A DETAILED STUDY OF VARIABLE STEP SIZE CONSTANT MODULUS ALGORITHM WITH LMS UPDATE

In this manuscript, Variable Step Size Constant Modulus Algorithm with LMS update has been investigated. A combined benefit of non-blind and blind algorithm is investigated and achieved. Simulation results comparing convergence rate of VSS CMA with LMS, CMA, MMA, RLS-CMA have been depicted for QAM reception. Complex variable channel has been considered for all simulation. Convergence rate is simulated for 16-QAM. Abbreviations: LMS, Least Mean Square; CMA, Constant Modulus Algorithm; RLS, Recursive Least Square; RLS-CMA, Recursive Least Square- Constant Modulus Algorithm; VSS CMA, Variable Step Size Constant Modulus Algorithm; MSE, Mean Square Error; EMSE, Excess Mean Square Error; SDG, Stochastic Gradient Descent; QAM, Quadrature Amplitude Modulation; ZF, Zero-forcing.