Visible Laser Light Communication Based on LDPC-Coded Multi-Band CAP and Adaptive Modulation

In this paper, a multi-band carrierless amplitude and phase (CAP) modulation format based on a low-density parity-check (LDPC) code and an adaptive modulation is experimentally demonstrated in visible laser light communication (VLLC) for the first time. To achieve high spectral efficiency (SE) of the VLLC system, the effects of the LDPC code and adaptive modulation for the VLLC system are investigated. In addition, the relationship between SE and subcarrier <italic>m</italic>, where <italic>m</italic> = {1, 2, 4} with a total bandwidth of 862.5 MHz, is analyzed. The experimental results show that the optimal tradeoff between SE and bit error ratio (BER) performance is 64/64/64/16-quadrature amplitude modulation for 4-CAP system, with SE (net bit rate) of 3.56 b/s/Hz (3.08 Gb/s) under the BER of 10<sup>−3</sup>.

[1]  Sunghwan Kim,et al.  Adaptive FEC Codes Suitable for Variable Dimming Values in Visible Light Communication , 2015, IEEE Photonics Technology Letters.

[2]  I. White,et al.  100-Gb/s Hybrid Multiband CAP/QAM Signal Transmission Over a Single Wavelength , 2015, Journal of Lightwave Technology.

[3]  Hao-Chung Kuo,et al.  Phosphorous Diffuser Diverged Blue Laser Diode for Indoor Lighting and Communication , 2015, Scientific Reports.

[4]  Stanislav Zvanovec,et al.  A Multi-CAP Visible-Light Communications System With 4.85-b/s/Hz Spectral Efficiency , 2015, IEEE Journal on Selected Areas in Communications.

[5]  Jing He,et al.  Experimental Demonstration of Software-Configurable Asynchronous Real-Time OFDM Signal Transmission in a Hybrid Fiber-VLLC System , 2017, IEEE Photonics Journal.

[6]  Ming Jiang,et al.  Analysis and Optimization of P-LDPC Coded RGB-LED-Based VLC Systems , 2015, IEEE Photonics Journal.

[7]  Jing He,et al.  Experimental Demonstration of OQAM-OFDM based MIMO-NOMA over Visible Light Communications , 2018, 2018 Optical Fiber Communications Conference and Exposition (OFC).

[8]  Lin Chen,et al.  Enhanced Performance of CAP System Using an Overlap Frequency-Domain Equalization Scheme , 2016, IEEE Photonics Journal.

[9]  A D Ellis,et al.  10 Mb/s visible light transmission system using a polymer light-emitting diode with orthogonal frequency division multiplexing. , 2014, Optics letters.

[10]  S. Denbaars,et al.  4 Gbps direct modulation of 450 nm GaN laser for high-speed visible light communication. , 2015, Optics express.

[11]  Jaafar M. H. Elmirghani,et al.  Mobile Multi-Gigabit Visible Light Communication System in Realistic Indoor Environment , 2015, Journal of Lightwave Technology.

[12]  H. Haas,et al.  An LED Model for Intensity-Modulated Optical Communication Systems , 2010, IEEE Photonics Technology Letters.

[13]  Harald Haas,et al.  Indoor optical wireless communication: potential and state-of-the-art , 2011, IEEE Communications Magazine.

[14]  Lin Chen,et al.  Real-time VLLC-OFDM HD-SDI video transmission system with TS-based SFO estimation , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[15]  Gee-Kung Chang,et al.  Orthogonal Multiband CAP Modulation Based on Offset-QAM and Advanced Filter Design in Spectral Efficient MMW RoF Systems , 2017, Journal of Lightwave Technology.

[16]  Lin Chen,et al.  WDM–CAP–PON integration with VLLC system based on optical frequency comb , 2016 .

[17]  Alexander Buck,et al.  Laser Light in the BMW i8 Design, System Integration and Test , 2014 .

[18]  Sien Chi,et al.  Performance Comparison of OFDM Signal and CAP Signal Over High Capacity RGB-LED-Based WDM Visible Light Communication , 2013, IEEE Photonics Journal.

[19]  Idelfonso Tafur Monroy,et al.  Multiband Carrierless Amplitude Phase Modulation for High Capacity Optical Data Links , 2014, Journal of Lightwave Technology.

[20]  Lin Chen,et al.  Low-cost bidirectional hybrid fiber-visible laser light communication system based on carrier-less amplitude phase modulation , 2016 .

[21]  Jianping Wang,et al.  Performance Improvement of VLC System Using GaN-Based LEDs With Strain Relief Layers , 2016, IEEE Photonics Technology Letters.

[22]  Stefan Videv,et al.  Towards a 100 Gb / s visible light wireless access network , 2015 .