Apparatus and method for estimating transmitted signal

Abstract

A receiver having a low computation complexity so as to estimate a transmitted includes a likelihood function calculator calculating likelihoods of transmittable signals using a currently received signal, at least one previously received signal, and an estimated signal corresponding to the at least one previously received signal; and a maximum value output unit outputting a transmittable signal corresponding to a likelihood function of the likelihood functions having a maximum value. Thus, a currently received signal can be estimated using a previously received signal, a previously estimated signal, and the currently received signal. As a result, the reliability of the estimated signal can be improved. Also, the previously estimated signal can be stored to prevent the complexity of a computation from being increased.

Dependencies are inferred from the claim text.