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This paper proposed a dynamic channel allocation method for MIMO-OFDMA system, which can be applied for both uplink and downlink. The SNR on each subcarrier linking from a BS to all active MSs is estimated by ZF and MMSE approach. Only subcarriers having maximum SNR are selected for the corresponding communication link. The proposed algorithm is investigated for different system parameters and the channel conditions. Numerical results show that the system performance can be significantly improved by applying the proposed technique. Keyword: MIMO-OFDMA, DCA (Dynamic Channel Allocation), ZF (Zero Forcing), MMSE (Minimum Mean Square Error)

Proposal of A Dynamic Channel Allocation Method for MIMO-OFDMA System