Results 81 to 90 of about 1,504,963 (315)
, 2010 In a recent work, Y.D. Chong et al. [Phys. Rev. Lett. {\bf 105}, 053901 (2010)] proposed the idea of a coherent perfect absorber (CPA) as the time-reversed counterpart of a laser, in which a purely incoming radiation pattern is completely absorbed by a ...
A. E. Siegman +2 more
core +1 more source
Cube-Split: A Structured Grassmannian Constellation for Non-Coherent SIMO Communications [PDF]
IEEE Transactions on Wireless Communications, 2019 In this paper, we propose a practical structured constellation for non-coherent communication with a single transmit antenna over Rayleigh flat and block fading channel without instantaneous channel state information.
K. Ngo +3 more
semanticscholar +1 more source
Bidirectional coherent classical communication [PDF]
Quantum Information and Computation, 2005 A unitary interaction coupling two parties enables quantum or classical communication in both the forward and backward directions. Each communication capacity can be thought of as a tradeoff between the achievable rates of specific types of forward and backward communication.
Harrow, Aram W., Leung, Debbie W.
openaire +3 more sources
Advanced Materials Technologies, EarlyView.Fluorinated graphene has opened new opportunities for real‐world applications; however, its working and thermal stability are key issues for practical use. This study successfully demonstrates the stability of a fluorinated graphene‐based photodetector, achieved through a graphene, fluorinated graphene heterostructure (Gr/F‐Gr HS).
Mukesh Kumar Thakur +11 more
wiley +1 more source
Nature Communications, 2022 High-spectral-purity frequency-agile room-temperature THz sources are foundational elements for imaging, sensing, metrology, and communications. Here a parametric oscillator-photomixer chip with coherent 2.8-octave tunable THz radiation is achieved.
Wenting Wang +9 more
doaj +1 more source
New bounds on RAKE structures for DS-CDMA over frequency-selective Rayleigh fading channels [PDF]
, 1996 An upper bound is derived for the probability of error in an asynchronous binary direct-sequence spread-spectrum multiple-access communications system operating over frequency selective Rayleigh fading channels. A coherent RAKE receiver with predetection
Calvo Zorrilla, Sergio +1 more
core +1 more source
Satellite Downlink Coherent Laser Communications
, 2016 Peer ...
Belmonte Molina, Aniceto, Kahn, J. M.
openaire +3 more sources
Anti‐Slip Material‐Based Strategies and Approaches
Advanced Materials Technologies, EarlyView.This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani +3 more
wiley +1 more source
Optical communications through highly scattering channels using the coherence-rank
APL PhotonicsIn optical communications, logical bits are encoded in physical degrees-of-freedom (DoFs) of the electromagnetic field. Consequently, optical scattering in a communications channel compromises the information transfer.
Mitchell Harling +3 more
doaj +1 more source
IEEE Photonics Journal, 2017 Beams carrying orbital angular momentum (OAM) are very helpful in enhancing the information carrying capacity in free-space optical communications. However, atmospheric turbulence and energy attenuation will seriously affect communication quality and ...
Xiaoke Zhang +11 more
doaj +1 more source