter coefficients and the second set of time-filter coefficients, wherein said actual components include channel taps at or within a prefix length, and excess components include channel taps outside of the prefix length.