Results 41 to 50 of about 28,354 (309)
, 2007 We examine both differentially coherent and non-coherent code acquisition schemes designed for the multiple transmit/receive antenna assisted Multi-Carrier (MC)-DS-CDMA downlink, when communicating over uncorrelated Rayleigh channels.
SeungHwan Won +3 more
core +1 more source
Bandwidth-Efficient Wireless Multimedia Communications [PDF]
, 1998 Commencing with the brief history of mobile communications and the portrayal of the basic concept of wireless multimedia communications, the implications of Shannon’s theorems regarding joint source and channel coding for wireless communications are ...
L. Hanzo, Hanzo, L.
core +1 more source
Applied Sciences, 2019 Coherent in-phase quadrature (IQ) transponders are ubiquitous in the long-haul and the metro optical networks. During the transmission, the coherent signal experiences a bandwidth narrowing effect after passing through multiple reconfigurable optical add-
Qiang Wang +3 more
doaj +1 more source
Advanced Materials Technologies, EarlyView.Extrusion‐based bioprinting (EBB) has emerged as a versatile biofabrication platform capable of precisely depositing bioinks composed of biomaterials, cells, and bioactive agents to generate patient‐specific, biomimetic skin constructs. This paper presents a state‐of‐the‐art and forward‐looking overview of EBB for wound healing, encompassing printing ...
Hien‐Phuong Le +4 more
wiley +1 more source
Broadband exchange by coherent multi-carrier switching
, 2022 S.196-207A proposed high capacity optical coherent multi-carrier (CMC) switching node for a broadband application is described. The switching of signals is performed in the optical domain by routing the carriers through broadband and selective stars, by ...
Keil, N. +6 more
core
Lambertian source modelling of free space optical ground-to-train communications [PDF]
, 2012 There is a increasing demand for high speed data services while travelling on trains and other means of public transportation. Hence, an alternative technology to radio frequency (RF) communications called free space optics (FSO) could be used to provide
Ghassemlooy, Zabih +9 more
core +1 more source
Modular coherent photonic-aided payload receiver for communications satellites
Nature Communications, 2019 Satellite communications shall only thrive if being able to compete with fibre in both bandwidth and cost. Here, the authors demonstrate that a coherent and yet modular photonic-aided payload is feasible, paving the way for a new generation of ...
Vanessa C. Duarte +15 more
doaj +1 more source
Multiband Real-Time Coherent Optical OFDM Reception up to 110 Gb/s with 600-km Transmission
IEEE Photonics Journal, 2010 We demonstrate field-programmable gate array (FPGA)-based multiband orthogonal frequency-division multiplexing (OFDM) signal reception after 600-km standard single-mode fiber (SSMF) transmission and 400-ps differential-group delay (DGD) at 110-Gb/s.
Simin Chen, Yiran Ma, William Shieh
doaj +1 more source
Encryption in phase space for classical coherent optical communications
Scientific Reports, 2023 Optical layer attacks on optical fiber communication networks are one of the weakest reinforced areas of the network, allowing attackers to overcome security software or firewalls when proper safeguards are not put into place.
Adrian Chan +5 more
doaj +1 more source
Full-duplex quantum coherent communication [PDF]
2019 21st International Conference on Transparent Optical Networks (ICTON), 2019 High bandwidth requirements for data communications are currently being met by classical coherent communication using multi-level modulation of amplitude and phase of light. Alternatively, down at the level of quantum signals, coherent communication enables establishment of cryptographic keys between two legitimate users, and shows higher key exchange ...
Kumar, Rupesh, Spiller, Tim
openaire +2 more sources