LED based indoor positioning algorithm combined with hybrid OFDM

被引：0

作者：

Wang J. ^{[1
]}

Li H. ^{[1
]}

Zhang X. ^{[1
]}

Wu R. ^{[1
]}

机构：

[1] School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan

来源：

| 1600年 / Huazhong University of Science and Technology卷 / 45期

关键词：

Asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM); Indoor positioning; Multipath distortion; Pulse amplitude modulated discrete multitone (PAM-DMT); Visible light communication (VLC);

D O I：

10.13245/j.hust.171104

中图分类号：

学科分类号：

摘要：

Since the performance of existing indoor positioning system is limited by multipath distortion, an light-emitting-diode (LED) based indoor positioning algorithm combined with hybrid orthogonal frequency division multiplexing (HOFDM) was proposed, where orthogonal frequency division multiplexing (OFDM) was applied to combat the effect of multipath distortion as well as increasing data rate. In this scheme, asymmetrically clipped optical OFDM (ACO-OFDM) was transmitted on the odd subcarriers while using pulse amplitude modulated discrete multitone (PAM-DMT) to modulate the imaginary part of each even subcarrier. Moreover, a received-signal-strength (RSS) technique was used to determine the location of the receiver. The positioning errors for all the locations in the room and the impact of different system parameters on the positioning accuracy were further investigated compared with the systems based on ACO-OFDM. Simulation results demonstrate that the proposed algorithm can achieve position error of less than 0.2 m even with multipath distortion, which outperforms its conventional counterpart. © 2017, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：17 / 21

页数：4

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