Proceedings ArticleDOI
Decision tree-based adaptive modulation for underwater acoustic communications
Konstantinos Pelekanakis,Luca Cazzanti,Giovanni Zappa,Joao Alves +3 more
- pp 1-5
TLDR
In this paper, a decision tree is trained to associate channels with modulation schemes under a target bit error rate (BER) and all relevant channel characteristics (e.g., multipath spread, Doppler spread and signal-to-noise ratio).Abstract:
Underwater acoustic channels are characterised by non-stationary fading statistics and consequently, a modulation scheme optimally designed for a specific fading model will underperform when the channel statistics change. This issue can be alleviated by using adaptive modulation, i.e., the matching of the modulation scheme to the conditions of the acoustic link. However, selecting signals from a broad range of bit rates is tedious because one needs to know the relationship between the bit error rate (BER) and all relevant channel characteristics (e.g., multipath spread, Doppler spread and signal-to-noise ratio). In this work, this relationship is extracted from large amounts of transmissions of a phase-shift keying (PSK) single-carrier modem. In particular, a decision tree is trained to associate channels with modulation schemes under a target BER. The effectiveness of the proposed tree method is demonstrated by post-processing data from two experimental links off the coast of Faial Island, Azores, Portugal.read more
Citations
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Journal ArticleDOI
Cooperative robotic networks for underwater surveillance: an overview
Gabriele Ferri,Andrea Munafo,Alessandra Tesei,Paolo Braca,Florian Meyer,Konstantinos Pelekanakis,Roberto Petroccia,Joao Alves,Christopher Strode,Kevin D. LePage +9 more
TL;DR: The main thrust of this study is to review the underwater surveillance scenario within a framework of four research areas: (i) underwater robotics, (ii) acoustic signal processing, (iii) tracking and distributed information fusion, and (iv) underwater communications networks.
Journal ArticleDOI
Toward the Development of Secure Underwater Acoustic Networks
TL;DR: A hybrid architecture that incorporates aspects of physical layer security, software defined networking, node cooperation, cross-layering, context-awareness, and cognition is outlined.
Journal ArticleDOI
Reinforcement Learning-Based Adaptive Modulation and Coding for Efficient Underwater Communications
TL;DR: A reinforcement learning-based adaptive modulation and coding scheme based on the network states such as the quality of service requirement of the sensing message, the previous transmission quality, and the energy consumption can improve the throughputs and reduce the BER with less energy consumption.
Proceedings ArticleDOI
Moving JANUS forward: A look into the future of underwater communications interoperability
Joao Alves,Thomas C. Furfaro,Kevin D. LePage,Andrea Munafo,Konstantinos Pelekanakis,Roberto Petroccia,Giovanni Zappa +6 more
TL;DR: The current status of JANUS is reported and a first look at possible routes for evolution of this soon-to-be standard is looked at.
Journal ArticleDOI
A survey on energy efficiency in underwater wireless communications
TL;DR: In this article , the authors provide a comprehensive literature review on existing contributions in the area of energy-efficient Underwater Wireless Communication (UWC) and highlight future research directions in the field and challenges related to the widespread adoption of the Internet of Underwater Things.
References
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Classification and Regression Trees.
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TL;DR: In this paper, the authors describe the important ideas in these areas in a common conceptual framework, and the emphasis is on concepts rather than mathematics, with a liberal use of color graphics.
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TL;DR: This article gives an introduction to the subject of classification and regression trees by reviewing some widely available algorithms and comparing their capabilities, strengths, and weakness in two examples.
Digital communications
TL;DR: This month's guest columnist, Steve Bible, N7HPR, is completing a master’s degree in computer science at the Naval Postgraduate School in Monterey, California, and his research area closely follows his interest in amateur radio.
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The Elements of Statistical Learning: Data Mining, Inference, and Prediction
TL;DR: This section will review those books whose content and level reflect the general editorial poltcy of Technometrics.