APPARATUS AND METHOD FOR DECODING COMPLEXITY REDUCTION IM CLOSED LOOP MIMO SYSTEM

摘要

PURPOSE: A method for reducing detection complexity in a closed loop multiple antenna system is provided to reduce decoding complexity by dividing the whole streams to a plurality of streams in encoding and decoding. CONSTITUTION: A serial-parallel converter of a transmitter performs a serial-parallel converting process about data stream. A rotation processor divides the whole streams to a plurality of sub-streams. The rotation processor has a rotation angle. The rotation processor rotates a plurality of the sub-streams. The distance between the sub-streams is minimized in a rotation angle. A beam forming performs a beam forming process or a pre-coding process.