Nahal W.E.Communication and Electronics DepartmentFaculty of EngineeringMSA UniversityEgypt2020-01-252020-01-252012https://doi.org/10.1109/ICENCO.2012.6487092https://ieeexplore.ieee.org/document/6487092ScopusIn this paper we will propose a new blind variable step-size method which is mainly based upon the exponentially weighted step-size method to enhance the performance of the recursive versions of the CMA and the CC-CMA algorithms in multi-user applications. The proposed method presents a new method which detects blindly the channel impulse response variation according to the ever-changing environmental conditions, and then uses this variation to adjust the step-size parameter that attenuates this variation by the exponential ratio at each iteration of the adaptive blind equalization algorithm. As a result we will gain a step-size parameter sufficient for updating the tap weight coefficient vector of the blind equalizer iteratively, and that will speed up the convergence rate, minimize the mean square error (MSE) and enhance the performance of the blind detectors for DS-CDMA systems. � 2012 IEEE.EnglishBlind EqualizationCode-division multiple-access (CDMA)multiuser detectionBlind equalizationImpulse responseIterative methodsMean square errorMobile radio systemsMultiuser detectionAdaptive blind equalization algorithmsChannel impulse responseCode division multiple access (CDMA)Environmental conditionsMean Square Error (MSE)Multi-user applicationsMulti-User DetectorsVariable step size methodsCode division multiple accessConference Paperhttps://doi.org/10.1109/ICENCO.2012.6487092