Encoding apparatus and encoding method of multiple input multiple output communication system

摘要

When precoding information corresponding to data items of respective layers to be transmitted is received from an upper layer, an encoding apparatus of a multiple input multiple output (MIMO) communication system selects a precoding matrix among a plurality of precoding matrices stored in a storage using the precoding information and precodes the data items of the respective layers by simple operations consisting of at least one operation combination of addition, subtraction, selection, and inversion operations in accordance with a kind of the selected precoding matrix and a precoding operation pattern.

主权项

1. An encoding apparatus of a multiple input multiple output (MIMO) communication system, comprising:
a storage for storing a plurality of precoding matrices to correspond to a plurality of address values, respectively; a controller for receiving precoding information corresponding to data items of respective layers from an upper layer, selecting a precoding matrix from the storage based on the precoding information, and analyzing a kind of the selected precoding matrix and a precoding operation pattern; wherein the upper layer determines a transmission mode using a number of transmitting antennas and a number of layers obtained from the selected precoding matrix; an operation selector for selecting one of spatial multiplexing precoding, spatial multiplexing simple precoding, or transmission diversity precoding in accordance with the kind of the selected precoding matrix and the precoding operation pattern; and an operator for precoding the data items of the respective layers in accordance with the selected precoding matrix.