Based on combining the generalized likelihood ratio test (GLRT) with antenna selection(AS)

the paper presents a non-coherent antenna selection (NON-AS) algorithm over flat Rayleigh fading channel

which do not require channel state information (CSI) for antenna selection and signal detection.The NON-AS algorithm can be applied to receiver of multiple input and multiple output(MIMO) systems

and selection of receive antennas is based on the Frobenius-2 norm of instantaneous received signal vector.Compared with coherent antenna selection

the NON-AS algorithm do not require estimating channel state information

which greatly reduce system complexity.The pair-wise error probability analysis and simulation results show that

under the condition of high SNR

by selecting the set of antennas that observe the largest instantaneous Frobenius-2 norm of received signal vector

the same diversity gain can be achieved as the one obtained by using all the receive antennas.