Title: A Design of Improved Multipath Vector Tracking Loop Based on the Blind Equalizer
Author(s): Dengao Li, Chong Han, Jumin Zhao, Wenhui Niu, Gang Wu
Published in: Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016)
September 12 - 16, 2016
Oregon Convention Center
Portland, Oregon
Pages: 478 - 485
Cite this article: Li, Dengao, Han, Chong, Zhao, Jumin, Niu, Wenhui, Wu, Gang, "A Design of Improved Multipath Vector Tracking Loop Based on the Blind Equalizer," Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016), Portland, Oregon, September 2016, pp. 478-485.
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Abstract: Due to the complex environment, multipath signals lose part of energy during propagation and lead to correlation function distortion. Considering that the position accuracy of the receiver will be reduced in strong multipath interference, vector tracking channel equalization algorithm is introduced to solve the problem. The iterative step size is adjusted by using tracking loop feedback as an error signal of CMA-DFE. The algorithm solves the problems of misjudgment rate and slows convergence of CMA-DFE algorithm with fixed step size, and achieved mitigation multipath interference. The experimental result of simulation demonstrates that the new algorithm can effectively inhibit multipath interference and compensate channels distortion. Keywords: GNSS; Vector tracking loop; Blind equalization; CMA-DFE