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In this paper; the variants of the much celebrated multimodulus algorithm (MMA) are presented for the blind equalization of higher order QAM signals. In this course, new error functions associated with the existing MMA are proposed to decrease time to convergence (TTC) by bringing the zero error equalization points closer to the final symbol level in the transmitted constellation. The convergence...
In this paper; the variant of the much celebrated multimodulus algorithm (MMA) is presented for the blind equalization of QAM signals to achieve better performance at high transmission rate. In this course, a new error function is proposed by introducing additional nulls in the existing MMA error function at specific locations which enables the new scheme to achieve low steady state mean squared error...
A modified version of adaptively varying modulus algorithm (AVMA) is presented: the dual mode adaptively varying modulus algorithm (DM/AVMA), which accomplishes blind equalization and carrier phase recovery simultaneously in case of distorted channels. The DM/AVMA first acts a standard MCMA and once the convergence to certain level is achieved, the AVMA comes into action to acquire the signal constellation...
The blind adaptive equalization and identification of communication channels is an important theoretical and practical problem which attracts much attention in recent years. Due to its robustness and easy implementation, constant modulus algorithm (CMA) is an excellent choice to correct the distortions caused by transmission channels. In two dimensional communication systems, however, phase recovery...
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