Patent ID: 7929622

Claim:
A method of channel estimation applied to a communication system having signals transmitted via a plurality of pilot and non-pilot sub-channels, the method comprising: respectively receiving pilot symbols by a receiver of the communication system from a first time duration to a second time duration and accordingly obtaining a first channel response and a second channel response for each of a first portion of the pilot sub-channels during the first time duration and the second time duration and obtaining at least three channel responses for each of a second portion of the pilot sub-channels from the first time duration to the second time duration, wherein the first time duration is not consecutive to the second time duration; averaging the first and the second channel responses of each of the first portion of the pilot sub-channels by the communication system to obtain an estimated channel response of each of the first portion of the pilot sub-channels; averaging a last two channel responses of the at least three channel responses of each of the second portion of the pilot sub-channels by the communication system to obtain an estimated channel response of each of the second portion of the pilot sub-channels; and performing an interpolation on the estimated channel responses of the first and the second portions of the pilot sub-channels by the communication system to obtain an estimated channel response of each non-pilot sub-channel.