Network Architecture of Bidirectional Visible Light Communication and Passive Optical Network

Chow, Chi‐Wai; Yeh, Chien‐Hung; Liu, Yang; Hsu, Chin-Wei; Sung, J. Y.

doi:10.1109/jphot.2016.2566340

Cited by 20 publications

(11 citation statements)

References 17 publications

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“…The signal received by BS 1 through b 1 is calculated in (22), shown at the top of the page. The signals received by BS 7 and BS 8 from b 7 and b 8 are presented in (23) and (24), respectively. In (22)-(24), P bj = K j P a is the power allocated to b j , with K j as the corresponding power control coefficient.…”

Section: A Backhaul Linksmentioning

confidence: 99%

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A Wireless Optical Backhaul Solution for Optical Attocell Networks

Kazemi

Safari

Haas

2019

IEEE Trans. Wireless Commun.

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The problem of backhauling for optical attocell networks has been approached by a number of wired solutions such as in-building power line communication (PLC), Ethernet and optical fiber. In this paper, an alternative solution is proposed based on wireless optical communication in visible light and infrared (IR) bands. A thorough analysis of signalto-interference-plus-noise (SINR) is elaborated for a multiuser optical attocell network based on direct current biased optical orthogonal frequency division multiplexing (DCO-OFDM) and decode-and-forward (DF) relaying, taking into account the effects of inter-backhaul and backhaul-to-access interferences. Inspired by concepts developed for radio frequency (RF) cellular networks, full-reuse visible light (FR-VL) and in-band visible light (IB-VL) bandwidth allocation policies are proposed to realize backhauling in the visible light band. The transmission power is opportunistically minimized to enhance the backhaul power efficiency. For a two-tier FR-VL network, there is a technological challenge due to the limited capacity of the bottleneck backhaul link. The IR band is employed to add an extra degree of freedom for the backhaul capacity. For the IR backhaul system, a power-bandwidth tradeoff formulation is presented. Closed form analytical expressions are derived for the corresponding power control coefficients. Finally, the network sum rate performance is studied using extensive Monte Carlo simulations. Index Terms-Light-fidelity (LiFi), optical attocell network, visible light communication (VLC), infrared (IR) communication, wireless backhaul, power control, multi-hop relaying, decodeand-forward (DF), direct current biased optical orthogonal frequency division multiplexing (DCO-OFDM). Received signal for the backhaul link of BS i on subcarrier k v b i,k Received noise for the backhaul link of BS i on subcarrier k γ b i Received SINR per subcarrier for the backhaul link of BS i R b i Overall achievable rate for the backhaul link of BS i Ba Bandwidth of the access system x a i,k Transmitted signal in the access link of BS i on subcarrier k y u,k Received signal for the uth UE on subcarrier k v a u,k Received noise for the uth UE on subcarrier k γu Received SINR per subcarrier for the uth UE Ra i Overall achievable rate for the access link of BS i R i Multiuser sum rate for the end-to-end downlink of BS i

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Section: A Backhaul Linksmentioning

confidence: 99%

“…In [22], Wang et al proposed an indoor VLC-based LAN architecture where optical BSs are connected to the core network via single mode fiber links. Furthermore, to enable multi-Gbits/s connectivity based on optical fiber, the integration of a passive optical network (PON) architecture with VLC was proposed [23].…”

Section: Introductionmentioning

confidence: 99%

A Wireless Optical Backhaul Solution for Optical Attocell Networks

Kazemi

Safari

Haas

2019

IEEE Trans. Wireless Commun.

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“…Most of the MA schemes in wireless communication such as time division multiple access (TDMA), frequency division multiple access (FDMA), code division multiple access (CDMA) and orthgonal frequency domian multiple access (OFDMA) have already been widely investigated for indoor VLC [7][8][9]. OFDMA has high spectrum efficiency and system capacity, which has been adopted for the fourth generation wireless communications and also widely investigated as a promising technique for coherent optical communications and passive optical network [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Experimental demonstration of IDMA‐OFDM for visible light communications

et al. 2018

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We experimentally demonstrate a multicarrier interleave division multiple access (IDMA) scheme for bidirectional visible light communications (VLC) using orthogonal frequency division multiplexing (OFDM), which has the advantages of good tolerance against multi-path, high spectral efficiency and excellent transmission performance. The generated IDMA signals are modulated on OFDM subcarriers and the different users are separated by the interleavers. When compared with OFDMA, IDMA-OFDM offers increased transmission spans of 30 cm and 50 cm at a BER of 10 −3 in the cases of 2 and 4 users, respectively.

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“…The all‐optical VPN concept was introduced several years since with an aim to avoid the limits of electronic‐to‐optical and optical‐to‐electronic conversions . A high majority of the existing solutions were proposed in the context of passive optical networks (PONs) . They focused on the reliable transportation of the signal to the intended user without ensuring protection against optical security threats.…”

Section: Introductionmentioning

confidence: 99%

“…[16][17][18] A high majority of the existing solutions were proposed in the context of passive optical networks (PONs). [19][20][21][22] They focused on the reliable transportation of the signal to the intended user without ensuring protection against optical security threats. In the work of Kim et al, 16 the authors proposed an all-optical VPN architecture using an orthogonal frequency-division multiplexing (OFDM)-based long-reach PON.…”

Section: Introductionmentioning

confidence: 99%

All‐optical VPN platform for multisite VLC‐based networks

Salhi

Sliti

Boudriga

2018

Trans Emerging Tel Tech

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Optical networks and, in particular, visible light communication represent a very promising communication medium for future‐generation company networks. The establishment of virtual private networks (VPNs) in these specific distributed networks is a fundamental issue. In this paper, we present an all‐optical VPN platform based on visible light communication small cells on the access side and an optical fiber link on the backbone side. We exploited the security enhancement using the superposition of optical signals encoded using optical code‐division multiplexing codewords specific to each user. Two VPN modes are proposed: transport and tunnel. Even though the transport mode provides a much lower blocking rate as well as transmission performance (lower packet delay), the tunnel mode is advantageous from a security perspective due to the embedded optical code‐division multiple access encoding that it implements. Simulations are carried out for both modes to study the performance and security level provided by the proposed VPN architecture relatively to specific parameters (codeword size and number of simultaneous users).

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Network Architecture of Bidirectional Visible Light Communication and Passive Optical Network

Cited by 20 publications

References 17 publications

A Wireless Optical Backhaul Solution for Optical Attocell Networks

A Wireless Optical Backhaul Solution for Optical Attocell Networks

Experimental demonstration of IDMA‐OFDM for visible light communications

All‐optical VPN platform for multisite VLC‐based networks

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