Performance improvement by tilting receiver plane in M-QAM OFDM visible light communications

被引：38

作者：

Wang, Zixiong ^{[1
]}

Yu, Changyuan ^{[2
,3
]}

Zhong, Wen-De ^{[1
]}

Chen, Jian ^{[4
]}

机构：

[1] Nanyang Technol Univ, Network Technol Res Ctr, Sch Elect & Elect Engn, Singapore 637353, Singapore

[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

[3] A STAR Inst Infocomm Res I2R, Singapore 138632, Singapore

[4] Nanjing Univ Posts & Telecommun, Sch InfoComm Engn, Nanjing 210003, Peoples R China

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 14期

关键词：

D O I：

10.1364/OE.19.013418

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2011 Optical Society of America

引用

页码：13418 / 13427

页数：10

共 16 条

[1]

[Anonymous], 2006, P 2 INT C TESTB RES, DOI DOI 10.1109/TRIDNT.2006.1649137

[2]

[Anonymous], 2002, APPROXIMATION THEORY

[3] OFDM for Optical Communications [J].

Armstrong, Jean .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2009, 27 (1-4) :189-204

[4]

BARRY JR, 2006, WIRELESS INFRARED CO

[5]

Edwards C.H. e., 2002, Calculus

[6] Indoor Broadcasting via White LEDs and OFDM [J].

Elgala, Hany ;

Mesleh, Raed ;

Haas, Harald .

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, 2009, 55 (03) :1127-1134

[7]

HASHEMI S, 2008, IEEE 6 INT S COMM SY, P174

[8]

Jha U.S., 2007, OFDM FIXED MOBILE BR

[9] Fundamental analysis for visible-light communication system using LED lights [J].

Komine, T ;

Nakagawa, M .

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, 2004, 50 (01) :100-107

[10] Impact of Nonlinear LED Transfer Function on Discrete Multitone Modulation: Analytical Approach [J].

Neokosmidis, Ioannis ;

Kamalakis, Thomas ;

Walewski, Joachim W. ;

Inan, Beril ;

Sphicopoulos, Thomas .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2009, 27 (22) :4970-4978

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