Lattice aided detection method and apparatus with soft output in MIMO system

摘要

transmitted symbol detection method using a lattice reduction matrix in a MIMO system and an apparatus is disclosed. Method for detecting a transmission symbol using lattice reduction matrix (lattice-reduction matrix) in a system with multiple antennas according to the present invention comprises the steps of recovering the original transmitted symbol from a received signal received via the multiple antennas; And because of the noise component included in the received signal in the insertion of the lattice reduction matrix obtained on the modified cone sterling illustration, according to the state of the transmit symbols for the noise component in order to perform conditional exchange between the components the recovered by processing with the transmission symbol is characterized in that it comprises the step of providing a soft output. Thereby it is possible to generate a soft output can be obtained a performance gain of the channel decoding.