Patent ID: 7720181

Claim:
An Iterative Detection and Decoding (IDD) receiving apparatus in a Multiple Input Multiple Output (MIMO) communication system, the apparatus comprising: a MIMO detector which generates soft decision values of coded bits by MIMO-decoding a receive vector, feedback priori information, and a list of candidate coded symbol vectors; a decoder which Soft-Input/Soft-Output (SISO)-decodes values derived from the soft decision values generated at the MIMO detector and feeds back soft decision values of the coded bits to generate an input for the MIMO detector; a hard decision part which generates a coded symbol vector by performing a hard decision on the soft decision values generated at the decoder; and a list updater which generates a list of candidate coded symbol vectors using the receive vector and provides the list to the MIMO detector at a first iteration, updates the list using the coded symbol vector fed from the hard decision part, and provides the updated list to the MIMO detector at subsequent iterations.