| Zhang Jie (张杰),Yang Ruizhe,Si Pengbo,Zhang Yanhua,Yu Richard.[J].高技术通讯(英文),2014,20(4):415~420 |
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| Error propagation determined iterative channel estimation with ICI mitigation for fast time-varying OFDM channels |
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| DOI：10.3772/j.issn.1006-6748.2014.04.012 |
| 中文关键词: |
| 英文关键词: orthogonal frequency division multiplexing (OFDM), channel estimation, intersubcarrier interference (ICI), error propagation, Kalman |
| 基金项目: |
| Author Name | Affiliation | | Zhang Jie (张杰) | | | Yang Ruizhe | | | Si Pengbo | | | Zhang Yanhua | | | Yu Richard | |
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| 中文摘要: |
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| 英文摘要: |
| The intersubcarrier interference (ICI) degrades the performance of the pilot-aided channel estimation in fast time-varying orthogonal frequency division multiplexing (OFDM) systems. To solve the error propagation in joint channel estimation and data detection due to this ICI, a scheme of error propagation determined iterative estimation is proposed, where in the first iteration, Kalman filter based on signal to interference and noise is designed with ICI transformed to be part of the noise, and for the later iterations, a determined iterative estimation algorithm obtains an optimal output from all iterations using the iterative updating strategy. Simulation results present the significant improvement in the performance of the proposed scheme in high-mobility situation in comparison with the existing ones. |
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