Correlation-based frequency offset estimation in MIMO system

Correlation-based frequency offset estimation in MIMO system
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DOI：
10.1109/vetecf.2003.1285055
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发表时间：
2003
期刊：
2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484)
影响因子：
--
通讯作者：
Yao Yao-Yao;T. Ng
Yao Yao-Yao;T. Ng
中科院分区：
其他
文献类型：
--
作者：
Yao Yao-Yao;T. Ng

文献摘要

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该论文解决了 MIMO 系统在未知信道信息的情况下的频偏估计问题。提出了一种有效的频偏估计导频符号辅助算法。利用沃尔什码的正交特性，提出了一种二阶估计器，可以显着减轻MAI（多天线干扰）。我们还推导了 MIMO 系统的 Cramer-Rao 界；将数值结果与仿真结果进行比较，以说明新算法的效率。
The paper addresses the problem of frequency offset estimation in the presence of unknown channel information for a MIMO system. An efficient pilot symbol-aided algorithm for frequency offset estimation is proposed. Taking advantage of the orthogonal property of Walsh codes, a second-order estimator, which can substantially mitigate the MAI (multi-antenna interference), is proposed. We also derive the Cramer-Rao bound for the MIMO system; the numerical results are compared with simulation results to illustrate the efficiency of the novel algorithm.