| 基于OFDM技术的电力线通信系统的相位噪声估计与补偿 |
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| 引用本文： | 赵慧冬,黑勇,乔树山.基于OFDM技术的电力线通信系统的相位噪声估计与补偿[J].电视技术,2012,36(17). |
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| 作者姓名： | 赵慧冬 黑勇 乔树山 |
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| 作者单位： | 中国科学院微电子研究所,中国科学院微电子研究所,中国科学院微电子研究所 |
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| 摘 要： | OFDM电力线通信系统对相位噪声非常敏感。由于电力线信道噪声大、衰减强，OFDM信号通过后发生严重失真，基于导频的公共相位误差估计效果变差。提出一种更可靠的相位噪声估计和补偿算法，能够更准确地估计公共相位误差。仿真表明该方法能够有效地抑制相位噪声。
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| 关 键 词： | OFDM 电力线通信 相位噪声 |
| 收稿时间： | 2012/4/10 0:00:00 |
| 修稿时间： | 5/4/2012 12:00:00 AM |
Estimation and Compensation of Phase Noise for OFDM Power Line Communication Systems |
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| Zhao Huidong,Hei Yong and Qiao Shushan.Estimation and Compensation of Phase Noise for OFDM Power Line Communication Systems[J].Tv Engineering,2012,36(17). |
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| Authors: | Zhao Huidong Hei Yong and Qiao Shushan |
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| Institution: | Institute of Microelectronics, Chinese Academy of Sciences,Institute of Microelectronics, Chinese Academy of Sciences,Institute of Microelectronics, Chinese Academy of Sciences |
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| Abstract: | OFDM power line communication (PLC) systems are sensitive to phase noise. Due to the severe impulse noise and strong attenuation of power line channel, OFDM signals are distorted seriously after through the power line. The conventional common phase error (CPE) estimation based on pilots has poor performance in PLC system. This paper proposes an effective common phase noise estimation and compensation algorithm, which can estimate the CPE reliably. Simulations indicate that the proposed algorithm can suppress the phase noise effectively. |
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| Keywords: | OFDM power line communication phase noise |
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