Patent ID: 7630429

Claim:
An apparatus for generating a coefficient for an equalizer, the apparatus comprising a receiver and a processing arrangement capable of solving a least squares problem for determining the equalizer coefficient using a received signal corresponding to at least one predetermined symbol sequence, the at least one predetermined symbol sequence and a predetermined spreading code associated with the at least one predetermined symbol sequence, wherein the least squares problem is an underdetermined least squares problem, and the processing arrangement employs a minimum-norm solution to the signal received by the receiver to determine the equalizer coefficient, the minimum-norm solution being: f =Y H C ( C H YY H C ) −1 p , where f is the plurality of equalizer coefficients, (C H YY H C) −1 is an inverse of a correlation matrix, C H is a Hermitian matrix of the predetermined spreading code, and Y is a Toeplitz convolution matrix based upon a vector of received chips, Y , corresponding to the at least one predetermined symbol sequence, P .