Essays about: "ENERGY EFFICIENCY SPECTRAL EFFICIENCY"

Showing result 16 - 20 of 31 essays containing the words ENERGY EFFICIENCY SPECTRAL EFFICIENCY.

1. 16. Temporal Characterization and Intensity Contrast Improvement of Few-cycle Laser Pulses

   University essay from Umeå universitet/Institutionen för fysik

   Author : Xiaoying Zhang; [2019]
   Keywords : ;

   Abstract : Due to the unique combination of properties of high intensity and few optical cycle pulse duration, the ultrashort laser pulses have widespread applications in pump-probe spectroscopy and laser-plasma interaction. Correspondingly, it is critical to precisely measure the electric field in the temporal or spectral domain. READ MORE

3. 17. Reduction of Crosstalk Distortion in 5G

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Ali Al-Qamaji; Fida Abdalrahman; [2019]
   Keywords : Wireless Communication; Power Amplifier; Linearization; Digital predisposition; 5G; Massive MIMO.; Technology and Engineering;

   Abstract : Increasing demand for higher data rates in wireless communication systems has tremendously evolved over the last years. This demand is rapidly increasing with rising in number of wireless devices. READ MORE

4. 18. Codebook Based Multi-User MIMO for 5G

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Ralf Hajjar; Rahul Venkat Vissakodeti; [2019]
   Keywords : codebook type II; precoding for 5G; Technology and Engineering;

   Abstract : Better signal strength is required to provide a good signal service to the UE. For this, different methods and techniques are available, one of them is codebook type II precoding. This method has a potential to provide an amount of energy to the user in the required direction more precisely than Codebook type I. READ MORE

5. 19. Large Eddy Simulation of Turbulent Flow over a Backward-Facing Step

   University essay from Uppsala universitet/Institutionen för informationsteknologi

   Author : Edmond Shehadi; [2018]
   Keywords : ;

   Abstract : This work studies the effect of grid resolution and subgrid scale modeling on the predictive accuracy of Large Eddy Simulation. In particular, the problems considered are: turbulent flow over a backward-facing step and fully-developed turbulent channel flow. READ MORE

6. 20. Evaluation of white-light generation as possible seed for a mid-infrared optical parametric chirped pulse amplifier

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Kärnfysik

   Author : Chuang Lu; [2017]
   Keywords : nonlinear linear optics; ultrafast optics; Mid-infrared generation; near-infrared; Optical parametric amplification; Optical Parametric Chirped-pulse Amplification; supercontinuum generation; white-light generation; laser induced filamentation; Dispersion-scan; nonlinear propagation; Physics and Astronomy;

   Abstract : White-light spectra of different crystals, based on 1030-nm intense pump pulses have been investigated in order to derive a near-infrared seed for mid-infrared generation. Among ten crystals, YAG (yttrium aluminium garnet), KGW (potassium gadolinium tungstate) and YVO4 (yttrium orthovanadate) exhibit the most suitable properties for supercontinuum generation with high efficiency for spectral broadening as well as high tolerance to optical damage. READ MORE