Results 51 to 60 of about 6,450,359 (383)
Characterization of wavelength interleaving in radio-over-fiber systems employing WDM/SCM [PDF]
, 2006 A radio-over-fiber (RoF) distribution system incorporating both sub-carrier multiplexing and wavelength division multiplexing (WDM) technologies is presented. This signal is directly modulated onto three high-speed lasers.
A. Kaszubowska +10 more
core +1 more source
ACM Transactions on Graphics, 2019 We present a simple and efficient method for refining maps or correspondences by iterative upsampling in the spectral domain that can be implemented in a few lines of code. Our main observation is that high quality maps can be obtained even if the input correspondences are noisy or are encoded by a small number of coefficients in a spectral basis.
Melzi, Simone +5 more
openaire +4 more sources
Comparison of Spectral Efficiency Techniques in Device-to-Device Communication for 5G
IEEE Access, 2019 Future generation networks will accommodate a large amount of data traffic and lower latency. In order to meet these demands, it is essential to look over current spectral use or introduce new frequency bands. Introduction of new frequency bands requires
J. Iqbal +5 more
semanticscholar +1 more source
Spectral Efficiency Optimization For Millimeter Wave Multiuser MIMO Systems [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2018 As a key enabling technology for 5G wireless, millimeter wave (mmWave) communication motivates the utilization of large-scale antenna arrays for achieving highly directional beamforming.
Qingjiang Shi, Mingyi Hong
semanticscholar +1 more source
Joint Processing of Pilot and Data for Massive MIMO Systems in Ricean Fading Channels
IEEE Access, 2019 Besides the pilot symbols, the received data signals also contain some extra channel state information (CSI), which can be exploited to further improve the channel estimation accuracy.
Yuanxue Xin +5 more
doaj +1 more source
IEEE Access, 2022 In this paper, it is proposed to enhance coherent optical orthogonal frequency-division multiplexing (OFDM) system by using index modulation in terms of bit error rate (BER) and spectral efficiency for different levels of the fiber nonlinearity.
Ahmet Guner
doaj +1 more source
On the Spectral Efficiency and Fairness in Full-Duplex Cellular Networks
, 2017 To increase the spectral efficiency of wireless networks without requiring full-duplex capability of user devices, a potential solution is the recently proposed three-node full-duplex mode.
Fischione, Carlo +2 more
core +1 more source
Worst-case User Analysis in Poisson Voronoi Cells [PDF]
, 2013 In this letter, we focus on the performance of a worst-case mobile user (MU) in the downlink cellular network. We derive the coverage probability and the spectral efficiency of the worst-case MU using stochastic geometry. Through analytical and numerical
Jung, Sang Yeob +2 more
core +1 more source
Spectral Efficiency of One-Bit Sigma-Delta Massive MIMO
IEEE Journal on Selected Areas in Communications, 2019 We examine the uplink spectral efficiency of a massive MIMO base station employing a one-bit Sigma-Delta ( $\Sigma \Delta $ ) sampling scheme implemented in the spatial rather than the temporal domain. Using spatial rather than temporal oversampling, and
Hessam Pirzadeh +3 more
semanticscholar +1 more source
Impact of Spectrum Sharing on the Efficiency of Faster-Than-Nyquist Signaling
, 2014 Capacity computations are presented for Faster-Than-Nyquist (FTN) signaling in the presence of interference from neighboring frequency bands. It is shown that Shannon's sinc pulses maximize the spectral efficiency for a multi-access channel, where ...
Hefnawy, Marwa El, Kramer, Gerhard
core +1 more source