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Performance Analysis of Modulation Techniques in 5G Communication System

China Communications 2022年第8期19卷 100-114页

作者： Muhammet Tahir Guneser ahmed Salahaldeenali sahab Cihat Seker Electrical and Electronics Engineering Department Engineering FacultyKarabuk UniversityTurkey

In the 5^(th) generation mobile communication(5G)system,better bitrate,better power consumption,and better Bit Error Rate are *** meet all these requirements in 5G,the waveform is *** the Orthogonal Frequency Division Multiplexing(OFDM)modulation scheme has been commonly used in 4G,it is difficult to meet the requirements of 5G.A lot of candidate waveforms are discussed in the 5G system included Filter Bank Multicarrier(FBMC),Universal Filtered Multicarrier(UFMC),Filtered OFDM(F-OFDM),and Generalized Frequency Division Multiplexing(GFDM),***,since GFDM is no longer widely used,in this paper,FBMC,UFMC,and F-OFDM modulation schemes are discussed and compared with *** Spectral Density(PSD),Bit Error Rate(BER),Transmitted Signal Power,Peak Average Power Ratio(PAPR)and Bit Rate parameters of the modulation schemes are studied and compared with *** demonstrates to be the most promising modulation scheme for 5G systems.

关键词： PSD PAPR OFDM FBMC UFMC FOFDM

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Fore-Body Side Vortex of KVLCC2 at 30°Drift: A Trailing Vortex Resolved with DES and Compared to PIV Data

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Open Journal of Fluid Dynamics 2019年第4期9卷 303-325页

作者： Dag-Frederik Feder Ivan Shevchuk ahmed sahab Lukas Gerwers Moustafa Abdel-Maksoud FDS/TUHH Hamburg Germany

A hybrid RANS-LES approach is used to resolve the Fore-body Side Vortex (FSV) separating from the KVLCC2 hull at 30° drift angle and Reynolds number ReLoa ≈ 2.56e6. The performance of the DES approach is evaluated using a proper grid study. Besides, the following aspects of the CFD results are investigated: the resolution of turbulent energy, the prediction of instantaneous and time-averaged vortical structures, local flow features, the limiting streamlines and the evolution of the vortex core flow. New PIV data from wind tunnel experiments is compared to the latter. The results form a basis for future investigations in particular on the vortex interaction further downstream and the applicability of different kinds of turbulence models to trailing vortices like the FSV. Turbulence modelling is realised with the k-ω-SST-IDDES model presented in [1], the grids’ cell count is 6.4 M, 10.5 M and 17.5 M. Grid convergence of the time-averaged vortex core flow is observed. OpenFOAM version 1806 is used to carry out the simulations and snappyHexMesh to build the mesh.

关键词： KVLCC2 DES Hybrid RANS-LES PIV Trailing Vortex Drift

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POM analysis and computational interactions of 8-hydroxydiospyrin inside active site of protein tyrosine phosphatase 1B

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BIOCELL 2021年第3期45卷 751-759页

作者： SAUD BAWAZER ASGHAR KHAN ABDUR RAUF TAIBI B EN HADDA YAHYA SAL-AWTHAN OMAR BAHATTAB UMER RASHID INAMULLAH KHAN MUHAMMAD A SIF NAWAZ MD sahab UDDIN OLATUNDE ahmed MOHAMMAD A LI SHARIATI Department of Pharmaceutical Chemistry Faculty of PharmacyUmm Al-Qura UniversityMakkah21955Saudi Arabia Department of Medicine Khyber Teaching Hospital Peshawar25000Pakistan Department of Chemistry University of SwabiSwabi23430Pakistan LCM Laboratory Mohammed First UniversityFaculty of SciencesOujda60000Morocco Biology Department Faculty of SciencesUniversity of TabukTabuk1144Saudi Arabia Department of Biology Faculty of ScienceIbb UniversityIbbYemen Department of Chemistry COMSATS University IslamabadAbbottabad CampusAbbottabad22060Pakistan Department of Pharmacy University of PeshawarPeshawar25120Pakistan Department of Biotechnology Shaheed Benazir Bhutto UniversitySheringal14400Pakistan Department of Pharmacy Southeast UniversityDhaka1213Bangladesh Pharmakon Neuroscience Research Network Dhaka1207Bangladesh Department of Biochemistry Abubakar Tafawa Balewa UniversityBauchi740272Nigeria Moscow State University of Technologies and Management(The First Cossack University) Moscow119991Russian Federation

Proteintyrosine phosphatase 1B(PTP1B)inhibitionis consideredas a potentialtherapeuticfor the treatmentof cancer,type2 diabetes,*** presentwork,weinvestigatedtheanti-diabeticpotentialof8-hydroxydiospyrin(8-HDN)from *** against the PTP1B *** showed significant inhibitory activity of PTP1B with an IC 50 value of 18.37±0.02μM.A detailed molecular docking study was carried out to analyze the binding orientation,binding energy,and mechanism of inhibition.A comparative investigation of 8-HDN in the catalytic,as well as the allosteric site of PTP1B,was *** energy data showed that compound 8-HDN is more selective for the allosteric site and hence avoids the problems associated with catalytic site *** inhibition mechanism of 8-HDN can be further investigated as an active lead compound against PTP1B by using in vitro and in vivo models.

关键词： Diospyros lotus Roots 8-Hydroxydiospyrin Molecular docking Protein tyrosine phosphatase 1B

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