【摘要】 针对传统单点指纹定位技术出现的定位点偏移过远问题,研究了基于CSI指纹序列匹配的LTE室内定位方法,利用OFDM子载波的CSI信息作为指纹特征并根据运动的连续性构建了指纹序列库,进一步引入序列匹配算法实现用户定位。实验结果表明,所提方法能够在提升指纹数据灵敏度和稳定性的同时,有效地降低定位出错概率,从而提升了LTE系统的定位性能。更多还原

【Abstract】 In order to solve the problem that the positioning result of traditional single point fingerprint positioning technology is far away from the real position,an LTE indoor positioning method based on CSI fingerprint sequence matching is proposed.The CSI information of OFDM subcarriers is used as fingerprint characteristics and a fingerprint sequence database is constructed according to the continuity of motion.Moreover,a sequence-matching algorithm is introduced to realize user positioning.The results show that the proposed method can not only improve the sensitivity and stability of fingerprint data,but also effectively reduce the positioning error probability and improve the positioning performance of LTE system.更多还原