Seamless Optimized LTE Based Mobile Polar Decoder Configuration for Efficient System Integration, Higher Capacity, and Extended Signal Coverage

2019 ◽  
Vol 10 (3) ◽  
pp. 68-90
Author(s):  
Makarand Mohan Jadhav ◽  
Ganesh G Dongre ◽  
Ashok M Sapkal
Keyword(s):  
Mobile Communications ◽  
System Integration ◽  
Optimization Technique ◽  
Scale Up ◽  
Channel Utilization ◽  
Taguchi Optimization ◽  
Coverage Area ◽  
Efficient System ◽  
Low Snr ◽  
Polar Code

Mobile communications have seminal importance in telecommunication systems. Thrust challenges in optimization area like capacity to scale up in channels, coverage area and integration of newer techniques with minimum design efforts are targeted in this work. This article proposes a novel technique of configuring the present decoder with Euclidian distance polar-code decoding method at low hardware efforts. The Taguchi optimization technique based on orthogonal array method for polar-code is employed to carry out an experimental design to achieve parameter optimization. This method helps to cram interaction between process parameters. Taguchi optimization analysis of polarization effect of polar code and 8 PSK higher modulations resulted into an increase in channel utilization and bandwidth. The experimentation results proved a low SNR of 9.8 dB and efficient channel utilization of 2.9956 bits/Hz for desired BER of 10- 4, reducing network congestion by 1.5 times. At the same time, yield in bandwidth has sunk from 25 KHz to 16.66 KHz by paying minimum penalty of 1.496 dB in required SNR.

scholarly journals Taguchi optimization and scale up of xylanase from Bacillus licheniformis isolated from hot water geyser

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Girisha Malhotra ◽  
Shilpa S. Chapadgaonkar
Keyword(s):  
Process Parameters ◽  
Wheat Bran ◽  
Scale Up ◽  
Industrial Applications ◽  
Hot Water ◽  
Optimization Strategy ◽  
Taguchi Optimization ◽  
Xylanase Production ◽  
Alkali Tolerance ◽  
Optimized Conditions

Abstract Background Xylanase is one of the widely applied industrial enzymes with diverse applications. Thermostability and alkali tolerance are the two most desirable qualities for industrial applications of xylanase. In this paper, we reveal the statistical Taguchi optimization strategy for maximization of xylanase production. The important process parameters pH, temperature, concentration of wheat bran, and concentration of yeast extract were optimized using the Taguchi L8 orthogonal array where the 4 factors were considered at 2 levels (high and low). Results The optimized conditions given by model were obtained as follows: (i) pH 6, (ii) culture temperature 35 °C, (iii) concentration of xylan 2% w/v, (iv) concentration of wheat bran 2.5% w/v. The production was scaled upto 2.5 L bioreactor using optimized process parameters. A high xylanase titer of 400 U/ml could be achieved in less than 60 h of culture in the reactor. Conclusion Optimization was successful in achieving about threefold increase in the yield of xylanase. The optimized conditions resulted in a successful scale up and enhancement of xylanase production.

scholarly journals Propagation of Inoculum for Haematococcus pluvialis Microalgae Scale-Up Photobioreactor Cultivation System

2020 ◽  
Vol 10 (18) ◽  
pp. 6283
Author(s):  
Daniel Borowiak ◽  
Katarzyna Pstrowska ◽  
Maciej Wiśniewski ◽  
Michał Grzebyk
Keyword(s):  
Haematococcus Pluvialis ◽  
Scale Up ◽  
Efficient System ◽  
Cultivation System ◽  
Development Processes ◽  
Separate System ◽  
Last Stage ◽  
Conducting Research ◽  
The Moment

An increasing number of microalgae strains are used for commercial production of metabolites. When conducting research, the moment of the process scaling tends to be very difficult. One of the most complex issues is related to planning and designing an efficient system for propagation of appropriately high amounts of inoculum required for inoculating cultures on a semi-technical and industrial scale. The following paper aimed at designing an automated station for the preparation of microalgae inoculation material intended for inoculation of the system, comprising of six 90 dm3 volume photobioreactors. The system, comprised of eight airlift photobioreactors of 12 dm3 volume each, installed in mobile storage units connected to the control system in the form of a docking station. Each of the photobioreactors had a separate system used for monitoring temperature and pH, mixing, and LED lighting. The station constituted the last stage of preparing the inoculation material for inoculating technical-scale photobioreactors, used for conducting experiments with Haematococcus pluvialis microalgae. Achieved results, repeatability of the processes, and the ergonomics of the station increased the productivity and quality of the research and development processes.

