Key Considerations in the Modeling of Tropical Maritime Microwave Attenuations

Lee, Yee Hui; Meng, Yu Song

doi:10.1155/2015/246793

Cited by 15 publications

(10 citation statements)

References 16 publications

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“…On the other hand extreme surface turbulence such as rogue waves are usually instantaneous and random, presenting a challenge to the overall turbine structural integrity [6]. In general sea surface reflections are an ever-present scenario and greatly depend on the height of the nodes which is largely affected by oceanic wave motion [7].…”

Section: Challenges Of Signal Propagation Within Offshore Environmentsmentioning

confidence: 99%

“…Measurement campaigns by several research groups, including [12], [13] and [7], illustrated that the fading in the offshore environment can be better predicted using the two-ray model. In this section, we propose a novel diversity approach which could counteract deep fading due to surface reflections.…”

Section: Approach To Counteracting Sea Surface Reflectionsmentioning

confidence: 99%

“…Since h A1 = h B1 , we can apply the quadratic formula to equation (7) to get an explicit expression for ∆ h .…”

Section: Approach To Counteracting Sea Surface Reflectionsmentioning

confidence: 99%

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Point-to-Point Channel Modelling Within Offshore Wind Farms

Mbogo

Peng

Tang

2018

Advances in Intelligent Systems and Computing

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From the perspective of several measurement campaigns in the offshore environment, it has been reported that the sea surface reflections are the main source of deep fading. We present a novel solution to this problem, by investigating the analytical implications of the propagation model which best fits the offshore channel characteristics. We also present a novel and yet simple implementation of receiver diversity which can mitigate the fading caused by sea surface reflections and ensure that the link is always steady even under extreme turbulent conditions.

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Section: Challenges Of Signal Propagation Within Offshore Environmentsmentioning

confidence: 99%

Section: Approach To Counteracting Sea Surface Reflectionsmentioning

confidence: 99%

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Point-to-Point Channel Modelling Within Offshore Wind Farms

Mbogo

Peng

Tang

2018

Advances in Intelligent Systems and Computing

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“…Thus, in this study, a 3‐ray propagation model proposed in the work of Lee and Meng is used in the simulation part. The model takes into account the direct ray, the ray reflected from the water surface, and the ray refracted by means of the evaporation duct.…”

Section: Simulationsmentioning

confidence: 99%

A novel sea communication topology and IP routing algorithm by using LTE and WMN in NS‐3

Kasim

Özdemir

2017

Trans Emerging Tel Tech

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This paper proposes a new heterogeneous network topology and a routing algorithm for a marine communication system involving ships and other marine vessels from a terrestrial point on the shore. Topology involves the use of a collection of Long‐Term Evolution (LTE) systems and Wi‐Fi mesh networks. There are multiple clusters/ships in the network, with an LTE system centered around each cluster. Communication between the clusters happens through LTE, and within the cluster mesh, networking is employed. Every end user in the ship has access to the server application by means of mesh networking from the respective access point in the cluster/ship. The routing algorithm is designed based on the best signal‐to‐interference‐plus‐noise‐ratio path and minimum delay combination, which selects the best modulation scheme and hence the best data rate. The algorithm employs a new parameter that is derived from signal‐to‐interference‐plus‐noise ratio. The topology along with the algorithm provides a connection with a maximum coverage distance of 180 km and minimum data rate around 0.6 Mbps with 2 interconnection clusters. The presence of more interconnection clusters makes the coverage distance, data rate, and reliability greatly improved. Open source network tool Network Simulator 3 is used for the topology design, algorithm implementation, and simulations. The proposed topology and algorithm when implemented can be used to provide long‐distance sea communication with improved reliability and higher data rate.

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“…As shown earlier in Figure 1, in near-the-sea transmission, the signal mainly propagates through the evaporation duct. Compared to such an environment, the airborne propagations must pass Studies conducted in [3] show that for modeling channels in such an environment, special attention is paid to refraction caused by a possible evaporation duct, as well as a direct ray and sea surface-reflected ray. An evaporation duct affects frequencies around 1 GHz and higher.…”

Section: Introductionmentioning

confidence: 99%

Wireless Channel Models for Over-the-Sea Communication: A Comparative Study

Habib

Moh

2019

Applied Sciences

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Over the past few years, the modeling of wireless channels for radio wave propagation over the sea surface has drawn the attention of many researchers. Channel models are designed and implemented for different frequencies and communication scenarios. There are models that emphasize the influence of the height of the evaporation duct in the marine environment, as well as models that deal with different frequencies (2.5, 5, and 10 GHz, etc.) or the impact of various parameters, such as antenna height. Despite the increasing literature on channel modeling for the over-the-sea marine environment, there is no comprehensive study that focuses on key concepts that need to be considered when developing a new channel model, characteristics of channel models, and comparative analysis of existing works along with their possible improvements and future applications. In this paper, channel models are discussed in relation to their operational principles and key features, and they are compared with each other in terms of major characteristics and pros and cons. Some important insights on the design and implementation of a channel model, possible applications and improvements, and challenging issues and research directions are also discussed. The main goal of this paper is to present a comparative study of over-the-sea channel models for radio wave propagation, so that it can help engineers and researchers in this field to choose or design the appropriate channel models based on their applications, classification, features, advantages, and limitations.

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Key Considerations in the Modeling of Tropical Maritime Microwave Attenuations

Cited by 15 publications

References 16 publications

Point-to-Point Channel Modelling Within Offshore Wind Farms

Point-to-Point Channel Modelling Within Offshore Wind Farms

A novel sea communication topology and IP routing algorithm by using LTE and WMN in NS‐3

Wireless Channel Models for Over-the-Sea Communication: A Comparative Study

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