Patent Document ID: 8208587
Application ID: 12106188
Patent Flag: 1

Claim One:
1. A serial interference cancellation space alternating generalization expectation (SIC-SAGE) method for jointly estimating parameters of a multipath channel impulse response (CIR) based upon a signal received in a multipath environment, comprising: arranging paths in the multipath CIR according to received powers in the signal to provide a path iteration order for the arranged paths; determining an optimum signal bandwidth; iterating until convergence according to the path iteration order: (a) an expectation step that estimates delay, phase, and amplitude for each component in the multipath CIR; and (b) a maximization step that maximizes the value of a cost function to revise the delay, phase, and amplitude estimates, wherein the cost function includes a frequency correlation component and a delay correlation component, and wherein the frequency correlation is calculated by multiplying the delay correlation with a conjugate of a steering vector and summing over the optimum signal bandwidth.