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Abstract
Modern observation systems can be composed by heterogeneous entities (e.g., buoys, USVs, UAVs, on-shore sensors, etc.) that rely on dependable communications for coordination and data collection, often provided by over-water radio-frequency (RF) links. In tide-affected water bodies, RF links at a fixed height from the shore can experience the so-called tidal fading, a cyclic time-varying tide-induced interference. To mitigate it, the classical space-diversity reception technique (i.e., the use of two or more receiver antennas positioned at different heights) is often applied, commonly combined with the consideration of having one of the antennas at the largest possible height. Yet, this approach does not always ensure the best performance. In this work, we focus on static over-water links of short-to-medium-range distances that use antennas installed at a few meters above surface. We leverage the geometrical basis of the two-ray propagation model to investigate the optimal single-antenna height design that minimizes overall average path losses over a given tidal range. We then extend this analysis to incorporate a second receiver antenna and identify its optimal antenna height. Analytical results show that our method considerably outperforms the more classical approach, thus enabling superior (average) link capacities.
Original language | English |
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Title of host publication | 2020 Global Oceans 2020 |
Subtitle of host publication | Singapore - U.S. Gulf Coast |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781728154466 |
DOIs | |
Publication status | Published - 5 Oct 2020 |
Event | 2020 Global Oceans: Singapore - U.S. Gulf Coast, OCEANS 2020 - Biloxi, United States Duration: 5 Oct 2020 → 30 Oct 2020 |
Publication series
Name | 2020 Global Oceans 2020: Singapore - U.S. Gulf Coast |
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Conference
Conference | 2020 Global Oceans: Singapore - U.S. Gulf Coast, OCEANS 2020 |
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Country/Territory | United States |
City | Biloxi |
Period | 5/10/20 → 30/10/20 |
Keywords
- marine communication
- maritime networks
- oversea paths
- space-diversity
- tidal fading
- tides
- two-ray
ASJC Scopus subject areas
- Oceanography
- Automotive Engineering
- Instrumentation
- Signal Processing
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Dive into the research topics of 'Optimal antenna-height design for improved capacity on over-water radio links affected by tides'. Together they form a unique fingerprint.Activities
- 1 Visiting an external academic institution
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Research Centre in Real-Time and Embedded Computing Systems (CISTER) - Porto, Portugal
GUTIERREZ GAITAN, M. (Visiting researcher)
Feb 2018 → Feb 2023Activity: Visiting an external institution types › Visiting an external academic institution