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A Dual-Mode Algorithm for CMA Blind Equalizer of Asymmetric QAM Signal

Mohammad ST Badran

Blind equalization used to over comes inter symbol interference. A dual mode DM blind equalization technique for adaptive channel equalization of asymmetric constellation AC of QAM is introduced. DM algorithm has been proposed as a solution to the problem of slow convergence of blind equalization algorithm, such as Constant Modulus Algorithm. The adaptation of dual mode equalizer by changing from the standard algorithm to the dual mode algorithm depending on the error level. In this paper the proposed technique is applied to a 16 QAM. M Computer simulations have been performed to verify the performance of the proposed method dominates the conventional equalizers.