Results 51 to 60 of about 259,965 (163)

Caching Gain in Wireless Networks with Fading: A Multi-User Diversity Perspective

, 2013
We consider the effect of caching in wireless networks where fading is the dominant channel effect. First, we propose a one-hop transmission strategy for cache-enabled wireless networks, which is based on exploiting multi-user diversity gain.
Khalaj, Babak Hossein, Shah-Mansouri, Hamed, Shariatpanahi, Seyed Pooya   +2 more
core   +1 more source

Long-term stability of fibre-optic transmission for multi-object spectroscopy

, 2012
We present an analysis of the long-term stability of fibre-optic transmission properties for fibre optics in astronomy. Data from six years of operation of the AAOmega multi-object spectrograph at the Anglo-Australian Telescope is presented.
Brough, S., Cannon, R. D., Sharp, R.
core   +1 more source

Degrees of Freedom and Achievable Rate of Wide-Band Multi-cell Multiple Access Channels With No CSIT

, 2017
This paper considers a $K$-cell multiple access channel with inter-symbol interference. The primary finding of this paper is that, without instantaneous channel state information at the transmitters (CSIT), the sum degrees-of-freedom (DoF) of the ...
Jeon, Yo-Seb, Lee, Namyoon, Tandon, Ravi
core   +1 more source

Optical frequency comb generation from a monolithic microresonator

, 2007
Optical frequency combs provide equidistant frequency markers in the infrared, visible and ultra-violet and can link an unknown optical frequency to a radio or microwave frequency reference.
A Schliesser, A. Schliesser, AA Savchenkov, AM Weiner, C Gohle, DJ Jones, DK Armani, G Steinmeyer, IH Agha, J Reichert, J Ye, J Ye, KJ Vahala, M Kourogi, MA Foster, MH Dunn, MJ Thorpe, MT Murphy, O. Arcizet, P Kubina, P. Del’Haye, R. Holzwarth, RH Stolen, RJ Jones, RK Chang, SA Diddams, SA Diddams, SM Spillane, SM Spillane, ST Cundiff, T Carmon, T Udem, T. J. Kippenberg, T. Wilken, TJ Kippenberg, U Keller   +35 more
core   +1 more source

Adaptive and Iterative Multi-Branch MMSE Decision Feedback Detection Algorithms for MIMO Systems [PDF]

, 2013
In this work, decision feedback (DF) detection algorithms based on multiple processing branches for multi-input multi-output (MIMO) spatial multiplexing systems are proposed.
de Lamare, R. C.
core  

Design and simulation of 1.28 Tbps dense wavelength division multiplex system suitable for long haul backbone [PDF]

, 2018
Wavelength division multiplex (WDM) system with on / off keying (OOK) modulation and direct detection (DD) is generally simple to implement, less expensive and energy efficient. The determination of the possible design capacity limit, in terms of the bit
Amusan, Akinwumi, Amusan, Elizabeth
core   +1 more source

A Compact Source for Quantum Image Processing with Four-wave Mixing in Rubidium-85

, 2012
We have built a compact light source for bright squeezed twin-beams at 795\,nm based on four-wave-mixing in atomic $^{85}$Rb vapor. With a total optical power of 400\,mW derived from a free running diode laser and a tapered amplifier to pump the four ...
Glasser, Ryan T., Lett, Paul D., Vogl, Ulrich   +2 more
core   +1 more source

Failure Risk Investigation of Transmission Tower-line System Under Sequential Earthquake Considering Input Directionality

工程科学与技术
ObjectiveTransmission tower-line structures are representative spatial distribution systems. They typically span hundreds or even thousands of kilometers and inevitably traverse regions with high seismic intensities.
LIU Juncai, DONG You
doaj  

Experimental validation of an analytical model for nonlinear propagation in uncompensated optical links [PDF]

, 2011
A. Carena, A. Nespola, Alfiad, Chen, Curri, D. Zeolla, E. Torrengo, F. Forghieri, G. Bosco, Grellier, Louchet, Marcuse, Nazarathy, P. Poggiolini, Poggiolini, R. Cigliutti, Tang, V. Curri   +17 more
core   +1 more source

Co-transmission of radio frequency reference and data signal over multi-core fiber. [PDF]

Sci Rep
Liu L, Liu F, Jin Z, Gui Y, Shieh W.
europepmc   +1 more source