Results 211 to 220 of about 193,376 (261)
Enhancing 5G uplink communications through efficient PCC-OFDM with neural network-based channel estimation. [PDF]
Sci RepJ MJ, S S.
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Optimal spectrum granularity for spectrally-efficient elastic optical networks. [PDF]
Sci RepUjjwal U, Petale S, Thangaraj J.
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Spectral efficiency in the wideband regime
IEEE Transactions on Information Theory, 2002Summary: The tradeoff of spectral efficiency (b/s/Hz) versus energy-per-information bit is the key measure of channel capacity in the wideband power-limited regime. This paper finds the fundamental bandwidth-power tradeoff of a general class of channels in the wideband regime characterized by low, but nonzero, spectral efficiency and energy per bit ...
S Verdú
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Efficient Spectral Methods for PDEs with Spectral Fractional Laplacian
Journal of Scientific Computing, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Changtao Sheng, Duo Cao, Jie Shen 0001
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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
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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
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The spectral efficiency of linear precoders
Proceedings 2003 IEEE Information Theory Workshop (Cat. No.03EX674), 2004Recent results on the asymptotic empirical eigenvalue distribution of the sum or product of matrices, based on the free probability theory, have enabled the study of the asymptotic limits of linear precoded OFDM systems with MMSE equalization for ergodic and non-ergodic channels.
Mérouane Debbah +2 more
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Spectrally Efficient Optical Communications
Asia Communications and Photonics Conference 2015, 2015The 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 +3 more
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Spectral Efficiency of Multicarrier CDMA
IEEE Transactions on Information Theory, 2005We analyze the spectral efficiency (sum-rate per subcarrier) of randomly spread synchronous multicarrier code-division multiple access (MC-CDMA) subject to frequency-selective fading in the asymptotic regime of number of users and bandwidth going to infinity with a constant ratio.
TULINO, ANTONIA MARIA, LI L., VERDU S.
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Spectrally efficient noncoherent communication
IEEE Transactions on Information Theory, 2002Summary: 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 ...
Dilip Warrier, Upamanyu Madhow
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Efficient evolutionary spectral clustering
Pattern Recognition Letters, 2016An evolutionary spectral clustering method using a smoothed Laplacian is presented.The incomplete Cholesky decomposition (ICD) reduces runtime from O(N3) to O(N).The memory requirements are decreased from O(N2) to O(N).A stopping criterion using the convergence of cluster assignments is adopted.An efficient procedure to select the number of clusters is
Rocco Langone +2 more
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