Patent ID: 8724746

Claim:
A method for processing information, the method comprising: operating in a first phase, wherein the first phase comprises iteratively inverting a first filtering operation on received signals; operating in a second phase, wherein the second phase comprises iteratively inverting a second filtering operation on the received signals with consideration given to a first estimation error of symbols of a first user and a second estimation error of symbols of a second user, the second filtering operation being different from the first filtering operation; extracting detected information from the first filtered received signals and the second filtered received signals; and processing the detected information using a processing unit, wherein iteratively inverting a second filtering operation comprises iteratively inverting (σ 1 2 {tilde over (H)} 1 +{tilde over (H)} 2 +σ 2 I) −1 , where {tilde over (H)} 1 is a channel from the first user, {tilde over (H)} 2 is a channel from the second user, σ 2 is an estimation error of symbols, and σ 1 2 is an estimation error of symbols of the first user.