Abstract：The existing indoor optical wireless communication systems can not provide good wireless coverage uniformity and are not suitable for commercial applications. Two distributed light design schemes were proposed to solve the above problems, which increased the group number of LED array, and then increased the uniformity of light distribution of every group. The simulation results indicate that with the same number of LED chips, the distributed light design scheme is superior to the traditional one in uniformity of wireless signal coverage and complexity of commercial implementation, and can avoid the coverage valley.
徐春. 基于LED室内光无线通信光源设计的比较及优化[J]. 计算机应用, 2012, 32(03): 819-822.
XU Chun. Comparison and optimization of light source design schemes for indoor optical wireless communication based on light emitting diode. Journal of Computer Applications, 2012, 32(03): 819-822.
O'BREAN D C, FAULKNER G. Home access networks using optical wireless transmission [C]// Proceedings of the 19th International Symposium Personal Indoor and Mobile Radio Communications. Piscataway, NJ: IEEE Press, 2008:15-18.
[2]
WANG Z, YU C, ZHONG W, JIAN C. Performance improvement by tilting receiver plane in M-QAM visible light communications [J]. Optics Express, 2011, 19(14):13418-13427.
[3]
ELGALA H, MESLEH R, HAAS H. Indoor Broadcasting via white LEDs and OFDM [J]. IEEE Transactions on Consumer Electronics, 2009, 55(3): 1127-1134.
[4]
SARKER S, DIXIT S, MUKHERJEE B. Hybrid Wireless-Optical Broadband-Access Network (WOBAN): A review of relevant challenges [J]. Journal of Lightwave Technology, 2007, 25(11): 3329-3340.
[5]
GREEN R J. Secure communications: the infrared alternative[C]// Proceedings of IEEE ICTON Mediterranean Winter Conference. Piscataway, NJ: IEEE Press, 2007: 1-4.
[6]
NTOGARIG, KAMALAKIS T, SPHICOPOULOS T. Performance analysis of non-directed equalized indoor optical wireless systems [C]// Proceedings of 2008 IEEE Communication Systems, Networks and Digital Signal Processing. Piscataway, NJ: IEEE Press, 2008: 156-160.
[7]
CARRUTHERS J B. Propagation modeling for indoor optical wireless communications using fast multi-receiver channel estimation [J]. IEE Proceedings Optoelectronics, 2003, 150(10): 473-481.
[8]
KOMINE T, NAKAGAWA M. Fundamental analysis for visible-light communication system using LED lights [J]. IEEE Transactions on Consumer Electronics, 2004, 50(1):100-107.
[9]
GRUBOR J. Broadband information broadcasting using LED-based interior lighting[J]. Journal of Lightwave Technology, 2008, 26(24):3883-3892.
BERTRAND M, BOUCHET O, BESNARD P. Personal optical wireless communications: LOS/WLOS/DIF propagation model and QOFI [C]// Proceedings of 2008 IEEE Communication Systems, Networks and Digital Signal Processing. Washington, DC: IEEE Computer Society, 2008:179-182.
[12]
WON E T. IEEE 802.15 IG-VLC Closing Report [C]// Proceedings of IEEE 802.15 Interim Meeting. Piscataway, NJ: IEEE Press, 2008.
[13]
KAHN J M, BARRY J R. Wireless infrared communication [J]. Proceedings of the IEEE,1997, 85(2):265-298.
[14]
HASHEMI S K. Orthogonal frequency division multiplexing for indoor optical wireless communications using visible light LEDs [C]// Proceedings of 2008 IEEE Communication Systems, Networks and Digital Signal Processing. Piscataway, NJ: IEEE Press, 2008: 174-178.
[15]
TANAKA Y. Indoor visible light data transmission system utilizing white LED lights [J]. IEICE Transactions on Communication, 2003,E86-B(8):2440-2454.
[16]
KOMINE T, LEE J H, HARUYAMA S, et al. Adaptive equalization system for visible light wireless communication utilizing multiple white LED lighting equipment [J]. IEEE Transactions on Wireless Communication, 2009, 8(6):2892-2900.
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