非视距传播下LTE的频率定位算法  

LTE frequency localization algorithm in NLOS propagation enviroment

作　　者：郑敏 毛永毅[2] 杨阳[1] 

机构地区：[1]西安邮电大学电子工程学院,陕西西安710061 [2]西安邮电大学研究生部,陕西西安710061

出　　处：《电子技术应用》2014年第2期91-93,共3页Application of Electronic Technique

基　　金：陕西省自然科学基金赞助项目(2009JM8015);陕西省教育厅专项科研项目(2010JK815)

摘　　要：基于单次反射信道模型,针对LTE通信网络在非视距传播环境下提出了一种基于频率的定位算法。首先根据信道传输模型计算路径损耗,再由路径损耗计算移动台与基站之间的距离,然后利用BP神经网络修正NLOS误差,最后利用最小二乘LS定位算法进行移动台定位。仿真结果表明,该基于频率的移动台定位算法定位精确,效果良好。Based on a single reflection channel model, this paper presents a localization algorithm based on frequency for the LTE communication network in non line-of-sigh （NLOS） propagation environment. First of all, according to the channel transmission model, calculate the path loss. Secondly, according to the path loss, calculate the distance between mobile station and base station. Thirdly, the algorithm using BP neural network is able to correct the NLOS errors. At last, MS can be estimated by least-square（LS） algorithm, Simulation results show that mobile location algorithm based on the frequency of the exact locate the good effect.

关 键 词：NLOS误差 路径损耗 BP神经网络 LS算法 

分 类 号：TN929.5[电子电信—通信与信息系统]