[1] Yassin A, Nasser Y, Awad M et al. Recent advances in indoor localization: a survey on theoretical approaches and applications[J]. IEEE Communications Surveys & Tutorials, 19, 1327-1346(2017).

[2] Vitanov R I, Nikolov D N. A state-of-the-art review of ultra-wideband localization[C]. North Macedonia, 16-18(2022).

[3] Liu H H, Hao B, Yang J Z. Research on indoor location algorithm based on WiFi technology[C], 708-714(2022).

[4] Zhuang Y, Zhang C Y, Huai J Z et al. Bluetooth localization technology: principles, applications, and future trends[J]. IEEE Internet of Things Journal, 9, 23506-23524(2022).

[5] Zhuang Y, Hua L C, Qi L N et al. A survey of positioning systems using visible LED lights[J]. IEEE Communications Surveys & Tutorials, 20, 1963-1988(2018).

[6] Luo J H, Fan L Y, Li H S. Indoor positioning systems based on visible light communication: state of the art[J]. IEEE Communications Surveys & Tutorials, 19, 2871-2893(2017).

[7] Amini C, Taherpour A, Khattab T et al. Theoretical accuracy analysis of indoor visible light communication positioning system based on time-of-arrival[C], 15-18(2016).

[8] Du P F, Zhang S, Chen C et al. Demonstration of a low-complexity indoor visible light positioning system using an enhanced TDOA scheme[J]. IEEE Photonics Journal, 10, 7905110(2018).

[9] Sun X Q, Zou Y G, Duan J Y et al. The positioning accuracy analysis of AOA-based indoor visible light communication system[C], 186-190(2015).

[10] Xu W, Wang J, Shen H et al. Indoor positioning for multiphotodiode device using visible-light communications[J]. IEEE Photonics Journal, 8, 7900511(2016).

[11] Zhang X L, Duan J Y, Fu Y G et al. Theoretical accuracy analysis of indoor visible light communication positioning system based on received signal strength indicator[J]. Journal of Lightwave Technology, 32, 4180-4186(2014).

[12] Huang H Q, Yang A Y, Feng L H et al. Artificial neural-network-based visible light positioning algorithm with a diffuse optical channel[J]. Chinese Optics Letters, 15, 050601(2017).

[13] Qin L, Wang D X, Shi M Q et al. Indoor visible light localization system based on genetic algorithm-optimized extreme learning machine neural network[J]. Chinese Journal of Lasers, 49, 2106001(2022).

[14] Zhao X, Zhang J Y, Long Q Q. Indoor visible light positioning method using ISSA-ELM neural network based on circle chaotic mapping[J]. Acta Optica Sinica, 43, 0206004(2023).

[15] Qin L, Zhang C T, Guo Y et al. Research on visible light indoor localization algorithm based on Elman neural network[J]. Acta Optica Sinica, 42, 0506002(2022).

[16] Wang Z S, Shao J H, Wang P Y et al. An indoor visible light fingerprint localization algorithm based on GACNN’s improvement[J]. Laser Journal, 44, 158-163(2023).

[17] Zhao L, Liu H T, Chen J B. Indoor visible light location method based on neural network optimized by beetle antennae search algorithm[J]. Optical Communication Technology, 46, 1-7(2022).

[18] Qin L, Wang D X, Wang F Y et al. Indoor visible light positioning method based on extreme learning machine neural network[J]. Laser & Optoelectronics Progress, 59, 0304002(2022).

[19] Wang L X, Guo C L, Luo P F et al. Indoor visible light localization algorithm based on received signal strength ratio with multi-directional LED array[C], 138-143(2017).

[20] Xie G T, Luo Q Q, Li Z P et al. Multi-directional light-emitting diode aided visible light positioning system exploiting regular pyramid: design and demonstration[J]. Optical Engineering, 62, 078102(2023).

[21] Li Z P, Qiu G D, Zhao L et al. Dual-mode LED aided visible light positioning system under multi-path propagation: design and demonstration[J]. IEEE Transactions on Wireless Communications, 20, 5986-6003(2021).

[22] Mostafa A, Lampe L. Optimal and robust beamforming for secure transmission in MISO visible-light communication links[J]. IEEE Transactions on Signal Processing, 64, 6501-6516(2016).

[23] Barry J R, Kahn J M, Krause W J et al. Simulation of multipath impulse response for indoor wireless optical channels[J]. IEEE Journal on Selected Areas in Communications, 11, 367-379(1993).

[24] Moreno I, Sun C C. Modeling the radiation pattern of LEDs[J]. Optics Express, 16, 1808-1819(2008).