Regularized MIMO Equalization for SC-FDMA Systems

被引：7
|
作者：
Al-kamali, F. S. [1 ]
Dessouky, M. I. [1 ]
Sallam, B. M. [1 ]
Shawki, F. [2 ]
Abd El-Samie, F. E. [1 ]
机构：
[1] Menoufia Univ, Fac Elect Engn, Dept Elect & Elect Commun, Menoufia 32952, Egypt
[2] King Abdullaziz Univ KAU, Fac Engn, Dept Elect Engn, Rabigh 21911, Saudi Arabia
来源：
CIRCUITS SYSTEMS AND SIGNAL PROCESSING | 2012年 / 31卷 / 04期
关键词：
MIMO SC-FDMA; Regularized equalization; ZF equalization; SINGLE-CARRIER FDMA; FREQUENCY-DOMAIN EQUALIZATION; REDUCTION;
D O I：
10.1007/s00034-011-9382-x
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：1423 / 1441
页数：19
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