| 摘要 |
<p>The present invention relates to a method for detecting a signal by using channel state information in a MIMO-OFDM system, and an apparatus for the same. According to the present invention, the method for detecting a signal by using channel state information in a MIMO-OFDM system comprises the steps of: receiving a signal from a transmission terminal having multiple antennas by an L-QAM method; calculating a pseudo-inverse matrix for a transmission channel of a reception signal, and a channel power value for each column of the pseudo-inverse matrix; normalizing the calculated channel power values, individually; adaptively extracting a M_(adaptive) (1<=M<=L) value, which is the number of candidate symbols for a QRD-M scheme, for each column by using each value obtained by multiplying the L to the normalized channel power values; and detecting the reception signal by independently applying the M_(adaptive) value extracted for each column, by each signal detection step of the QRD-M scheme corresponding to each column. According to the present invention, the number of candidate symbols to be used for the QRD-M detection scheme is adaptively adjusted according to the state of a channel, thereby maintaining performance of an existing QRD-M scheme and simplifying the signal detection.</p> |
