Blind carrier frequency offset estimation in OFDM systems with I/Q imbalance

Blind carrier frequency offset estimation in OFDM systems with I/Q imbalance
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具有 I/Q 不平衡的 OFDM 系统中的载波频偏盲估计

DOI:
10.1016/j.sigpro.2009.04.026
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发表时间:
2009-11
期刊:
影响因子:
4.4
通讯作者:
Liu, Tao
Liu, Tao
中科院分区:
工程技术2区
文献类型:
--
作者:
Li, Hanzhang;Liu, Tao

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本文研究了具有I/Q不平衡的正交频分复用(OFDM)系统中载波频率偏移(CFO)的估计。通过利用 I/Q 不平衡引起的镜像频谱,我们提出了一种无需训练序列的盲 CFO 估计新算法。仿真结果表明,所提出的算法优于现有算法,该算法被广泛接受为 OFDM 系统中盲 CFO 估计算法的指南。
In this paper, estimation of carrier frequency offset (CFO) in orthogonal frequency division multiplexing (OFDM) systems with I/Q imbalance is studied. By exploiting the mirror spectrum induced by I/Q imbalance, we proposed a novel algorithm for blind CFO estimation without training sequences. Simulation results show that the proposed algorithm outperforms the existing one, which is well accepted as a guideline of blind CFO estimation algorithms in OFDM systems.
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