Patent ID: 8130875

Claim:
A method comprising: in a wireless receiver of a wireless station, receiving a transmission comprising a first subcarrier, a second subcarrier and a third subcarrier, wherein the first, second and third subcarriers are configured to carry either data signals or pilot signals at time instances; estimating a channel response of the second subcarrier carrying a pilot signal at one time instance; estimating a channel response of the third subcarrier carrying a pilot signal at another time instance; estimating a channel response of the first subcarrier carrying a pilot signal at one of a plurality of pseudo time instances using the channel response of the second subcarrier at the one time instance and the channel response of the third subcarrier at the other time instance, wherein the one of the plurality of pseudo time instances represents a time between a time instance of the second subcarrier and a time instance of the third subcarrier; estimating a channel response rate of change using the estimated channel response of the first subcarrier at the one of the plurality of pseudo time instances and the estimated channel response of the second subcarrier; and estimating a channel response of the first subcarrier carrying a data signal at one time instance using a channel response of the first subcarrier carrying a pilot signal at another time instance and the channel response rate of change.