Method and apparatus for performing channel equalization on a MIMO signal

A method of performing channel equalization on a wireless signal, comprising:

• (i) receiving a wireless signal at a wireless receiver system;
• (ii) formulating, at a processor in the wireless receiver system, an equalizer associated with sub-carriers of the wireless signal, wherein the equalizer is a function of a quantity relating to signal quality;
• (iii) determining, at a processor in the wireless receiver system, an adjoint of the equalizer over a selected number of the subcarriers, wherein the adjoint is a transpose of a cofactor matrix of an equalization matrix;
• (iv) interpolating, at a processor in the wireless receiver system, the adjoint determined in (iii) to obtain an adjoint of the equalizer over remaining ones of the subcarriers of the wireless signal;
• and
• (v) generating, at a processor in the wireless receiver system, an equalized signal for each of the subcarriers using the adjoint of the equalizer over the selected number of subcarriers and the interpolated adjoint over the remaining ones of the subcarriers.