Results 311 to 320 of about 6,450,359 (383)

Hyper-spectral imaging with up-converted mid-infrared single-photons. [PDF]

Sci Rep
Meng Y, Jørgensen AA, Rasmussen AN, Høgstedt L, Friis SMM, Lassen M.   +5 more
europepmc   +1 more source

High-efficiency active membrane metasurfaces. [PDF]

Sci Adv
Fan J, Zhou Y, Xue Z, Xu G, Chen J, Xing H, Cong L.   +6 more
europepmc   +1 more source

Spectral efficiency for cognitive radio

, 2007
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Spectral Efficiency

New Electronics, 2020
Data consumption is continually increasing but spectrum is not infinite. Danish Aziz talks to Charlotte Hathway about the RF and microwave technologies Analog Devices has developed to bridge that gap
Charlotte Hathway
semanticscholar   +3 more sources

Efficient Spectral Methods for PDEs with Spectral Fractional Laplacian

Journal of Scientific Computing, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Changtao Sheng, Duo Cao, Jie Shen
openaire   +1 more source

Area Spectral Efficiency

Encyclopedia of Wireless Networks, 2020
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Spectral Efficiency Comparison Between Analog and Digital RoF for Mobile Fronthaul Transmission Link

Journal of Lightwave Technology, 2020
Mobile fronthaul requires an efficient transfer of radio signals between cell-site remote radio heads (RRHs) and a centralized baseband unit (BBU) to satisfy diverse requirements on system capacity, latency, and cost. Both analog radio-over-fiber (A-RoF)
Honglin Ji, Chuanbowen Sun, W. Shieh
semanticscholar   +1 more source

Spectrally Efficient Optical Communications

Asia Communications and Photonics Conference 2015, 2015
The paper reviews most diffuse techniques used for increasing spectral efficiency in optical communication, considering different network segments. Time-frequency packing will be described, and compared to Nyquist wavelength-division multiplexing and orthogonal frequency-division multiplexing.
POTI', LUCA, MELONI, GIANLUCA, FRESI, Francesco, MALACARNE, Antonio   +3 more
openaire   +2 more sources

Spectrally efficient noncoherent communication

IEEE Transactions on Information Theory, 2002
Summary: This paper considers noncoherent communication over a frequency-nonselective channel in which the time-varying channel gain is unknown a priori, but is approximately constant over a coherence interval. Unless the coherence interval is large, coherent communication, which requires explicit channel estimation and tracking prior to detection ...
Warrier, Dilip, Madhow, Upamanyu
openaire   +1 more source