Patent ID: 8265204

Claim:
A decoding device comprising: a demultiplexer for demultiplexing a received signal including a pilot and a data symbol, and outputting the pilot and the data symbol; a channel estimator for receiving the pilot from the demultiplexer, estimating a channel of the received signal, and outputting a channel matrix; and a multi-input multi-output (MIMO) decoder for outputting a received signal vector from the data symbol provided by the demultiplexer, and generating a soft decision value based on the received signal vector, and wherein the MIMO decoder includes a linear process module for outputting the received signal vector from the data symbol that is output by the demultiplexer by using a poly-diagonalized matrix corresponding to the channel matrix estimated by the channel estimator, and a decoding module for generating the soft decision value for the data symbol by using the received signal vector, wherein the generating of the soft decision value is by using a first received signal vector, a coefficient value, and a variance value of effective noise calculated based on the poly-diagonalized matrix and the received signal vector.