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Development of a TDM/FDM Transmultiplexer
IEEE Transactions on Communications, 1978Recently, digital systems such as digital telephone switching systems and digital transmission paths are being introduced more and more into communications networks in which signals are handled with Time Division Multiplex (TDM). There still exists, on the other hand, a number of analog transmission paths in which signals are multiplexed with Frequency
Fumio Takahata +3 more
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Journal of Wind Engineering and Industrial Aerodynamics, 1993
Publisher Summary This chapter focuses on the current research by the FDM. The main objectives of current research are: (1) with regard to the oscillating bluff cylinders, the relation of the vortex motions and the unsteady aerodynamic forces are clarified numerically; (2) discuss the mechanism of the unstable oscillation and its occurrence by ...
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Publisher Summary This chapter focuses on the current research by the FDM. The main objectives of current research are: (1) with regard to the oscillating bluff cylinders, the relation of the vortex motions and the unsteady aerodynamic forces are clarified numerically; (2) discuss the mechanism of the unstable oscillation and its occurrence by ...
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A FDM anisotropic formulation for EEG simulation
2006 International Conference of the IEEE Engineering in Medicine and Biology Society, 2006Accurate head modeling is required to properly simulate bioelectric phenomena in 3-D as well as to estimate the 3-D bioelectric activity starting from superficial bioelectric measurements and 3-D imaging. Aiming to build an accurate and realistic representation of the volume conductor of the head, also the anisotropy of head tissues should be taken ...
BRUNO P +5 more
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Intricate shape prototypes obtained by FDM
International Journal of Material Forming, 2010Fused deposition modelling (FDM) is a filament based rapid prototyping system. FDM allows to build the components layer by layer by extruding a semi-molten thermoplastic polymer, thus allowing to overcome common drawbacks of the conventional machining. Complex shapes like curved shell-type structures (skull bones, turbine blades, marine propellers) can
BOSCHETTO, Alberto, VENIALI, Francesco
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Precoded Spectrally Efficient FDM system
21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2010Spectrally Efficient Frequency Division Multiplexing (SEFDM) system proposes enhanced spectrum utilization in contrast to Orthogonal Frequency Division Multiplexing system (OFDM). Spectral efficiency is increased by relaxing the orthogonality condition while maintaining the same transmission rate per individual channel, hence, for the same bandwidth ...
Safa Isam, Izzat Darwazeh
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Adaptive slicing for the FDM process revisited
2017 13th IEEE Conference on Automation Science and Engineering (CASE), 2017Adaptively computing the layer heights for 3D-printed parts has the potential to achieve high quality results while maintaining a reasonably short printing time. The basic concept, several error measures and variations of the algorithm have been around in the literature for two decades now, but never showed significant impact on widely used slicing ...
Florens Wasserfall +2 more
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Das Verbundprojekt FDM@HAW.rlp zielte auf den Aufbau und die langfristige Etablierung hochschulübergreifender FDM-Strukturen und -Services an den HAWn in RLP. Gemeinsam wurden effizient und ressourcenschonend spezifische Bedarfe der Forschenden identifiziert, sie wurden im qualitätsgesicherten Umgang mit Forschungsdaten über den gesamten ...
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