1. A system, comprising: a high-rate linear Minimum Mean Square Error (MMSE) detector having a detection window, and producing outputs every high-rate detection interval, to generate at least one actual high-rate output based upon decoding an input signal that includes actual high-rate users and low-rate users, the at least one actual high-rate output corresponding to one of the actual high-rate users, the high-rate users having a higher user rate than the low-rate users.