Joint Estimation of Carrier Frequency Offset and I/Q Imbalance in the Presence of Time-Varying DC Offset
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概要
- 論文の詳細を見る
Due to the importance of maintaining the orthogonality among subcarriers, the estimation of carrier frequency offset (CFO) is a crucial issue in orthogonal frequency division multiplexing (OFDM) systems. The CFO estimation becomes complicated in OFDM direct-conversion receivers (DCRs), where additional analog impairments such as I/Q imbalance and time-varying DC offset (TV-DCO) exist. In this paper, we propose a novel joint estimation method for CFO and I/Q imbalance in the presence of TV-DCO. By using the linear property of the TV-DCO and employing a periodic pilot sequence, the desired estimates can be obtained in closed-form. Simulation results confirm the validity of the proposed method.
- （社）電子情報通信学会の論文
- 2010-01-01
著者
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YUNUS Umut
Department of Electrical and Information Systems, Osaka Prefecture University
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LIN Hai
Department of Electrical and Information Systems, Osaka Prefecture University
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YAMASHITA Katsumi
Department of Electrical and Information Systems, Osaka Prefecture University
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Yamashita Katsumi
Department Of Electrical And Information Systems Osaka Prefecture University
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Yunus Umut
Department Of Electrical And Information Systems Osaka Prefecture University
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Lin Hai
Department Of Electrical And Information Systems Osaka Prefecture University
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Yamashita Katsumi
Intelligent Information & Communication Laboratory In Department Of Electrical & Electronic
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