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|Title:||Performance improvement by tilting receiver plane in M-QAM OFDM visible light communications|
|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. https://doi.org/10.1364/OE.19.013418|
|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|
|Appears in Collections:||Staff Publications|
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