Patent ID: 7352794

Claim:
A method for utilizing a single configurable finite impulse response (FIR) filter for use in a single user detector in a code division multiple access (CDMA) multi-path system, comprising: providing a single finite impulse response (FIR) filter; configuring the FIR filter to derive at least a first, then a second, then a third, then a fourth of the following parameters for single user detection: auto correlation function R, X value representative of the complex conjugate of a channel impulse response multiplied and summed with time shifted versions of a received signal, back substitution value Y determined from a first set of linear equations, wherein the back substitution value Y is a function of the auto correlation function R, the X value, and a Cholesky decomposition value L, and back substitution value S determined from a second set of linear equations, wherein the back substitution value S is a function of the auto correlation function R, the X value, the back substitution value Y, and the L value; and using the auto correlation function R, the X value, the back substitution value Y, and the back substitution value S in the single user detector to recover single user data transmitted from a transmitter.