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In this paper, we proposed a modified ML detector for generalized spatial modulation which is a method among Multiple-input Multiple-output. This proposed method detects signal applying modified channel statement information based on priority. Complexity in conventional methods increases as increasing the number of active antennas. To solve this problem, we proposed a new ML method using static channel information decided by the number of transmit antennas and the number of receive antennas. This method detects active antennas one by one through priority. The proposed method has proved benefit on complexity compared with conventional method through simulations. When the number of transmit antennas is equal to 10, there is approximately 45% complexity reduction. ※   2016 ()      (No. 2015R1D1A1A01061075) First Author : Department of IT Convergence Engineering, Kumoh National Institute of Technology, lmh910420@gmail.com,  ° Corresponding Author : Kumoh National Institute of Technology, wdragon@kumoh.ac.kr,  :KICS2016-12-385, Received December 14, 2016; Revised January 11, 2017; Accepted January 24, 2017 I.        Internet of Things (IoT)         ,                  . [1]            Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A)   4 (4th Generation, 4G)    .  4G        The Journal of Korean Institute of Communications and Information Sciences '17-04 Vol.42 No.04 732      Multiple-input Multiple-output (MIMO)     sub-channel   Orthogonal Frequency Division Multiplexing (OFDM) .         . [2]            MIMO   .  MIMO     Bit Error Rate (BER)       ,                     BER    . [3]                .      Spatial Modulation (SM) . [4] SM        ,                      . [4]        Radio Frequency (RF)     .     (Spectral Efficiency ,SE)        (Energy Efficiency, EE)   . SM           .         2    ,                    Generalized Spatial Modulation (GSM) . GSM                      . [6]   Zero Forcing (ZF), Minimum Mean Square Error (MMSE), Maximum Likelihood (ML)             . [7] ZF      Intersymbol Interference (ISI)         ML           ML     . MMSE                     ,       .          ML . [8] GSM  ML              ,                   .    GSM ML        .   ML   MIMO             ,          .      GSM ML       .                  .            .       ML     .  BER      .   ML          GSM        .   II    GSM  ML    III  GSM     ML   .  IV    V  .

A Low-Complexity ML Detector for Generalized Spatial Modulation Based on Priority