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Title: Performance improvement by tilting receiver plane in M-QAM OFDM visible light communications
Authors: Wang, Z.
Yu, C. 
Zhong, W.-D.
Chen, J.
Issue Date: 4-Jul-2011
Source: Wang, Z., Yu, C., Zhong, W.-D., Chen, J. (2011-07-04). Performance improvement by tilting receiver plane in M-QAM OFDM visible light communications. Optics Express 19 (14) : 13418-13427. ScholarBank@NUS Repository.
Abstract: We propose a scheme to improve the SNR distribution as well as the spectral efficiency of M-QAM OFDM signal for indoor visible light communication by tilting the receiver plane. Newton method is employed for the photo-detector to receive maximum power by finding the optimal tilting angle. This method is a fast algorithm that only three searching steps are needed. The simulation results show that in the case of one LED source, the maximum spectral efficiency improvement is 0.44bit/s/Hz when the launching power of LED source is 12W; while in the case of four LED sources, the maximum spectral efficiency improvement is 0.21bit/s/Hz when the total launching power of the four LED sources is 12W. © 2011 Optical Society of America.
Source Title: Optics Express
ISSN: 10944087
DOI: 10.1364/OE.19.013418
Appears in Collections:Staff Publications

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