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Efficient uncertainty minimization for fuzzy spectral clustering [PDF]

open access: yesPhysical Review E, 2009
Keywords: cluster analysis, clustering, spectral clustering, fuzzy clustering, pattern recognition, spectral graph theory, spectral graph partitioning, macrostates; v3 changes: geometric representations motivate 0th order solution; better scaling results because of sparse matrices; v5 changes: 19 pages, applied to asymmetric and symmetric ...
White, Brian, Shalloway, David
openaire   +3 more sources

Performance Analysis of a Full-Duplex MIMO Decode-and-Forward Relay System With Self-Energy Recycling

open access: yesIEEE Access, 2020
This paper analyzes the performance of the full-duplex (FD) multiple-input-multiple-output (MIMO) decode-and-forward (DF) relay system in the presence of self-energy recycling (S-ER). Specifically, this work proposes an antenna allocation scheme for S-ER
Mohd Hamza Naim Shaikh   +2 more
doaj   +1 more source

On the energy efficiency-spectral efficiency trade-off in the uplink of CoMP system [PDF]

open access: yes, 2012
In this paper, we derive a generic closed-form approximation (CFA) of the energy efficiency-spectral efficiency (EE-SE) trade-off for the uplink of coordinated multi-point (CoMP) system and demonstrate its accuracy for both idealistic and realistic power
Héliot, Fabien   +2 more
core   +1 more source

Integrated Framework to Study Efficient Spectral Estimation Techniques for Assessing Spectral Efficiency Analysis [PDF]

open access: yesInternational Journal of Advanced Computer Science and Applications, 2017
The advanced network applications enable software driven spectral analysis of non-stationary signal or processes which precisely involves domain analysis with the purpose of decomposing a complex signal coefficients into simpler forms. However, the proper estimation of power coefficients over frequency components of a random signal leads to provide ...
Kantipudi MVV, H.N. Suresh
openaire   +1 more source

Spectral Efficiency Considerations in 6G Networks

open access: yesIEEE Open Journal of the Communications Society
As wireless connectivity continues to evolve toward 6G, the demand to efficiently deliver higher throughput, lower latency, and improved reliability increases.
Joseph Boccuzzi
doaj   +1 more source

On the Spectral Efficiency and Fairness in Full-Duplex Cellular Networks

open access: yes, 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

ZoomOut [PDF]

open access: yesACM 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

Joint Processing of Pilot and Data for Massive MIMO Systems in Ricean Fading Channels

open access: yesIEEE 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

Coherent Optical OFDM With Index Modulation for Long-Haul Transmission in Optical Communication Systems

open access: yesIEEE 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 energy efficiency-spectral efficiency trade-off over the MIMO rayleigh fading channel [PDF]

open access: yes, 2012
Along with spectral efficiency (SE), energy efficiency (EE) is becoming one of the key performance evaluation criteria for communication system. These two criteria, which are conflicting, can be linked through their trade-off. The EE-SE trade-off for the
Héliot, Fabien   +2 more
core   +1 more source

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