Regularized MIMO Equalization for SC-FDMA Systems |
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| Authors: | F. S. Al-kamali M. I. Dessouky B. M. Sallam F. Shawki F. E. Abd?El-Samie |
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| Affiliation: | 1. Department of Electronics and Electrical Communications, Faculty of Electronic Engineering, Menoufia University, Menouf, 32952, Egypt
2. Department of Electrical Engineering, Faculty of Engineering, Rabigh, King Abdullaziz University (KAU), Rabigh, 21911, Saudi Arabia
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| Abstract: | In this paper, we propose an efficient frequency domain equalization scheme for Multiple Input Multiple Output (MIMO) Single-Carrier Frequency-Division Multiple Access (SC-FDMA) systems. The proposed scheme avoids the complexity problem associated with the conventional MIMO Zero-Forcing (ZF) equalizer as well as the noise enhancement problem. The matrix inversion process associated with the proposed equalization scheme is performed in two steps to reduce complexity. A regularization term is added in the second step of the matrix inversion to avoid the noise enhancement. Simulation experiments on uplink MIMO SC-FDMA systems show that the proposed equalization scheme provides better performance than that of the ZF equalizer and its complexity is far less than that of the ZF equalizer. |
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