Low-complexity CFO compensation technique for interleaved OFDMA system uplink

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• 作者：Javad Mohammadi-Siahboomi^a ; Mohammad Javad Omidi^a ; Hamid Saeedi-Sourck^b ; ^{saeedi@yazd.ac.ir" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Carrier frequency offset ; Orthogonal frequency division multiple access ; Parallel interference canceller ; Signal-to-interference ratio
• 刊名：AEU - International Journal of Electronics and Communications
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：70
• 期：5
• 页码：718-726
• 全文大小：954 K

文摘

Carrier frequency offset (CFO) is a challenging problem in the uplink of orthogonal frequency division multiple access (OFDMA). In this paper, we present a new CFO compensation technique for interleaved OFMA uplink. The received signal for each user is corrected by the CFO composed of CFO values from two adjacent users and then the residual interference is cancelled by the parallel interference canceller (PIC) algorithm. In the following we analyze the performance of the proposed method and derive a signal-to-interference (SIR) expression. Finally, simulation results show acceptable performance of the proposed method in comparison with some conventional techniques with lower complexity.