Patent ID: 8139683

Claim:
A method for channel estimation, the method comprises: calculating at least one initial channel estimate; calculating an estimate of the channel based upon a mathematical relationship between a first group of pilot subcarriers and a second group of pilot subcarriers, wherein the first group of pilot subcarriers and the second group of pilot subcarriers are both received groups of pilot subcarriers, and at least one pilot subcarrier of the first group of pilot subcarriers and at least one pilot subcarrier of the second group of pilot subcarriers are included in a subcarrier tile; and determining a size of an error window based on a number of pilot subcarriers allocated to a user, wherein the error window includes estimated locations of multiple taps of a time impulse response; wherein a difference between locations of pilot subcarriers of the first group and locations of corresponding pilot subcarriers of the second group is substantially constant; and wherein pilot subcarriers that belong to the same group of subcarriers are non-evenly spaced in a frequency domain.