| 摘要: |
| 应用修正的ESPRIT算法估计6种数字调制通信信号的载波频率，并且和其他两种算法的性能作了比较。仿真表明，在中等信噪比条件下，ESPRIT算法对载波频率的估计具有均值精确、方差小的特点，表现出较好的实用性和较强的稳健性。 |
| 关键词: 载波频率估计 ESPRIT算法 非合作通信 数字调制 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:April 25, 2005Revised:November 25, 2005 |
| 基金项目: |
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| Carrier Frequency Estimation Algorithms for Digital Modulated Signals |
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| Abstract: |
| A modified ESPRIT(estimating signal parameter via rotational invariance technique) algorithm is used to estimate the carrier frequency.Six modulation schemes of interest are considered.Computer simulations show that the modified ESPRIT algorithm is characterized by its high accuracy and low estimation variance,and it has the advantages over those available of robustness and practicability. |
| Key words: carrier frequency estimation ESPRIT algorithm non - cooperative communication digital modulation |
