APPARATUS AND METHOD FOR SEQUENCE ESTIMATION USING MULTIPLE-INPUT MULTIPLE -OUTPUT FILTERING

摘要

An apparatus for providing an estimate of a transmit sequence from a receive sequence has a processor (101) for processing the receive sequence to obtain a permuted filtered sequence, wherein the processor (101) is operative for processing the receive sequence using channel information and permutation information. The apparatus further comprises means (109) for providing information on an estimation error associated with the estimate of the transmit sequence, means (111) for calculating the permutation information using the estimation error, wherein the means (111) for calculating is operative for calculating the permutation information such that the permuted filtered sequence values are in such an order that estimation error values associated with the values of the estimate of the transmit sequence are in a predetermined order, and an interference canceller (107) for reducing interferences by performing a subtraction operation using the permuted filtered sequence to provide the estimate of the transmit sequence. The inventive estimation scheme simultaneously reduces complexity and an estimation error.