Results 251 to 260 of about 396,378 (275)

Hybrid ARQ using Modulation Switching

VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009
Multilevel modulation schemes have variations in bit-reliabilities and each has different symbol reliabilities. Choosing the modulation scheme which has the greatest symbol reliability at target SNR on retransmissions offers more chances to get higher Hybrid ARQ performance by making the sum of total bit-reliabilities greater in the entire decoding ...
Bumsoo Park, Byung-Jae Kwak, Dong Seung Kwon   +2 more
openaire   +1 more source

Hybrid micromachined push-button switches

Proceedings of the Forty-Ninth IEEE Holm Conference on Electrical Contacts, 2003., 2004
We have begun to develop a new generation of micromachined membrane switches which incorporate a silicon membrane component and a standard PCB substrate. These new devices are expected to be both more economic and better suited for later handling by the user. The main problem in the development process is seen in joining both materials.
K. Hiltmann, E. Wolf, H. Sandmaier
openaire   +1 more source

Graceful switching in hybrid models

Proceedings of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference, 2009
Classical oscillators, such as the ideal pendulum and the harmonic oscillator, can be modeled as switching systems. In these models, the switching takes place in a “graceful” fashion when the rate of displacement is zero. Such examples raise the question of whether hybrid models with such “graceful” switching can be modeled using ordinary differential ...
Katerina Georgiou, Tryphon T. Georgiou
openaire   +1 more source

Hybrid optical matrix gate switches for photonic switching

11th International Conference on Integrated Optics and Optical Fibre Communications. 23rd European Conference on Optical Communications IOOC-ECOC97, 1997
Summary form only given. Recent progress of semiconductor optical amplifier (SOA) based optical switches by a selective MOVPE technique are reported. Hybrid switch matrices using packaged discrete SOAs are emphasized.
openaire   +1 more source

270-V Dc Hybrid Switch

IEEE Transactions on Components, Hybrids, and Manufacturing Technology, 1986
High-voltage direct current (dc) power is one of the most efficient, reliable, and lightweight methods to generate and distribute energy. This power system is not in common use today on aircraft or other weight- and reliability-sensitive applications because of difficulties in switching high-voltage dc power.
P. Theisen, S. Krstic, C. Chen
openaire   +1 more source

Graphene–metal hybrid plasmonic switch

Applied Physics Express, 2014
The optical properties of a graphene material are analyzed first and a novel graphene–metal hybrid plasmonic switching in the near-infrared band is demonstrated in this study. The proposed hybrid structure is composed of metal–insulator–metal (MIM) waveguides and a graphene material.
Fang Chen, Duanzheng Yao, Yanan Liu
openaire   +1 more source

Hybrid photonic switch matrix for sub-wavelength switching

2007 Photonics in Switching, 2007
Exploiting the wavelength-time-space switching in semiconductor optical amplifiers, a multi-terabit optical switch matrix capable of sub-wavelength switching has been demonstrated.
openaire   +1 more source

A hybrid optical switching approach

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), 2004
Optical circuit switching (OCS) is a sophisticated technology widely deployed in current optical networks, and has many advantages in the transport of stable and long-duration traffic flows. However, it is not suitable for bursty data traffic. On the other hand, an alternative technology, optical burst switching (OBS), well addresses bursty IP traffic ...
null Chunsheng Xin, null Chunming Qiao, null Yinghua Ye, null Sudhir Dixit   +3 more
openaire   +1 more source

SOFTLY SWITCHED HYBRID PREDICTIVE CONTROL

IFAC Proceedings Volumes, 2006
Abstract In operational control of hybrid systems, control objectives often change with current operating conditions and switching among a number of control strategies is then inevitable. The proposed softly switched hybrid predictive control utilizes mixed integer programming techniques and achieves better switching transient performance both in ...
Jingsong Wang, Mietek A. Brdys
openaire   +1 more source

Optical Hybrid Switching – Combined Optical Burst Switching and Optical Circuit Switching

2004
In this paper, we propose a new optical hybrid switching technique which combined Optical Burst Switching (OBS) and Optical Circuit Switching (OCS) using flow classification. In particular, this switching technique classifies incoming IP traffic flows into short-lived and long-lived flows for Quality of Service (QoS) provisioning according to traffic ...
Lee, G.M., Choi, J.K. Choi, JunKyun, Wydrowski, B., Zukerman, M., Kang, C.-H.   +4 more
openaire   +1 more source