MIMO decoding method and apparatus thereof

摘要

The present invention relates to a decoding method in a receiver for a mobile MIMO communication system, said MIMO communication system comprising a hybrid automatic retransmission request scheme, the method comprising the steps of: receiving first and second soft-information values of a first and a second codeword on a first time interval; storing said first and second soft-information values on a first and a second buffer; initiating a first decoding of said first codeword by adding said first soft-information values plus first previous soft-information values, wherein said first previous soft-information values are stored on a first additional buffer; and initiating a second decoding of said second codeword by adding said second soft-information values plus second previous soft-information values, wherein said second previous soft-information values are stored on said second additional buffer; obtaining first recalculated soft-information values by subtracting a first portion of a received signal from said received signal, wherein said first portion is of said second soft-information values; initiating a third decoding of said first codeword by adding said first recalculated soft-information values plus said first previous soft-information values, if said decoding of said first codeword fails and said decoding of said second codeword succeeds.