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OFDM系統(tǒng)中基于符號間相位差分調(diào)制的頻偏估計模糊度校正算法

曾嶸 趙春明

曾嶸, 趙春明. OFDM系統(tǒng)中基于符號間相位差分調(diào)制的頻偏估計模糊度校正算法[J]. 電子與信息學報, 2005, 27(3): 364-368.
引用本文: 曾嶸, 趙春明. OFDM系統(tǒng)中基于符號間相位差分調(diào)制的頻偏估計模糊度校正算法[J]. 電子與信息學報, 2005, 27(3): 364-368.
Zeng Rong, Zhao Chun-ming. Frequency Ambiguity Resolution Algorithm for OFDM Systems Based on Phase Differential Modulation between Adjacent Symbols[J]. Journal of Electronics & Information Technology, 2005, 27(3): 364-368.
Citation: Zeng Rong, Zhao Chun-ming. Frequency Ambiguity Resolution Algorithm for OFDM Systems Based on Phase Differential Modulation between Adjacent Symbols[J]. Journal of Electronics & Information Technology, 2005, 27(3): 364-368.

OFDM系統(tǒng)中基于符號間相位差分調(diào)制的頻偏估計模糊度校正算法

Frequency Ambiguity Resolution Algorithm for OFDM Systems Based on Phase Differential Modulation between Adjacent Symbols

  • 摘要: OFDM系統(tǒng)的性能對頻率偏移非常敏感。該文針對OFDM系統(tǒng)頻偏估計中所產(chǎn)生的模糊度問題提出了一種基于符號間相位差分調(diào)制的頻偏估計模糊度校正算法。它通過在相鄰OFDM符號中相同子載波間進行相位差分調(diào)制來校正頻偏估計模糊度。文中從理論上給出并證明了算法具有唯 可辨識性的充分條件,并分析比較了算法的復雜度和定時誤差對算法性能的影響。理論分析和仿真結(jié)果表明,在性能相近的前提下,該文提出的頻偏估計模糊度校正算法具有運算量小和對定時誤差不敏感的優(yōu)點。
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  • 收稿日期:  2003-10-27
  • 修回日期:  2004-03-22
  • 刊出日期:  2005-03-19

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