Measurements and models for radio path loss and penetration loss in and around homes and trees at 5.85 GHz

Durgin, Gregory D.; Rappaport, Theodore S.; Xu, Hao

doi:10.1109/26.729393

Cited by 249 publications

(132 citation statements)

References 17 publications

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“…However, averaging the received power values along 20 wavelength circular track using 250 power samples yields a reliable estimation of the local average power independent of signal bandwidth [10]. Average of the received power values in Watts is used for all path loss estimations.…”

Section: Measurement Proceduresmentioning

confidence: 99%

On the Use of Wireless Technologies for Shipboard Monitoring Systems

Kdouh

Brousseau

Zaharia

et al. 2013

Wireless Pers Commun

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Current shipboard monitoring systems use extensive lengths of cables to connect sensors to control units. Replacing wired connections by wireless ones may be an efficient solution to reduce the ship weight and cost. Ships are characterized by a specific metallic environment which can severely decrease the efficiency of wireless networks due to signal attenuation and multipath effects. In this paper, we present a feasibility study of a Wireless Sensor Network (WSN) using ubiquitous technologies on board vessels. A measurement campaign has been conducted on board a ferry to investigate the radio propagation challenges of wireless communications in this particular environment. Path loss models have been obtained for typical shipboard environments.Engineering rules concerning the placement and the number of communication nodes needed to cover the decks and maintain the network connectivity have been determined. Based on these results, an IEEE 802.15.4 compliant WSN has been tested on board the same ferry. Sensor nodes have been placed on the four decks of the ferry and the base station has been placed in the control room located in the bottom deck. Results show an excellent reliability with respect to transmission ratio of sensor nodes and a significant connectivity between nodes located in different compartments and decks separated by metallic watertight doors. Therefore, many research groups have started to investigate the possibility to replace the huge amount of cables by wireless connections using ubiquitous technologies. In [2], authors explore the feasibility of wireless communications for both intra-and inter-compartment shipboard communication within various naval vessels. In [3], it has been demonstrated that the radio propagation in large shipboard areas might be characterized by almost a free space law, while no path loss model has been found for corridors. In Moreover, multipath effects leading to multiple delayed copies of the transmitted signal at the receiver may also decrease the radio communication data rate within ships. These characteristics make difficult the wireless communication between nodes placed in different rooms or different decks. Therefore, an EM propagation study must be performed on board a vessel before network deployment. This study is necessary in order to verify the feasibility of inter-compartments and inter-decks wireless communication and to efficiently place the nodes to have a good network connectivity. In this paper, a complete feasibility study of a WSN on board a ferry is presented. First, an EM propagation study is performed in three typical environments on board the ferry. Path loss models are determined and different communication configurations such as communication between different rooms or different decks are considered. The results of these measurements are then used to determine some engineering rules concerning the location and the number of nodes needed to ensure full radio coverage of the ship and whole network connectivity. Secondly, a WSN based on...

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Section: Measurement Proceduresmentioning

confidence: 99%

On the Use of Wireless Technologies for Shipboard Monitoring Systems

Kdouh

Brousseau

Zaharia

et al. 2013

Wireless Pers Commun

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“…Although material parameters and incidence angles affect losses in a wireless channel, a constant 6 dB reflection loss (same as in [15]) and a constant 4.6 dB transmission (penetration) loss (the loss for plaster board in [1]) are assumed. The power contribution of each ray, in dBW, is calculated according to the model developed in [16]:…”

Section: Ray Tracing Propagation Modelmentioning

confidence: 99%

S<sup>4</sup>W: globally optimized design of wireless communication systems

Verstak

Watson

et al. 2002

Proceedings 16th International Parallel and Distributed Processing Symposium

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“…This makes the mobile radio channel challenging as compared to those reported in [4][5][6][7]9], where most of the research works focus on the investigations of LoS radio-wave propagations in maritime environments. The NLoS propagations over the maritime environments are also different from those in urban areas [15,16] and forested areas [17,18] since the blockage in the maritime environment is caused by large metallic bodies. Therefore, it is of great interest and importance to investigate the NLoS maritime mobile radio channel in the 5 GHz band experimentally.…”

Section: Introductionmentioning

confidence: 99%

Stand-Off Distances for Non-Line-of-Sight Maritime Mobile Applications in 5 GHZ Band

Lee¹,

Dong²,

Meng³

2013

PIER B

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Abstract-Non-line-of-sight (NLoS) maritime mobile radio channel in 5 GHz band is experimentally investigated in this paper through wideband channel soundings.During the measurements, the transmitter was installed onboard a speed boat, while the receiver was placed on the roof top of a building on shore. Different types of cargo ships anchored off the east coast of Singapore were examined as obstructions for the NLoS propagations. Besides power delay profile (PDP), stand-off distance is introduced in this work to analyze the NLoS propagations associated with three different types of cargo ships. The measured PDPs and stand-off distances are found to be comparable qualitatively with the simulated results using 3-D ray tracing. The reported information is found to be useful for military applications such as unmanned surface vehicles (USVs) in maritime environments or surveillance.

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Measurements and models for radio path loss and penetration loss in and around homes and trees at 5.85 GHz

Cited by 249 publications

References 17 publications

On the Use of Wireless Technologies for Shipboard Monitoring Systems

On the Use of Wireless Technologies for Shipboard Monitoring Systems

S<sup>4</sup>W: globally optimized design of wireless communication systems

Stand-Off Distances for Non-Line-of-Sight Maritime Mobile Applications in 5 GHZ Band

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