Resource allocation for multichannel broadcasting visible light communication

Le, Nam-Tuan; Jang, Yeong Min

doi:10.1016/j.optcom.2015.07.006

Cited by 15 publications

(5 citation statements)

References 18 publications

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“…To get a better understanding about the effect of fulfilling certain illumination requirements on defining Z 1 (ρ), we assume that the brightness span is defined by [E min , E max ] = [200, 800] lx, as considered in [52]. In such a case, we can rewrite (19) as…”

Section: Effect Of Illumination Requirementsmentioning

confidence: 99%

“…which is a function of only the vertical distance d v , and the LED half intensity viewing angle θ 1 through m 1 . Now by combining (19) and (13), we have the following modified constraint on defining Z(ρ):…”

Section: Effect Of Illumination Requirementsmentioning

confidence: 99%

“…Consequently, the problem of allocating the available (and limited) bandwidth and power resources among the existing users becomes an issue that should be well handled in order to optimize the system performance. This problem has been addressed by many researchers and different resource allocation (RA) approaches have been investigated [16,17,18,19,20,21,22]. For instance, Soltani et al in [16] investigate different OFDMA scheduling schemes based on the subcarrier clustering, which can significantly reduce the feedback information sent by users.…”

Section: Introductionmentioning

confidence: 99%

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Resource allocation and interference management in OFDMA-based VLC networks

Hammouda

Vegni

Haas

et al. 2018

Physical Communication

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Resource allocation and interference management are two main issues that need to be carefully addressed in visible light communication (VLC) systems. In this paper, we propose a resource allocation scheme that can also handle the intercell interference in a multi-user VLC system that employs orthogonal frequency division multiple access (OFDMA). Particularly, we suggest dividing the cell coverage into two non-overlapping zones and performing a two-step resource allocation process, in which each step corresponds to a different level of allocating resources, i.e., zone and user levels. We initially define both zones in terms of the physical area and the amount of allocated resources and we investigate the impact of illumination requirements on defining both zones. Through simulations, we evaluate the performance of the proposed scheme in terms of the area spectral efficiency and the fairness level between the two zones. We show that both performance measures can be potentially enhanced by carefully setting a certain design parameter that reflects the priority level of the users located in the region around the cell center, denoted as Zone 0, in terms of the achievable rate. We further eventuate the system performance in a realistic transmission ✩ scenario using a simulation tool.Recently, the noticeable advances in white light emitting diodes (LEDs) technology motivated utilizing the visible light spectrum for data transmission along with the white LEDs main function of illumination [6,7,8,9,10,11].In addition to providing the required bandwidth, using white LEDs for data transmission has many advantages over the RF technology. For example, they are cheap, energy efficient and no extra infrastructure is needed since white LEDs would be already installed for lighting. Furthermore, using white LEDs for data transmission would inherently ensure data security since light does not propagate through walls.

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Section: Effect Of Illumination Requirementsmentioning

confidence: 99%

Section: Effect Of Illumination Requirementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Resource allocation and interference management in OFDMA-based VLC networks

Hammouda

Vegni

Haas

et al. 2018

Physical Communication

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“…Today visible light communication (VLC)is developing rapidly for its safety and large bandwidth [1][2][3][4][5]. Now the main research direction is to approach high speed transmission.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of VLC to Sushisen Algorithms Using BER Performance of the FSK Communication Network

Senthil

2018

AJES

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In this article, wide menstruates a visible light verbal exchange (VLC) system upon eight meters fair space transmission based concerning a commercial LED yet a grantee between coalitions with an audio interface on a clever phone. The signal is in FSK modulation format. The profitable empirical accomplishment validates the probability regarding the proposed rule between future wi-fi communication networks.

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“…The proposed technique can decrease the data rate and introduce some other limitations [13]. Offset-VPPM by SNUST [6]  VPPM by Intel Corp. [6] Phase-Shift-Keying (PSK)  Hybrid FSK/PSK by Kookmin University [6]  Spatial 2-PSK by Kookmin University [6] Abundant research has carried out in the last few years on the applications of OWC technology such as indoor localization [14,15] vehicular communication [16,17], vehicle positioning [18,19], resource allocation [20], etc. Other techniques based on screen and camera communication for digital signage and other applications have also been proposed, which have not included the idea of OWC technology [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Novel Compatible Encoding Scheme in the Time Domain for Image Sensor Communication

Nguyen

Hossain

Jang

2016

Sensors

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This paper presents a modulation scheme in the time domain based on On-Off-Keying and proposes various compatible supports for different types of image sensors. The content of this article is a sub-proposal to the IEEE 802.15.7r1 Task Group (TG7r1) aimed at Optical Wireless Communication (OWC) using an image sensor as the receiver. The compatibility support is indispensable for Image Sensor Communications (ISC) because the rolling shutter image sensors currently available have different frame rates, shutter speeds, sampling rates, and resolutions. However, focusing on unidirectional communications (i.e., data broadcasting, beacons), an asynchronous communication prototype is also discussed in the paper. Due to the physical limitations associated with typical image sensors (including low and varying frame rates, long exposures, and low shutter speeds), the link speed performance is critically considered. Based on the practical measurement of camera response to modulated light, an operating frequency range is suggested along with the similar system architecture, decoding procedure, and algorithms. A significant feature of our novel data frame structure is that it can support both typical frame rate cameras (in the oversampling mode) as well as very low frame rate cameras (in the error detection mode for a camera whose frame rate is lower than the transmission packet rate). A high frame rate camera, i.e., no less than 20 fps, is supported in an oversampling mode in which a majority voting scheme for decoding data is applied. A low frame rate camera, i.e., when the frame rate drops to less than 20 fps at some certain time, is supported by an error detection mode in which any missing data sub-packet is detected in decoding and later corrected by external code. Numerical results and valuable analysis are also included to indicate the capability of the proposed schemes.

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Resource allocation for multichannel broadcasting visible light communication

Cited by 15 publications

References 18 publications

Resource allocation and interference management in OFDMA-based VLC networks

Resource allocation and interference management in OFDMA-based VLC networks

Enhancement of VLC to Sushisen Algorithms Using BER Performance of the FSK Communication Network

Design and Implementation of a Novel Compatible Encoding Scheme in the Time Domain for Image Sensor Communication

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