Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation

Miaofeng Li; Xiang Li; Chao Yang; Qi Yang; Shaohua Yu

doi:doi:10.3788/COL201715.050604

Chinese Optics Letters, 2017, 15 (5): 050604, Published Online: Jul. 23, 2018

Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation Download： 941次

Miaofeng Li ^1,2Xiang Li ^2,*Chao Yang ²Qi Yang ²Shaohua Yu ^1,2

Author Affiliations

¹ Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China

² State Key Laboratory of Optical Communication Technologies and Networks, Wuhan Research Institute of Posts Telecommunications, Wuhan 430074, China

Figures & Tables

Fig. 1. Practical scheme utilizing multiple LEDs to achieve full-range illumination and VLC.

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Fig. 2. Sub-band mapping with (a) localized and (b) interleaved schemes.

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Fig. 3. DSP schemes at the receiver side for (a) CCE and (b) QR-CE.

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Fig. 4. Experimental setup of the 2 m free-space VLC system with delay-line interference. OSC: oscilloscope; LPF: low-pass filter^[11,12].

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Fig. 5. Measured channel response of the signal under various (a) relative delays with power ratio of one and (b) power ratios with a relative delay of 3 m.

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Fig. 6. BER performances of the DFT-S OFDM signal with QR-CE and CCE, and a normal OFDM versus (a) relative delays at power ratio of one and (b) power ratios at a relative delay of 3 m under different sub-band mapping schemes.

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Fig. 7. BER performances of the QR-CE with (a) a different number of sub-bands and (b) a different number of pilots for the QR-CE.

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Fig. 8. Complementary cumulative distribution function (CCDF) versus PAPR for a normal and DFT-S OFDM with a different number of sub-bands, respectively.

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Miaofeng Li, Xiang Li, Chao Yang, Qi Yang, Shaohua Yu. Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation[J]. Chinese Optics Letters, 2017, 15(5): 050604.

Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation Download： 941次

Fig. 1. Practical scheme utilizing multiple LEDs to achieve full-range illumination and VLC.

Fig. 2. Sub-band mapping with (a) localized and (b) interleaved schemes.

Fig. 3. DSP schemes at the receiver side for (a) CCE and (b) QR-CE.

Fig. 4. Experimental setup of the 2 m free-space VLC system with delay-line interference. OSC: oscilloscope; LPF: low-pass filter^[11,12].

Fig. 5. Measured channel response of the signal under various (a) relative delays with power ratio of one and (b) power ratios with a relative delay of 3 m.

Fig. 6. BER performances of the DFT-S OFDM signal with QR-CE and CCE, and a normal OFDM versus (a) relative delays at power ratio of one and (b) power ratios at a relative delay of 3 m under different sub-band mapping schemes.

Fig. 7. BER performances of the QR-CE with (a) a different number of sub-bands and (b) a different number of pilots for the QR-CE.

Fig. 8. Complementary cumulative distribution function (CCDF) versus PAPR for a normal and DFT-S OFDM with a different number of sub-bands, respectively.

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Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation Download： 941次

Fig. 1. Practical scheme utilizing multiple LEDs to achieve full-range illumination and VLC.

Fig. 2. Sub-band mapping with (a) localized and (b) interleaved schemes.

Fig. 3. DSP schemes at the receiver side for (a) CCE and (b) QR-CE.

Fig. 4. Experimental setup of the 2 m free-space VLC system with delay-line interference. OSC: oscilloscope; LPF: low-pass filter[11,12].

Fig. 5. Measured channel response of the signal under various (a) relative delays with power ratio of one and (b) power ratios with a relative delay of 3 m.

Fig. 6. BER performances of the DFT-S OFDM signal with QR-CE and CCE, and a normal OFDM versus (a) relative delays at power ratio of one and (b) power ratios at a relative delay of 3 m under different sub-band mapping schemes.

Fig. 7. BER performances of the QR-CE with (a) a different number of sub-bands and (b) a different number of pilots for the QR-CE.

Fig. 8. Complementary cumulative distribution function (CCDF) versus PAPR for a normal and DFT-S OFDM with a different number of sub-bands, respectively.

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Fig. 4. Experimental setup of the 2 m free-space VLC system with delay-line interference. OSC: oscilloscope; LPF: low-pass filter^[11,12].