Results 71 to 80 of about 4,672,975 (205)

Medium access control, error control and routing in underwater acoustic networks: a discussion on protocol design and implementation [PDF]

open access: yes, 2013
The journey of underwater communication which began from Leonardo’s era took four and a half centuries to find practical applications for military purposes during World War II.
Azad, Md. Saiful
core  

Research and Development of a Highly Reconfigurable OFDM MODEM for Shallow Water Acoustic Communication

open access: yesIEEE Access, 2019
Orthogonal frequency division multiplexing (OFDM) provides an effective approach to combat multipath with high bandwidth efficiency for underwater acoustic communication, thus design and implementation of acoustic OFDM MODEMs draw more and more attention.
Yuehai Zhou, Feng Tong
doaj   +1 more source

Arrival-based equalizer for underwater communication systems

open access: yes, 2012
Dissertação de Mestrado, Engenharia Electrónica e Telecomunicações, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2012One of the challenges in the present underwater acoustic communication systems is to combat the underwater channel e ects
Siddiqui, Salman Ijaz
core   +1 more source

Blind equalization for underwater communications [PDF]

open access: yes, 2014
Underwater wireless (sensor) networks would vastly improve man's ability to explore and exploit remote aquatic environments. Despite underwater sensor and vehicle technology being relatively mature, underwater communications is still a major challenge. The most challenging characteristics of the underwater acoustic communication channel are its low and
openaire   +3 more sources

A Lightweight Protocol Suite for Underwater Communication [PDF]

open access: yes2009 International Conference on Advanced Information Networking and Applications Workshops, 2009
A lightweight MAC and network layer protocol suite for underwater acoustic communication has been developed. The protocol suite covers the MAC layer, hop-by-hop acknowledgement, multi-hop routing and transmission and includes a network discovery and route generation module.
openaire   +2 more sources

Analysis and Simulation of Underwater Magneto-Inductive Communication Networks [PDF]

open access: yes
openUnderwater communication faces significant challenges due to the limitations of acoustic and optical systems in harsh aquatic environments.
ZIU, VANESA
core  

Underwater Sonography of Leg Veins [PDF]

open access: yes, 2018
Objectives: Hydrostatic compression (HC) occurring during body immersion is considered beneficial for venous return from the lower limbs. No study has evaluated the effects of HC on the veins of the lower limbs using duplex ultrasound (DU).
Evi Kalodiki   +12 more
core   +1 more source

Insurance for autonomous underwater vehicles [PDF]

open access: yes, 2007
The background and practice of insurance for autonomous underwater vehicles (AUVs) are examined. Key topics include: relationships between clients, brokers and underwriters; contract wording to provide appropriate coverage; and actions to take when an ...
Bose, N.   +3 more
core   +1 more source

Multi-Radio Multi-Channel Assignment Algorithm in Maritime Wireless Mesh Networks

open access: yesIEEE Access, 2019
The recent growth in the maritime industry stemming to increase in global commerce as well as searching for hydrocarbons at offshore locations, the high data rate and cost affordable maritime communication is acquired.
Junhua Xing   +5 more
doaj   +1 more source

TIME-VARYING DOPPLER COMPENSATION FOR UNDERWATER ACOUSTIC COMMUNICATION

open access: yes, 2017
This thesis focuses on time-varying Doppler compensation for underwater acoustic communications using an orthogonal frequency division multiplexing (OFDM) system.
Mirhedayati Roudsari, Seyedhabib
core  

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