Patent ID: 8483159

Claim:
A method of frequency offset compensation, comprising: estimating a frequency offset of each terminal in a plurality of terminals according to pilots in uplink signals of a terminal; grouping the terminals according to the frequency offset of each terminal by allocating the terminals that can use a same frequency offset compensation value for compensation into a same group; scheduling the terminals in different groups to enable the terminals in different groups to occupy time frequency resources in different time segments; and performing compensation for the frequency offset of the terminals in each group with frequency offset compensation value corresponding to each group, wherein the estimating the frequency offset of each terminal comprises: obtaining an auto-correlation estimation of the terminal according to an auto-correlation value of the pilots, and obtaining the frequency offset of the terminal according to the auto-correlation estimation; obtaining an auto-correlation estimation of the terminal according to an auto-correlation value of the pilots, filtering the auto-correlation estimation with an Infinite Impulse Response (IIR) filter, and obtaining the frequency offset of the terminal according to the filtered auto-correlation estimation.