| 一种适用于NLOS环境的LTE终端迭代定位算法 |
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| 引用本文： | 阎 龙,高泽华,高 峰.一种适用于NLOS环境的LTE终端迭代定位算法[J].计算机应用研究,2014,31(3):876-878. |
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| 作者姓名： | 阎 龙 高泽华 高 峰 |
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| 作者单位： | 北京邮电大学信息与通信工程学院网络体系构建与融合北京市重点实验室, 北京 100876 |
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| 摘 要： | NLOS(non line of sight, 非视距)误差是影响LTE终端定位精度主要因素之一, 针对这一问题, 提出了一种减小该误差的迭代定位算法, 通过引入误差系数重构OTDOA(observed time difference of arrival, 到达时间观测差)测量值, 采用迭代计算获取一组最优误差系数来改善NLOS误差的影响。该算法不需要信道环境的先验信息, 且可通过分层细化减小计算量。仿真结果表明, 该算法能有效地减小NLOS环境下的定位误差。
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| 关 键 词： | LTE 非视距 终端定位 到达时间观测差 迭代定位算法 |
Iterative location algorithm for LTE mobile station under NLOS environment |
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| YAN Long,GAO Ze-hu,GAO Feng.Iterative location algorithm for LTE mobile station under NLOS environment[J].Application Research of Computers,2014,31(3):876-878. |
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| Authors: | YAN Long GAO Ze-hu GAO Feng |
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| Affiliation: | Beijing Key Laboratory of Network System Architecture & Convergence, School of Information & Communication Engineering, Beijing University of Posts & Telecommunications, Beijing 100876, China |
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| Abstract: | NLOS error is one of the important factors affecting LTE terminals' location accuracy. In order to solve the problem, this paper proposed an iterative location algorithm to reduce the NLOS error. It introduced the error coefficients to reconstruct measured OTDOA and found the optimal group of coefficients through iteration to compensate NLOS error's influence. This algorithm did not require the priori information of the channel environment and it could reduce the computing complexity through step-wise refinement. The simulation result shows that this algorithm can efficiently reduce the NLOS error. |
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| Keywords: | LTE NLOS terminal positioning OTDOA iterative location algorithm |
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