Patent ID: RE44219

Claim:
An adaptive receiving MIMO (multi input and multi output) system for transmitting and receiving transmit and receive symbol vectors through channels between multiple transmit and receive antennas, comprising: a linear equalizer for canceling interference added when passed through the channel from the receive symbol vectors and extracting transmit symbol vectors by performing an initial detection; a plurality of parallel decision feedback equalizers for canceling signal interference from the signals detected by the linear equalizer and the receive symbol vectors according to a filter tap coefficient and a symbol detecting order updated for each predetermined period, and detecting the transmit symbol vectors, wherein a cross correlation vector is obtained by crossing a first value and a second value to define a cross correlation matrix, the first value obtained when the receive symbol vector is passed through the feedforward filter, and the second value obtained when the detected signal is fed back through the feedback filter; and an adaptive block for deciding the symbol detecting orders of the linear equalizer and the parallel decision feedback equalizers, and updating the filter tap coefficients based on the RLS (recursive least square) algorithm according to the decided symbol detecting orders.