Blind estimation of carrier frequency offset, I/Q imbalance and DC offset for OFDM systems
Blind estimation of carrier frequency offset, I/Q imbalance and DC offset for OFDM systems
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OFDM 系统的载波频率偏移、I/Q 不平衡和 DC 偏移的盲估计
DOI:
10.1186/1687-6180-2012-105
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发表时间:
2012-05
影响因子:
1.9
通讯作者:
Li, Hanzhang
中科院分区:
文献类型:
--
作者:
Liu, Tao;Li, Hanzhang
Sensitivity to carrier frequency offset (CFO) is one of the biggest drawbacks of orthogonal frequency division multiplexing (OFDM) system. A lot of CFO estimation algorithms had been studied for compensation of CFO in OFDM system. However, with the adoption of direct-conversion architecture (DCA), which introduces additional impairments such as dc offset (DCO) and in-phase/quadrature (I/Q) imbalance in OFDM system, the established CFO estimation algorithms suffer from performance degradation. In our previous study, we developed a blind CFO, I/Q imbalance and DCO estimation algorithm for OFDM systems with DCA. In this article, we propose an alternative algorithm with reduced computation complexity and better accuracy. Performance of the proposed algorithm is demonstrated by simulations.
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影响因子:
4.4
作者:
Li, Hanzhang;Liu, Tao
通讯作者:
Liu, Tao
DOI:
10.1109/glocom.1999.827597
发表时间:
1999-12
期刊:
Seamless Interconnection for Universal Services. Global Telecommunications Conference. GLOBECOM'99. (Cat. No.99CH37042)
影响因子:
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DOI:
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发表时间:
2008-06
期刊:
annals of telecommunications - annales des télécommunications
影响因子:
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作者:
M. Terré;B. Walke;L. Correia;A. Sibille
通讯作者:
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