Enabling Technologies for High-Speed Visible Light Communication Employing CAP Modulation

Chi, Nan; Zhou, Yingjun; Liang, Shangyu; Wang, Fumin; Li, Jiehui; Wang, Yiguang

doi:10.1109/jlt.2017.2783906

Cited by 102 publications

(31 citation statements)

References 25 publications

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“…Visible light communication (VLC) is a promising supplement to the conventional radio frequency (RF) communication for future high-speed wireless access and has attracted increasing interests from both academia and industry [1], [2]. Compared to the RF technology, VLC exhibits advantages such as license-free, lower cost and higher security [3]. However, the main bottleneck of VLC is the limited modulation bandwidth, which severely limits the achievable capacity of VLC systems.…”

Section: Introductionmentioning

confidence: 99%

Performance-enhanced NOMA-VLC using subcarrier pairwise coding

Shi

Hong

et al. 2019

Optics Communications

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To alleviate the error propagation issue of non-orthogonal multiple access (NOMA) based visible light communication (VLC) systems, we propose and experimentally demonstrate the subcarrier pairwise coding (PWC) based NOMA-VLC. Without extra coding overhead, the computation-efficient subcarrier PWC can significantly improve the overall system performance by pairing the subcarriers of high signal-to-noise ratios (SNRs) with those of low SNRs. Under different transmitted baud rate from 150 MSa/s to 225 MSa/s, the bit error rate (BER) performance with and without PWC is investigated in a NOMA-VLC system. Experimental results show that with the optimized power ratio between the NOMA users, up to 3.3-dB Q 2-factor improvement can be achieved by the proposed scheme.

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Section: Introductionmentioning

confidence: 99%

Performance-enhanced NOMA-VLC using subcarrier pairwise coding

Shi

Hong

et al. 2019

Optics Communications

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“…Utilizing light-emitting diodes (LEDs), VLC can support illumination and communication simultaneously and offers the benefits of cost effectiveness, high security, low power consumption, and immunity to electromagnetic interference [1,2].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Zadoff-Chu Matrix Precoding for Visible Light Communication System with OFDM Modulation

Guo

2018

Advances in Condensed Matter Physics

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Light-emitting diode-(LED-) based visible light communication (VLC) has become a potential candidate for next generation high-speed indoor wireless communication. Due to the limited modulation bandwidth of the LED, orthogonal frequency division multiplexing (OFDM) modulation is particularly preferred in the VLC system to overcome the ISI, which suffers from the high peak-to-average power ratio (PAPR) and leads to severe performance loss. In this paper, we propose and experimentally demonstrate a novel Zadoff-Chu matrix (ZCM) precoding scheme, which can not only reduce the PAPR, but also provide uniform signal-to-noise ratio (SNR) profile. The theoretical analysis and simulation show that the proposed scheme achieves better PAPR performance compared with the traditional precoding schemes. The experimental demonstration further validates the bit error rate (BER) performance improvement, where the measured BERs are all below the 7% pre-forward error correction (pre-FEC) limit of 3.8 × 10 −3 when the transmitted data rate is 50 Mb/s.

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“…Compared with traditional radio frequency (RF) communication, VLC shows several advantages, such as being cost effective, license free, electromagnetic interference free, and highly secure. Therefore, it has been considered one of the most compelling technologies for supplementing traditional RF communication [1,2].…”

Section: Introductionmentioning

confidence: 99%

Experimental Demonstration of Special-Shaped 32-Quadrature Amplitude Modulation Constellations for Visible Light Communications

Guo

2018

Advances in Condensed Matter Physics

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With the rapid development of light-emitting diode, visible light communication (VLC) has become a candidate technology for the next generation of high-speed indoor wireless communication. In this paper, we investigate the performance of the 32-quadrature amplitude modulation (32-QAM) constellation shaping schemes for the first time, where two special circular constellations, named Circular (4, 11, 17) and Circular (1,5,11,15), and a triangular constellation are proposed based on the Shannon's criterion. Theoretical analysis indicates that the triangular constellation scheme has the largest minimum Euclidian distance while the Circular (4, 11, 17) scheme achieves the lowest peak-to-average power ratio (PAPR). Experimental results show that the bit error rate performance is finally decided by the value of PAPR in the VLC system due to the serious nonlinearity of the LED, where the Circular (4, 11, 17) scheme always performs best under the 7% preforward error correction threshold of 3.8 × 10 −3 with 62.5Mb/s transmission data rate and 1-meter transmission distance.

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Enabling Technologies for High-Speed Visible Light Communication Employing CAP Modulation

Cited by 102 publications

References 25 publications

Performance-enhanced NOMA-VLC using subcarrier pairwise coding

Performance-enhanced NOMA-VLC using subcarrier pairwise coding

Experimental Investigation of Zadoff-Chu Matrix Precoding for Visible Light Communication System with OFDM Modulation

Experimental Demonstration of Special-Shaped 32-Quadrature Amplitude Modulation Constellations for Visible Light Communications

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