Results 41 to 50 of about 6,450,359 (383)
Spectral efficiency of spectrum-pooling systems [PDF]
IET Communications, 2008 In this contribution, we investigate the idea of using cognitive radio to reuse locally unused spectrum to increase the total system capacity. We consider a multiband/wideband system in which the primary and cognitive users wish to communicate to different receivers, subject to mutual interference and assume that each user knows only his channel and ...
Haddad, Majed +2 more
openaire +2 more sources
Improving the Spectral Efficiency of Nonlinear Satellite Systems through Time-Frequency Packing and Advanced Processing [PDF]
, 2013 We consider realistic satellite communications systems for broadband and broadcasting applications, based on frequency-division-multiplexed linear modulations, where spectral efficiency is one of the main figures of merit.
Amina Piemontese +4 more
core +1 more source
Optics Express, 2019 We present a low-complexity fully pilot-based digital signal processing (DSP) chain designed for high spectral efficiency optical transmission systems.
M. Mazur +5 more
semanticscholar +1 more source
IEEE Access, 2022 The fast growing Internet of Vessels (IoV) requires maritime communications to be more spectral efficient to make full use of the scarce maritime spectral resource, provide a high data transmission rate and support massive communication nodes to access ...
Xinyu Dou +3 more
doaj +1 more source
Spectral efficiency of energy efficient multicarrier systems [PDF]
ACM SIGMETRICS Performance Evaluation Review, 2014 We investigate the achievable performances of multi-carrier energy efficient power control game. Both the simultaneous-move and the hierarchical games are addressed. For the first time, we derive analytical closed-form expressions of the spectrum coordination and the spectral efficiency of such models.
Haddad, Majed +3 more
openaire +1 more source
High Spectral Efficiency Coherent Superchannel Transmission With Soliton Microcombs [PDF]
Journal of Lightwave Technology, 2018 Spectral efficiency (SE) is one of the key metrics for optical communication networks. An important building block for its maximization are optical superchannels, channels that are composed of several subchannels with an aggregate bandwidth larger than ...
M. Mazur +7 more
semanticscholar +1 more source
Efficient uncertainty minimization for fuzzy spectral clustering [PDF]
Physical 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
Spectral Efficiency Analysis of Cell-Free Massive MIMO Systems With Zero-Forcing Detector [PDF]
IEEE Transactions on Wireless Communications, 2018 In this paper, we firstly derive two approximations of the achievable uplink rate with the perfect/imperfect channel state information (CSI) in cell-free massive multi-input multi-output (MIMO) systems, and all these approximations are not only in the ...
Pei Liu, Kai Luo, Da Chen, Tao Jiang
semanticscholar +1 more source
IEEE 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
Integrated Framework to Study Efficient Spectral Estimation Techniques for Assessing Spectral Efficiency Analysis [PDF]
International 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