| MIMO-OFDM系统中基于虚子载波的低复杂度盲频偏估计 |
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| 引用本文： | 井俊,胡映波,徐友云,蔡跃明.MIMO-OFDM系统中基于虚子载波的低复杂度盲频偏估计[J].信号处理,2008,24(4). |
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| 作者姓名： | 井俊 胡映波 徐友云 蔡跃明 |
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| 作者单位： | 解放军理工大学通信工程学院,南京,210007 |
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| 基金项目： | 国家自然科学基金，江苏省自然科学基金 |
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| 摘 要： | 频偏估计是MIMO-OFDM系统设计的一个关键问题.本文在前人研究成果的基础上,提出了一种基于OFDM系统固有虚子载波结构的低复杂度载波频偏估计算法,不需要任何额外的导频(零或非零)资源,在小频偏范围内可以精确估计出频偏,在频偏范围较大时,可通过增加泰勒级数近似项和应用迭代机制继续获得很高的估计精度.
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| 关 键 词： | 正交频分复用 虚子载波 盲同步 频偏估计 |
A Low-Complexity Blind Carrier Frequency Offset Estimation with Virtual Subcarriers for MIMO-OFDM Systems |
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| JING Jun,HU Ying-bo,XU You-yun,CAI Yue-ming.A Low-Complexity Blind Carrier Frequency Offset Estimation with Virtual Subcarriers for MIMO-OFDM Systems[J].Signal Processing,2008,24(4). |
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| Authors: | JING Jun HU Ying-bo XU You-yun CAI Yue-ming |
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| Abstract: | Carrier frequency offset (CFO) estimation is a key problem for MIMO-OFDM system.In this paper,a low-complexity blind CFO estimation algorithm with virtual subcarriers has been proposed.Since virtual subearriers are intrinsic for OFDM signals,the algorithm needs no pilots (zero or nonzero) at all.In small estimation range,accurate estimation can be got;in larger range,by exploiting more terms of Taylor's series approximation and iterative technique,the algorithm can also get fine result. |
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| Keywords: | OFDM Virtual Subcarrier Blind Synchronization Frequency Offset Estimation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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