西安电子科技大学学报（自然科学版）2018，Vol.45Issue(2)：1-6,6.DOI:10.3969/j.issn.1001-2400.2018.02.001
联合频相估计中的对称化解耦合技术
Symmetry decoupling technique in joint frequency-phase estimation
摘要
Abstract
In burst-mode communication systems,considering the great influence of the residual frequency offset on the phase estimation in joint frequency-phase estimation,the symmetry decoupling technique is proposed.First,the characteristic is analyzed that the symmetrical set of sampling instants can decouple the joint frequency-phase estimation.Then the concept of symmetry decoupling technique is proposed.Second, the symmetry decoupling technique is applied to the joint frequency-phase estimation under both the data-aided mode and non-data-aided mode.Also, the relative theoretical analysis is given.On this basis, the concepts of serial/parallel joint frequency-phase estimators are proposed. Theoretical analysis and simulation results show that the structure processed by the symmetry decoupling technique can achieve a lower mean square error and improve the ability to tolerate the residual frequency offset by three times at least.Besides,the proposed technique has universality which can be applied to other joint frequency-phase estimation algorithms.关键词
联合频相估计/对称化解耦合/克拉美罗界/载波同步Key words
joint frequency-phase estimation/symmetry decoupling/Cramer-Rao bound/carrier synchronization分类
信息技术与安全科学引用本文复制引用
孙锦华,王昊,余忠洋..联合频相估计中的对称化解耦合技术[J].西安电子科技大学学报（自然科学版）,2018,45(2):1-6,6.基金项目
国家自然科学基金资助项目(61271175) （61271175）
