Results 31 to 40 of about 1,589,013 (282)
Distributed Transmit Beamforming without Phase Feedback
EURASIP Journal on Wireless Communications and Networking, 2010 Phase feedback and adjustment between wireless nodes greatly reduce the power efficiency of distributed beamforming. In this paper, we propose a distributed transmit beamforming method without any phase feedback between nodes. The concept of our approach
Chen Wang +4 more
doaj +2 more sources
Control limitations from distributed sensing: theory and Extremely Large Telescope application [PDF]
, 2013 We investigate performance bounds for feedback control of distributed plants where the controller can be centralized (i.e. it has access to measurements from the whole plant), but sensors only measure differences between neighboring subsystem outputs ...
Sarlette, Alain, Sepulchre, Rodolphe
core +1 more source
WiMedia Distributed Routing Protocol Based on Link Cost Feedback [PDF]
Jisuanji gongcheng, 2020 In the Ultra Wide Band (UWB) distributed media access control protocol,when the DRP reserved block does not send all data frames,the relay device cannot send the received data frames from the source device in the current DRP policy until the next DRP ...
HE Rongyi, WANG Xiaoqun, CHEN Kaifeng
doaj +1 more source
Photonics, 2019 The extension of the available spectral range covered by quantum cascade lasers (QCL) would allow one to address new molecular spectroscopy applications, in particular in the long wavelength domain of the mid-infrared.
Hoang Nguyen Van +5 more
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Optimisation of distributed feedback laser biosensors [PDF]
, 2007 A new integrated optical sensor chip is proposed, based on a modified distributed- feedback (DFB) semiconductor laser. The semiconductor layers of different refractive indices that comprise a laser form the basis of a waveguide sensor, where changes in ...
Coote, J, Reddy, Subrayal M, Sweeney, SJ
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Low-threshold organic laser based on an oligofluorene truxene with low optical losses [PDF]
, 2009 A blue-emitting distributed feedback laser based on a star-shaped oligofluorene truxene molecule is presented. The gain, loss, refractive index, and (lack of) anisotropy are measured by amplified spontaneous emission and variable-angle ellipsometry.
Dawson, M.D. +8 more
core +1 more source
Limited-Feedback-Based Channel-Aware Power Allocation for Linear Distributed Estimation [PDF]
, 2013 This paper investigates the problem of distributed best linear unbiased estimation (BLUE) of a random parameter at the fusion center (FC) of a wireless sensor network (WSN).
Fanaei, Mohammad +2 more
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Two-Segment Gain-Coupled Distributed Feedback Laser
IEEE Photonics Journal, 2018 A two-segment regrowth-free gain-coupled distributed feedback (DFB) laser monolithically integrated different gain contrast segments was proposed, realizing both wavelength-tunable (5 nm) and wavelength stabilization characteristics, controlled by a ...
Feng Gao +11 more
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Gain-distributed feedback filters [PDF]
Journal of Lightwave Technology, 1995 Equivalent circuits are developed for gain-distributed feedback filters. The filters can be tuned by endloading. Side-coupling of the filters to a signal waveguide results in channel-dropping filters. These active filters suppress undesired resonances more effectively than passive filters. >
H.A. Haus, M.J. Khan
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Monolithic quantum-dot distributed feedback laser array on silicon [PDF]
, 2018 Electrically-pumped lasers directly grown on silicon are key devices interfacing silicon microelectronics and photonics. We report here, for the first time, an electrically-pumped, room-temperature, continuous-wave (CW) and single-mode distributed ...
Chen, Siming +14 more
core +4 more sources