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| MPSK信号循环谱检测与码元速率估计改进算法 | |
| 引用本文： | 郑鹏,刘锋,张鑫,陶然.MPSK信号循环谱检测与码元速率估计改进算法[J].电光与控制,2012,19(8):41-44. |
| 作者姓名： | 郑鹏 刘锋 张鑫 陶然 |
| 作者单位： | 1. 海军航空工程学院电子信息工程系,山东烟台,264001 2. 海军航空工程学院电子信息工程系,山东烟台264001;北京理工大学信息科学技术学院,北京1000811 3. 北京理工大学信息科学技术学院,北京,1000811 |
| 基金项目： | 国家自然科学基金，国家部委预研资助基金 |
| 摘 要： | 利用循环谱理论对MPSK信号进行检测和参数估计,分析了其循环谱包络特征;在有限数据下,为实现更低信噪比情况下MPSK信号的检测与码元速率估计,提出一种改进算法。该算法基于数据分段处理和重叠保留,通过在非零循环频率上一维谱峰搜索实现信号检测与码元速率估计,能够有效地抑制噪声的影响,避免多维搜索,计算量小。分析了算法性能,给出了算法实现的具体步骤,并进行了计算机仿真。仿真结果证明了所提算法的有效性。 |
| 关 键 词： | MPSK信号 循环谱 检测 码元速率估计 改进算法 |
| 收稿时间： | 2011/7/4 |
An Improved Algorithm for Detection and Chip-Rate Estimation for MPSK Signal Based on Cyclic Spectrum |
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| ZHENG Peng , LIU Feng , ZHANG Xin , TAO Ran.An Improved Algorithm for Detection and Chip-Rate Estimation for MPSK Signal Based on Cyclic Spectrum[J].Electronics Optics & Control,2012,19(8):41-44. | |
| Authors: | ZHENG Peng LIU Feng ZHANG Xin TAO Ran |
| Affiliation: | 1.Department of Electronics and Information Engineering,Naval Aeronautical and Astronautical University,Yantai 264001,China;2.Institute of Information And Science,Beijing Institute of Technology,Beijng 100081,China) |
| Abstract: | The cyclic spectrum theory was applied to detect and estimate parameters of MPSK signal and the cyclic spectrum amplitude of the signal was analyzed.An improved estimation algorithm was proposed to realize detection and chip-rate estimation of the signal in limited data length.The algorithm based on data division and overlap reservation could restrain the noise effectively.The chip-rate estimation was realized by searching non-zero cyclic frequencies which could shorten the computing time and avoid multi-dimensional search.The performance of the algorithm was analyzed and computer simulation was made.The simulation results proved the validity of the method. |
| Keywords: | MPSK signal cyclic spectrum detection chip-rate estimation improved algorithm |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |