TDMA-Like Infrared Uplink with Multi-Faces Photodiode Access Points

Bui, Thai-Chien; Biagi, Mauro

doi:10.1109/iccw.2019.8757166

Cited by 6 publications

(7 citation statements)

References 9 publications

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“…The CU controls both entities. In [95], the authors proposed a design for a UL with multiple users which consisted of five photodiodes. The UE refers to the user's pieces of equipment, such as laptops, phones, or any other devices.…”

Section: Uplink Receiver Ulrmentioning

confidence: 99%

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A Review on LiFi Network Research: Open Issues, Applications and Future Directions

et al. 2021

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This paper extensively reviews and analyses Light Fidelity (LiFi), a new technology that uses light to transmit data as a high-speed wireless connection system from a wide spectrum of domains. An in-depth analysis and classifications of pertinent research areas for LiFi networks are presented in this paper. The various aspects constituting this paper include a detailed literature review, proposed classifications, and statistics, which further is deliberated to encompass applications, system architecture, system components, advantages, and disadvantages. LiFi and other technologies are compared, multi-user access techniques used in LiFi networks are investigated and open issues are addressed in detail. The paper is concluded with a comprehensive taxonomy of literature comparison that has served as the basis of the proposed open issues and research trends.

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Section: Uplink Receiver Ulrmentioning

confidence: 99%

“…By contrast, UE should be placed upward to maintain a stable connection for systems that use IR for UL. An IR ULT smart Time Division Multiple Access (TDMA)-based scheme was proposed in [95]. The authors proposed a scheme with hybrid access that aimed to ULT and/or DLT are essential for a complete LiFi system.…”

Section: Uplink Receiver Ulrmentioning

confidence: 99%

A Review on LiFi Network Research: Open Issues, Applications and Future Directions

et al. 2021

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“…Proposition 1. Provided the system parameters r, z a , z u , z b , m, A pd , ψ FoV , n, Λ b , l b and r ub (defined in Section III), the CDF of the optical wireless channel G can be calculated by (20). Note that ẑ = z a − z u , θ 3 = arcsin (l b /r ub ) and 1 S is an indicator function, which equals one if the condition S = {r|r ≥ ẑr ub / (z b − z u )} fulfilled and equals zero otherwise.…”

Section: A Statistics Of Optical Wireless Channelmentioning

confidence: 99%

“…An al-ternative solution that uses a beam steering mechanism has been proposed in [18], which is further improved by using an angular diversity receiver (ADR) in [19]. Another multiple output system with a multi-face PD has been investigated in [20], but the authors focus on increasing the maximum number of supported users. Concerns about LiFi link channel uncertainty caused by random UE orientation and link blockage have been raised by many publications, but no study has conducted a dedicated investigation on this issue.…”

Section: Introductionmentioning

confidence: 99%

Wireless Infrared-Based LiFi Uplink Transmission With Link Blockage and Random Device Orientation

Chen

Purwita

et al. 2021

IEEE Trans. Commun.

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Light-fidelity (LiFi) is recognised as a promising technology for next generation wireless access networks. However, limited research efforts have been spent on the uplink (UL) transmission system in LiFi networks. In this paper, a wireless infrared (IR)-based LiFi UL system is investigated. In particular, we focus on the performance of a single static user under the influence of random device orientation and link blockage. Simulations and mathematical analysis have been used to evaluate the UL system performance. The analytical expressions for the UL optical wireless channel and signal-to-noise ratio (SNR) statistics under the effects of random device orientation and link blockage are derived. The results show that the effects of random orientation and link blockage may lead to a decrease in coverage probability by 10% -40% with various SNR thresholds.

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“…An index time division multiple access (I-TDMA) was adopted to provide spectral efficiency enhancement in [26]. In [27], a TDMAlike multiple access was considered with infrared for uplink transmission. Researchers in [28] proposed a carrier sensing multiple access with collision detection (CSMA/CD) mechanism for bidirectional vehicular visible light networks.…”

Section: Introductionmentioning

confidence: 99%

Design and Demonstration of a TDD-Based Central-Coordinated Resource-Reserved Multiple Access (CRMA) Scheme for Bidirectional VLC Networking

et al. 2021

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TDMA-Like Infrared Uplink with Multi-Faces Photodiode Access Points

Cited by 6 publications

References 9 publications

A Review on LiFi Network Research: Open Issues, Applications and Future Directions

A Review on LiFi Network Research: Open Issues, Applications and Future Directions

Wireless Infrared-Based LiFi Uplink Transmission With Link Blockage and Random Device Orientation

Design and Demonstration of a TDD-Based Central-Coordinated Resource-Reserved Multiple Access (CRMA) Scheme for Bidirectional VLC Networking

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