Highly Accurate Indoor Three-Dimensional Localization Technique in Visible Light Communication Systems

Abstract

BSTRACTLocalization, or positioning, is gaining the increasing attention of researchers around the world. The location information, especially the indoor location, is important for navigation systems, heating and air conditioning systems, illumination adjustment, humidity control, robot service, and so on. In this paper, we propose a three-dimensional indoor localization technique using visible light. The main goal of our proposed scheme is to improve the accuracy of VLC-based indoor localization by utilizing multiple VLC transmitters. The simulation results validate the performance of our proposed scheme.

Potential and challenges of VLC based IPS in underground mines

“…Some other methods use PD arrays [28] and cross correlation function between transmitter and receiver [29] in order to deal with angle diversity in the receiver side. In general, RSS based method increases their accuracy when a large number of LEDs are perceived [30], multipath effects are neglected and non-tilt receivers are considered.…”

Indoor visible light communication localization system utilizing received signal strength indication technique and trilateration method

“…2(a).The coordinator, the visible LEDs, and the smart device as a mobile user are three main parts as required in the protocol of IEEE 802.15.7. 8 The standard room size is 5 × 5 m 2 with height 3 m, and the receiver plane is 0.75 m above floor as shown in Figs. 1 and 2(a).…”

“…In addition, these works did not calculate the location error for all positions in a standard size room and did not take into account the impulse response of light-emitting diodes (LEDs). [1][2][3]5,[7][8][9][10][11][12][13][14][15] However, in Ref. 16, the influence of noise was considered, but the signal-to-noise ratio (SNR) was very high (i.e., SNR ¼ 30 dB).…”

“…In this paper, we focus on the RSSI technique because it does not need synchronization between the transmitter and the receiver and it is simple. 8 Our aim is to provide a precise estimation of the user's location and derive the performance degradation in a typical room where VLC is implemented. More precisely, • We design an integrated indoor VLC system end to end, that is, we take into account all the effects arising from resampling process, impulse response of LED, impulse response of photodetector (PD), and channel impulse response.…”

Secure MIMO Visible Light Communication System Based on User's Location and Encryption

“…There exit a number of techniques for the positioning of indoor systems including methods using LEDs that have been employed in Wi-Fi networks. One of these techniques is based on time difference of arrival of pulses (TDOA) where the difference of arrival times between signals at multiple transmitters is used to determine the relative position of the user [14], [15]. The second technique is based on the angle of arrival (AOA) and uses the angle from which a signal arrives at a receiver, where the target location in 2D is determined using only two known reference points and two measured angles [16].…”