Results 21 to 30 of about 241,566 (298)
Long Distance Broadband Fiber Optical Beamforming Over 120 km
IEEE Access, 2021 With the development of the space exploration and satellite communications, the data transmission at broadband and long distance are in increasing demand.
Jichen Qiu +5 more
doaj +1 more source
Remote Sensing, 2021 Ground moving targets will typically be defocused because of the range migration (RM) and Doppler frequency migration (DFM) caused by the unknown relative motions between the platform of synthetic aperture radar (SAR) and the ground moving targets.
Jun Wan +6 more
doaj +1 more source
Phase-coherent lightwave communications with frequency combs [PDF]
, 2019 Fiber-optical networks are a crucial telecommunication infrastructure in society. Wavelength division multiplexing allows for transmitting parallel data streams over the fiber bandwidth, and coherent detection enables the use of sophisticated modulation ...
Andrekson, Peter A. +7 more
core +2 more sources
Signalling/IN Server architecture for a broadband SSP [PDF]
, 1998 This paper describes a Signalling/IN Server taking into account the adopted architectural and implementation solutions. The Signalling/IN Server takes part in a Broadband Service Switching Point realised in the framework of the European research project INSIGNIA (IN and B-ISDN Signalling Integration on ATM Platforms). The aim of the INSIGNIA project is
D. Blaiotta +4 more
openaire +1 more source
Broadband squeezing of quantum noise in a Michelson interferometer with Twin-Signal-Recycling
, 2009 Twin-Signal-Recycling (TSR) builds on the resonance doublet of two optically coupled cavities and efficiently enhances the sensitivity of an interferometer at a dedicated signal frequency.
André Thüring +15 more
core +1 more source
Broadband phase coherence between an ultrafast laser and an OPO using lock-to-zero CEO stabilization [PDF]
, 2012 The carrier-envelope-offset frequencies of the pump, signal, idler and related second-harmonic and sum-frequency mixing pulses have been locked to 0 Hz in a 20-fs-Ti: sapphire-pumped optical parametric oscillator, satisfying a critical prerequisite for ...
Leburn, Christopher G. +3 more
core +1 more source
Physical-Layer Security Analysis over M-Distributed Fading Channels
Entropy, 2019 In this paper, the physical layer security over the M-distributed fading channel is investigated. Initially, an exact expression of secrecy outage probability (SOP) is derived, which has an integral term. To get a closed-form expression, a lower bound of
Sheng-Hong Lin +4 more
doaj +1 more source
Iterative Time-Varying Filter Algorithm Based on Discrete Linear Chirp Transform
, 2018 Denoising of broadband non--stationary signals is a challenging problem in communication systems. In this paper, we introduce a time-varying filter algorithm based on the discrete linear chirp transform (DLCT), which provides local signal decomposition ...
Akan, Aydin +2 more
core +1 more source
Broadband Signalling Explained [PDF]
, 2001 From the Publisher: Broadband Signalling Explained is a comprehensive handbook. It introduces the basics and evolution of ATM (Asynchronous Transfer Mode) and provides an overview of the concepts of protocols and signalling. It identifies the standards and describes the international bodies responsible for producing them, including the ITU ...
openaire +1 more source
MicromachinesManipulating orthogonally polarized waves independently in a single metasurface is pivotal. However, independently controlling the phase shifts of orthogonally polarized waves is difficult, especially in the same frequency bands.
Shunlan Zhang +4 more
doaj +1 more source