Performance Analysis of Circular Color Shift Keying in VLC Systems With Camera-Based Receivers

Halawi, Safa; Yaacoub, Elias; Kassir, Saadallah; Dawy, Zaher

doi:10.1109/tcomm.2019.2904503

Cited by 19 publications

(9 citation statements)

References 34 publications

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“…While these modulation schemes have relatively low complexity transceiver designs, they do not make full use of the luminous nature of the transmitted light signals in VLC systems. In [47] and [48], we have presented an endto-end VLC physical layer design with novel CSK modulation schemes and camera based receivers (see Fig. 6), to overcome both the background noise capturing ambient light in the environment and the directional noise capturing parasitic light sources such as street or other vehicles lights.…”

Section: Ambient Light Suppression In Communication Domainmentioning

confidence: 99%

Multidomain Suppression of Ambient Light in Visible Light Communication Transceivers

Ahmed

Atta

Farmer

et al. 2022

IEEE Trans. Intell. Transport. Syst.

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Visible light communication (VLC) transceivers suffer from optical interference and ambient light saturation, which severely affect the reception of optical signals. In this paper, we discuss various techniques for the suppression of ambient light in electronic, optical, communication and wavelength domains with focus on VLC systems for vehicular communication. Designing transceivers for outdoor VLC systems is challenging due to the dynamic environment and the time-varying nature of interference from different types of ambient light sources. This is a unique study that addresses the problem of optical interference in multiple physical domains and offers qualitative insights in a systematic manner.

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Section: Ambient Light Suppression In Communication Domainmentioning

confidence: 99%

Multidomain Suppression of Ambient Light in Visible Light Communication Transceivers

Ahmed

Atta

Farmer

et al. 2022

IEEE Trans. Intell. Transport. Syst.

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“…Also, outdoor environments are characterized by the presence of sunlight and various artificial light sources, which intensify the interference issue for OCC links. Specific modulation schemes and constellations are suggested in the literature to solve the interference problem and increase the data reception accuracy [198]- [200]. Interference can equally be reduced by limiting the camera's FoV or by adapting a region selection approach in capturing images [195], [201].…”

Section: B the Owc-iott In Smart Citiesmentioning

confidence: 99%

A Top-Down Survey on Optical Wireless Communications for the Internet of Things

Çelik¹,

Romdhane²,

Kaddoum³

et al. 2022

Preprint

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The Internet of Things (IoT) is a transformative technology marking the beginning of a new era where physical and digital worlds are integrated by connecting a plethora of uniquely identifiable smart objects. Although the Internet of terrestrial things (IoTT) has been at the center of our IoT perception, it has been recently extended to different environments, such as the Internet of underWater things (IoWT), the Internet of Biomedical things (IoBT), and Internet of underGround things (IoGT). Even though radio frequency (RF) based wireless networks are regarded as the default means of connectivity, they are not always the best option due to the limited spectrum, interference limitations caused by the ever-increasing number of devices, and severe propagation loss in transmission mediums other than air. As a remedy, optical wireless communication (OWC) technologies can complement, replace, or co-exist with audio and radio wave-based wireless systems to improve overall network performance. To this aim, this paper reveals the full potential of OWC-based IoT networks by providing a top-down survey of four main IoT domains: IoTT, IoBT, and IoGT. Each domain is covered by a dedicated and self-contained section that starts with a comparative analysis, explains how OWC can be hybridized with existing wireless technologies, points out potential OWC applications fitting best the related IoT domain, and discusses open communication and networking research problems. More importantly, instead of presenting a visionary OWC-IoT framework, the survey discloses that OWC-IoT has become a reality by emphasizing ongoing proof-of-concept prototyping efforts and available commercial off-the-shelf (COTS) OWC-IoT products.

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“…In this specification, 4-, 8-, and 16 presented an analysis of hybrid phase shift keying-color shift keying systems in the hue-saturation-value color space under the additive white Gaussian noise model [21] and proposed a design framework consisting of a mapping technique using amplitude phase shift keying and CSK based on the kite and color wheel structure [22]. In 2019, Halawi et al extended the performance analysis from a PD-based VLC system to an OCC system, using a camera as the receiver [23]. In [23], noise lights with different spatial distributions within pixel coordinates were considered in a 2-D camera-based channel model of OCC, similarly to [24], which was different from that in the PD-based VLC mentioned in the existing literature.…”

Section: Introductionmentioning

confidence: 99%

“…In 2019, Halawi et al extended the performance analysis from a PD-based VLC system to an OCC system, using a camera as the receiver [23]. In [23], noise lights with different spatial distributions within pixel coordinates were considered in a 2-D camera-based channel model of OCC, similarly to [24], which was different from that in the PD-based VLC mentioned in the existing literature.…”

Section: Introductionmentioning

confidence: 99%

Camera-Based Channel Modeling and Symbol Error Rate Analysis of CSK Modulation for Outdoor OCC Systems

Dong

2022

IEEE Access

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A camera with an image sensor is an important alternative device to a photodiode-based receiver of visible-light communication in outdoor scenarios. The intrinsic color separation capability of a camera qualifies color shift keying (CSK) modulation as an intuitive solution to enhance the achievable data rate. The symbol error rate (SER) of CSK modulation is considerably important to system design and performance evaluation, and has not been extensively investigated for outdoor optical camera communication systems from the viewpoint of camera-based channel and image processing-based demodulation. In this study, a two-level channel model is proposed to characterize CSK transmission in a single pixel and in the entire image. A general framework of SER analysis for arbitrary CSK constellations was proposed by directly calculating the upper bounds from the empirical distribution of the noise light in the CIE 1931 color space. Through numerical simulations, the influence of the image detector on CSK demodulation was evaluated. The results indicated that an accurate target region is important for maintaining the SER, and an enlarged target region is beneficial when the maximum ratio combination and selective combination algorithms are used in pixel combination.

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Performance Analysis of Circular Color Shift Keying in VLC Systems With Camera-Based Receivers

Cited by 19 publications

References 34 publications

Multidomain Suppression of Ambient Light in Visible Light Communication Transceivers

Multidomain Suppression of Ambient Light in Visible Light Communication Transceivers

A Top-Down Survey on Optical Wireless Communications for the Internet of Things

Camera-Based Channel Modeling and Symbol Error Rate Analysis of CSK Modulation for Outdoor OCC Systems

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