Patent ID: 8275320

Claim:
A wireless communication network channel estimation method, said method comprising: measuring pilot signals at a receiver; determining a first portion of said measured pilot signals attributable to a serving transmitter; determining at least one second portion of said measured pilot signals attributable to at least one interfering transmitter; estimating data subcarrier responses of said serving transmitter and said at least one interfering transmitter from said determined first portion and said determined at least one second portion, respectively, said estimating said data subcarrier responses including tracking signal-to-k th -interference ratios (1/S/R k ) from said at least one interfering transmitter, said tracking said signal-to-k th interference ratios (1/SIR k ) including using a minimum mean square error channel estimation which includes solving ∑ k = 2 K ⁢ 1 SIR k ⁢ D k ⁢ R pp ⁢ D k wherein D k is a product of said determined first portion and a k th determined portion of said determined at least one second portion, K is the number of said at least one interfering transmitter plus one, R pp is a correlation matrix between pilot locations, and SNR is a signal-to-noise ratio of said measured pilot signals; and reducing interference from said at least one interfering transmitter on signals from said serving transmitter by utilizing said estimating said data subcarrier responses.