| 引用本文: | 冯祥,李建东.基于循环累积量的QAM信号载波相位估计算法.[J].国防科技大学学报,2006,28(1):48-50 ,76.[点击复制] |
| FENG Xiang,LI Jiandong.Cyclic Cumulants Based Carrier Phase Estimation Algorithm for QAM Signals[J].Journal of National University of Defense Technology,2006,28(1):48-50 ,76[点击复制] |
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| 基于循环累积量的QAM信号载波相位估计算法 |
| 冯祥1,2, 李建东1 |
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(1.西安电子科技大学ISN国家重点实验室，信息科学研究所，陕西 西安 710071;2.空军第一航空学院，湖南 信阳 464000)
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| 摘要: |
| 利用通信信号的循环平稳特性，在循环累积量域内提出了一种基于高阶循环累积量的载波相位估计算法，该算法通过提取观测样本的循环累积量特征并对其进行归一化，有效消除了信号能量、时延和成形脉冲参数对算法性能的影响。理论分析和仿真结果均证明了算法的正确性和有效性。 |
| 关键词: 载波相位估计 循环平稳性 高阶循环累积量 QAM |
| DOI： |
| 投稿日期：2005-09-06 |
| 基金项目:国家自然科学基金和微软亚洲研究院联合资助项目(60372048)；国家自然科学基金重大项目(60496316)；高等学校优秀青年教师教学科研奖励计划、教育部科学技术研究重点项目(104171)；国家863计划重大课题资助项目(2005AA123910) |
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| Cyclic Cumulants Based Carrier Phase Estimation Algorithm for QAM Signals |
| FENG Xiang1,2, LI Jiandong1 |
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(1.Information Science Institute, State Key Laboratory of ISN, Xidian University, Xi'an 710071, China;2.The First Aeronautic Institute of the PLA Air Force, Xinyang 464000, China)
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| Abstract: |
| By using the cyclostationarity property of communication signals, a higher-order cyclic cumulants based carrier phase estimation algorithm for QAM signals is proposed. Normalized higher-order cyclic cumulants were utilized for the estimation, and the effect of the signal energy, time delay and pulse function with different roll-off parameters on the estimator was eliminated by the normalization. The correctness and effectiveness of the proposed estimation algorithm were verified via theoretical analysis and simulations. |
| Keywords: carrier phase estimation cyclostationarity higher-order cyclic cumulants QAM |
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