Browsing by Author "Huang, C. -C."

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Low-complexity time-domain linear equaliser for single-carrier block transmissions
(2013-09-12)
Ma, C. -Y.
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Huang, C. -C.
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傳播研究所
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Institute of Communication Studies
Traditionally, frequency-domain equalisers have been used to equalise the single-carrier block transmission (SCBT) signals. However, to support the frequency-domain equaliser, two fast Fourier transform modules are required, which will increase the circuit complexity and chip area. A low-complexity time-domain linear equaliser for SCBT is proposed, which is less complicated than conventional frequency-domain equalisers, at the expense of an acceptable degradation in performance. For instance, for 60 GHz conference room non-line-of-sight channels, the complexity can be reduced by half at the expense of a 1.5 dB performance loss.
THE MESH PROPERTY OF THE STEEL INVOLUTE CYLINDRICAL WORM WITH A PLASTIC INVOLUTE HELICAL GEAR
(2014-04-01)
Liu, Z. -Y.
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Huang, C. -C.
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Hao, Y. -H.
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Lin, C. -C.
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機械工程學系
With the increasing use of plastic gears in substitution of conventional steel ones, a plastic involute helical gear has been introduced to engage with a steel involute worm thus forming a novel plastic-steel worm-gear pair. The geometry and kinematics of this kind of worm-gear pair has been established first to derive its meshing properties which have been further verified by the finite element simulation. And it turns out that the contact area of this worm-gear pair is a point or an ellipse instead of a line. Further, a discrete dynamic model has been applied to investigate the dynamic transmission of motion and power of this worm-gear pair through the dynamic mesh force and the driven plastic involute helical gear. And the effects of angular and distance assembling errors have also been included.