This paper introduces a 2 0 visual servoing technique for the station keepiirg of an unmanned underwater vehicle (UUV) with respect to planar targets on the sea bed. The underwater vehicle is subject to sea current disturbances which make it drift from its desired position. Feature points from unmarked objects are extracted and tracked with a sparse feature tracker developed in-house [I]. The s...

This paper investigates channel pre-equalization for the up-link of multi-carrier code division multiple access (MC-CDMA) mobile cellular systems. This technique solves the crucial problem of up-link channel estimation by keeping the high spectral efficiency of MC-CDMA with no need of pilot symbols. We study an optimisation criterion based on the maximization of the signal over interference plu...

In this paper, a novel and practical transmission scheme for a Multiple Input Multiple Output–Orthogonal Frequency Division Multiple Access (MIMO-OFDMA) relaybased network is proposed and evaluated.We coin the termVirtual Maximum Ratio Transmission (VMRT) for the schemewhich obtains diversity and array gain at both links in a two-hop transmission, while keeping the complexity low. Besides, the ...

Many animals maneuver superbly underwater using their pectoral appendages. These animals range from sunfish, which have flexible, low aspect ratio fins, to penguins, which have relatively stiff, high aspect ratio wings. Biorobotics is a means of gaining insight into the mechanisms these animals use for maneuvering. In this study, experiments were carried out with models of abstracted penguin wi...

A remote synchronization system for the on-board crystal oscillator (RESSOX) of the QZSS is proposed. Aimed at offering an alternative architecture for the classic GPS time-keeping system (TKS), the proposed system consists of a synchronization framework where an ultrastable atomic clock, localized at the ground station, is kept synchronized to a second time reference, a voltage-controlled crys...

In the past decades, states have utilized weigh-in-motion (WIM) technology to reduce delay and increase enforcement of overweight vehicles. Usually a threshold value is used to filter and sort the trucks by weight. If the WIM reading of a truck is over the threshold, the truck would be sent to a static scale for further inspection. To fully utilize the WIM technology and enhance the operational...

Cloud radio access network is one of the most promising cellular networks for the next generation of mobile networks. The basic idea of cloud RAN (radio access network) is virtualizing and centralizing the intelligent part of the base station, the base band unit, and keeping remote radio heads on cell site enabling a centralized processing and management. Offloading data computation to edge clo...