A HYBRID DETECTION METHOD FOR MULTIPLE INPUT MULTIPLE OUTPUT SYSTEMS

A hybrid detection method for various MIMO systems is provided to reduce the frequency of average multiplication significantly when a SNR(Signal to Noise Ratio) is high, thereby reducing complexity compared to an ML detector and implementing performance nearly as much as the ML detector. A hybrid detection method for various MIMO(Multiple Input Multiple Output) systems comprises the following steps of: estimating a signal transmitted by using a ZF(Zero Forcing) detector; searching for a transmitted signal on the basis of ML(Maximum Likelihood) detection in a constellation neighboring a first estimated symbol; and determining a signal as final output if the estimated signal and the searched signal are identical, and if not, increasing the constellation with the rest of signals to proceed the second stage.