Carrier frequency offset compensation with successive cancellation in uplink OFDMA systems

被引：39
|
作者：
Yucek, Tevfik [1 ]
Arslan, Huseyin [1 ]
机构：
[1] Univ S Florida, Dept Elect Engn, Tampa, FL 33613 USA
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2007年 / 6卷 / 10期
关键词：
OFDMA; frequency offset; successive cancellation;
D O I：
10.1109/TWC.2007.060273
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 OFDM systems, OFDMA systems also suffer from frequency mismatches. between the receiver and the transmitter. However, the fact that each uplink user has a different frequency offset makes the compensation more challenging than that of OFDM systems. This letter proposes successive, interference cancellation (SIC) for compensating the frequency offset in the uplink OFDMA systems. A decorrelator is used to remove the inter-carrier interference (ICI) within a user's signal and successive cancellation is applied to mitigate the multi access interference (MAI) arising due to the frequency difference among uplink users. The proposed algorithm is shown to eliminate the interference and has a manageable complexity.
引用
收藏
页码：3546 / 3551
页数：6
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