Uplink single-carrier frequency division multiple access system with joint equalisation and carrier frequency offsets compensation

被引：20
作者：
Al-Kamali, F. S. [1 ]
Dessouky, M. I. [1 ]
Sallam, B. M. [1 ]
Shawki, F. [1 ]
Abd El-Samie, F. E. [1 ]
机构：
[1] Menoufia Univ, Dept Elect & Elect Commun, Fac Elect Engn, Menoufia 32952, Egypt
来源：
IET COMMUNICATIONS | 2011年 / 5卷 / 04期
关键词：
INTERFERENCE-CANCELLATION; OFDMA SYSTEMS; FDMA SYSTEMS; SCHEME;
D O I：
10.1049/iet-com.2010.0135
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：
Similar to the orthogonal frequency division multiple access (OFDMA) system, the single-carrier frequency division multiple access (SC-FDMA) system also suffers from frequency mismatches between the transmitter and the receiver. As a result, in this system, the carrier frequency offsets (CFOs) disrupt the orthogonality between subcarriers and give rise to inter-carrier interference (ICI) and multiple access interference (MAI) among users. The authors present a new minimum mean square error (MMSE) equaliser, which jointly performs equalisation and carrier frequency offsets (CFOs) compensation. The mathematical expression of this equaliser has been derived taking into account the MAI and the channel noise. A low complexity implementation of the proposed equalisation scheme using a banded matrix approximation is presented here. From the obtained simulation results, the proposed equalisation scheme is able to enhance the performance of the SC-FDMA system, even in the presence of estimation errors.
引用
收藏
页码：425 / 433
页数：9
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