Towards achieving practical GPON FTTH designs

Ouali, Anis; Poon, Kin Fai; Lee, Beum-Seuk; Romaithi, Kaltham Al

doi:10.1109/camad.2015.7390490

Cited by 6 publications

(6 citation statements)

References 7 publications

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“…Although these results are limited to the analyzed city, this research opens new perspectives for studies that seek to minimize investments in the cable network. In this sense, future studies may explore the effects of planning strategies in defining the positions and number of optical network splitters [18] or the amount of fiber in the network cables [17]. Another possibility is to explore possible changes in the definition of the most advantageous network planning strategy when using other network design optimization methods [3,15,45,46].…”

Section: Discussionmentioning

confidence: 99%

“…Telecommunications network design studies generally focus on minimizing investments, i.e., minimizing the number of equipment and the size of the cable network. In this sense, such studies are restricted to the use, adaptation, and development of optimization methods (e.g., integer programming [3,11,15,45], combinatorial optimization [7], Fast Fourier Transform heuristic algorithms [17], Dijkstra algorithm [18,19], and other, for instance, [46]). In the case of minimizing cable network size, planners look for the shortest path between network vertices (streets and customers) to establish a minimal network.…”

Section: Cable Network Planning Scenariomentioning

confidence: 99%

“…However, path optimization algorithms [41] used to design the Steiner's network are heuristics that can yield suboptimal results [47,48]. Although no overall minimization of investments is guaranteed, these algorithms are widely used in network planning [12,21] and are found both for planning the expansion of existing cable networks [1,4,7,10,11,45] as well as for the planning of new cable networks [3,15,17,40]. However, although some of these studies are concerned with the Internet demand forecast models [1,7,11] and/or the geoprocessing of the features of the analyzed sites [17,18,43], these studies ignore the expand strategy and merely design an oversized network.…”

Section: Cable Network Planning Scenariomentioning

confidence: 99%

“…For the most part, the network planning literature is related to applying optimization methods [3,11,12,[15][16][17][18][19][20][21] to minimize investments in cables and equipment [5]. However, by focusing exclusively on investments, these studies disregard the growth in Internet demand over time that directly influences network designs.…”

Section: Introductionmentioning

confidence: 99%

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Expand or Oversize? Planning Internet Access Network in a Demand Growth Scenario

et al. 2020

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Internet network design specialists are looking for technologies and strategies to deliver network service under increased demand conditions. The choice of strategies is based on applying optimization and decision-making methods to select the most appropriate cable network design considering criteria established by the problem definition. However, this definition is itself a decision problem that has not received analysis in the literature. In particular, one of the most important questions is the necessity to define an expansion strategy. The first alternative (expansion) is to design a network to serve consumers with Internet demand equal to or greater than the predefined one to expand the network annually to serve consumers that reach the predefined Internet speed. The second alternative (oversizing) is to design a network to serve consumers with future Internet demand (after 5 years) at or above that the predefined one. Considering this, the objective of this research is to define the most advantageous strategy of expansion planning to attend a 5 years forecasted Internet demand, considering: (1) the possibility of utilizing a Gigabit-capable Passive Optical Network technology; (2) the application of the minimal Steiner tree and Dijkstra algorithms in planning procedures; (3) the influence of economic and technological factors on the demand forecast; (4) the aggressive, moderate, and conservative scenarios in decision-making. The results show that the over-dimensioning strategy reduces network investment by between 30 and 41%, but that this reduction does not always lead to a market investment ratio higher than that observed in the expansion strategy.

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Section: Discussionmentioning

confidence: 99%

Section: Cable Network Planning Scenariomentioning

confidence: 99%

Section: Cable Network Planning Scenariomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Expand or Oversize? Planning Internet Access Network in a Demand Growth Scenario

et al. 2020

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“…At present, fiber optic networks are fairly advanced. Fiber optic transmission has been extensively used in long-distance backbone networks, mid-distance urban networks, and shortdistance local networks [1][2][3]. Such trend of fiber optic transmission propels the development of light communication networks in free space and has become a popular research topic.…”

Section: Introductionmentioning

confidence: 99%

A 150 m/22.5 Gbaud PAM4-based FSO link

Tsai

2017

Laser Phys. Lett.

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A 22.5 Gbaud four-level pulse amplitude modulation (PAM4) signal applied to free-space optical link was experimentally tested using a 3 dB laser at a bandwidth of 10 GHz to directly modulate the 22.5 Gbaud PAM4 signal via injection-locked technology. Through the design of pre-compensation and equalizer for signal quality improvement, a successful transmission of 150 m in free space was achieved with good real-time bit error rate performance and clear eye diagrams (three independent eye diagrams).

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