scholarly journals Delay-constrained scheduling: power efficiency, filter design, and bounds

2004 ◽  
Author(s):  
M.A. Khojastepour ◽  
A. Sabharwal
Keyword(s):  
Power Efficiency ◽  
Filter Design

scholarly journals Dispersion Compensation Filter Design Optimized for Robustness and Power Efficiency

2015 ◽  
Author(s):  
Alireza Sheikh ◽  
Christoffer Fougstedt ◽  
Alexandre Graell i Amat ◽  
Pontus Johannisson ◽  
Per Larsson-Edefors ◽  
...  
Keyword(s):  
Power Efficiency ◽  
Filter Design ◽  
Dispersion Compensation

NOVEL DESIGN AND FPGA IMPLEMENTATION OF DA-RNS FIR FILTERS

2004 ◽  
Vol 13 (06) ◽  
pp. 1233-1249 ◽  
Author(s):  
WEI WANG ◽  
M. N. S. SWAMY ◽  
M. O. AHMAD
Keyword(s):  
Power Efficiency ◽  
Filter Design ◽  
Finite Impulse Response ◽  
Chinese Remainder Theorem ◽  
Low Cost ◽  
Digital Signal ◽  
Number System ◽  
Residue Number System ◽  
Fpga Implementation ◽  
Fir Filters

Field programmable gate array (FPGA)-based digital signal processing has been widely used in multimedia applications. By combining distributed arithmetic (DA) and residue number system (RNS) in such designs, efficient area, speed and power efficiency can be achieved. In this paper, we propose novel techniques for the design and FPGA implementation of DA-RNS finite impulse response (FIR) filters. By introducing a novel low-cost moduli set and its selection method, efficient modulo arithmetic units inside the subfilters are designed. Then, a new residue-to-binary conversion algorithm, a so-called modified DA Chinese remainder theorem, is derived to reduce the modulo operations and provide an efficient residue-to-binary converter suitable to FPGA implementation. Based on these proposed techniques, a seventh-order DA-RNS FIR filter is designed, implemented and tested by using Xilinx FPGA tools. The implementation results show that the proposed filter design consumes only 77% of the power that the existing filter12,13 requires, while maintaining the same speed (throughput).

scholarly journals Power Efficiency and EMI Attenuation Optimization in Filter Design

2018 ◽  
Vol 60 (6) ◽  
pp. 1811-1818 ◽  
Author(s):  
Moises Ferber ◽  
Roberto Mrad ◽  
Florent Morel ◽  
Gael Pillonnet ◽  
Christian Vollaire ◽  
...  
Keyword(s):  
Power Efficiency ◽  
Filter Design

Maximizing the Area Spanned by the Optical SNR of the 5G Using Digital Modulators and Filters

2021 ◽  
Vol 18 (3) ◽  
Author(s):  
Guruviah Karpagarajesh ◽  
Helen Anita
Keyword(s):  
Optical Communication ◽  
Free Space ◽  
Communication Systems ◽  
Power Efficiency ◽  
Filter Design ◽  
Weather Condition ◽  
Channel Noise ◽  
Free Space Optical Communication ◽  
Free Space Optical ◽  
Space Optical Communication

High security data link channels having more immunity against channel noise is the need of the century. Free Space Optical communication (FSO) is the modern technology which kick-starts it’s application in inter satellite communication, underwater communication and mobile communication to the next level of data transmission by means of complete utilisation of the allocated frequency spectrum. In Europe and Asian countries, 5G optical communication will going to expand its usage to nearly 50% in upcoming years and so bandwidth and power efficiency has to be enhanced as much as possible since the consumption rate of the users is increasing exponentially. But increasing the distance increases the attenuation in case of severe atmospheric weather condition. In this paper, 5G data rate of 50Gbps is ensured for better signal reception with maximum possible link distance between the sender and the receiver keeping variable attenuation environment. The frequency of operation is 1550nm throughout the processes. In this work, several digital modulation techniques and optical filters for receiver are designed and simulated. The better resulting modulator and filter design in terms of high Quality factor and low bit error rate are considered and is integrated with each other. The Signal to Noise Ratio (SNR) and optical SNR are calculated for the integrated design theoretically. Higher the SNR less will be BER and hence the signal connectivity can be improved in the high speed free space optical communication systems.

Towards optimum multilayer filter design

1991 ◽  
Vol 138 (4) ◽  
pp. 241 ◽  
Author(s):  
T.C. Chen
Keyword(s):  
Filter Design

Effect of Shielding a Floating Electrode on the Power Efficiency of a Micro-plasma VUV Light Source

2015 ◽  
Vol 135 (3) ◽  
pp. 114-115 ◽  
Author(s):  
Ryoto Sato ◽  
Daisuke Yasumatsu ◽  
Shinya Kumagai ◽  
Masaru Hori ◽  
Minoru Sasaki
Keyword(s):  
Light Source ◽  
Power Efficiency ◽  
Floating Electrode

EXPERIMENTAL AND ANALYTICAL STUDIES OF VERTICAL AXIS WIND TURBINES

2018 ◽  
pp. 51-58
Author(s):  
B. P. Khozyainov
Keyword(s):  
Wind Turbine ◽  
Flow Velocity ◽  
Wind Power ◽  
Wind Turbines ◽  
Power Efficiency ◽  
Air Flow ◽  
Geometrical Parameters ◽  
Wind Speeds ◽  
Analytical Studies ◽  
Air Flow Velocity

The article carries out the experimental and analytical studies of three-blade wind power installation and gives the technique for measurements of angular rate of wind turbine rotation depending on the wind speeds, the rotating moment and its power. We have made the comparison of the calculation results according to the formulas offered with the indicators of the wind turbine tests executed in natural conditions. The tests were carried out at wind speeds from 0.709 m/s to 6.427 m/s. The wind power efficiency (WPE) for ideal traditional installation is known to be 0.45. According to the analytical calculations, wind power efficiency of the wind turbine with 3-bladed and 6 wind guide screens at wind speedsfrom 0.709 to 6.427 is equal to 0.317, and in the range of speed from 0.709 to 4.5 m/s – 0.351, but the experimental coefficient is much higher. The analysis of WPE variations shows that the work with the wind guide screens at insignificant average air flow velocity during the set period of time appears to be more effective, than the work without them. If the air flow velocity increases, the wind power efficiency gradually decreases. Such a good fit between experimental data and analytical calculations is confirmed by comparison of F-test design criterion with its tabular values. In the design of wind turbines, it allows determining the wind turbine power, setting the geometrical parameters and mass of all details for their efficient performance.

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