scholarly journals Diversity and Multiplexing Technologies by 3D Beams in Polarized Massive MIMO Systems

2016 ◽  
Vol 2016 ◽  
pp. 1-15 ◽  
Author(s):  
Xin Su ◽  
KyungHi Chang
Keyword(s):  
Mobile Communications ◽  
Mimo Systems ◽  
Mimo System ◽  
Multiple Input Multiple Output ◽  
Scale Up ◽  
Beam Width ◽  
System Architectures ◽  
Selection Scheme ◽  
Input Multiple Output ◽  
3D Beamforming

Massive multiple input, multiple output (M-MIMO) technologies have been proposed to scale up data rates reaching gigabits per second in the forthcoming 5G mobile communications systems. However, one of crucial constraints is a dimension in space to implement the M-MIMO. To cope with the space constraint and to utilize more flexibility in 3D beamforming (3D-BF), we propose antenna polarization in M-MIMO systems. In this paper, we design a polarized M-MIMO (PM-MIMO) system associated with 3D-BF applications, where the system architectures for diversity and multiplexing technologies achieved by polarized 3D beams are provided. Different from the conventional 3D-BF achieved by planar M-MIMO technology to control the downtilted beam in a vertical domain, the proposed PM-MIMO realizes 3D-BF via the linear combination of polarized beams. In addition, an effective array selection scheme is proposed to optimize the beam-width and to enhance system performance by the exploration of diversity and multiplexing gains; and a blind channel estimation (BCE) approach is also proposed to avoid pilot contamination in PM-MIMO. Based on the Long Term Evolution-Advanced (LTE-A) specification, the simulation results finally confirm the validity of our proposals.

scholarly journals Optimization of Solar Dryer using Taguchi Method

2019 ◽  
Vol 8 (3) ◽  
pp. 3320-3326
Keyword(s):  
Taguchi Method ◽  
Fossil Fuel ◽  
Optimization Technique ◽  
Experimental Studies ◽  
Air Velocity ◽  
Taguchi Optimization ◽  
Drying Time ◽  
Time Consumption ◽  
Solar Dryer ◽  
Fresh Food

Solar dryers are one of most efficient devices for drying food and other products. These devices are eco-friendly and need solar energy for their operation and which is available freely and abundantly at almost every place. These are simple devices which do not need use any fossil fuel for their operation, which are expensive, exhaustive in nature and are not eco friendly. Several fresh food products and other items are dried for preservation and utilization for longer period of time. In recent times, with the development in this technology, the solar dryers are becoming well equipped with efficiency increasing add-ons which give higher performance. Several experimental studies have been carried out to mitigate the time consumption and increasing the productivity of solar dryers. Optimization of solar dryers is done to increase their workability increasing accuracy and reducing drying time and cost investment. In order to optimize the complete setup several techniques could be used to get the optimum results. In the present work Taguchi optimization technique was applied for experimental analysis of solar dryer which was used to dry potatoes. The results thus obtained showed the best configuration comprising air velocity, air flow and humidity required to dry potatoes

scholarly journals A 5–50 GHz SiGe BiCMOS Linear Transimpedance Amplifier with 68 dBΩ Differential Gain towards Highly Integrated Quasi-Coherent Receivers

Electronics ◽  
2021 ◽  
Vol 10 (19) ◽  
pp. 2349
Author(s):  
Guillermo Silva Valdecasa ◽  
Jose A. Altabas ◽  
Monika Kupska ◽  
Jesper Bevensee Jensen ◽  
Tom K. Johansen
Keyword(s):  
System Integration ◽  
High Speed ◽  
Direct Detection ◽  
Scale Up ◽  
Gain Control ◽  
Point System ◽  
Cell Stage ◽  
Bicmos Technology ◽  
Sige Bicmos ◽  
Coherent Receivers

Quasi-coherent optical receivers have recently emerged targeting access networks, offering improved sensitivity and reach over direct-detection schemes at the expense of a higher receiver bandwidth. Higher levels of system integration together with sufficiently wideband front-end blocks, and in particular high-speed linear transimpedance amplifiers (TIAs), are currently demanded to reduce cost and scale up receiver data rates. In this article, we report on the design and testing of a linear TIA enabling high-speed quasi-coherent receivers. A shunt-feedback loaded common-base topology is adopted, with gain control provided by a subsequent Gilbert cell stage. The circuit was fabricated in a commercial 130 nm SiGe BiCMOS technology and has a bandpass characteristic with a 3 dB bandwidth in the range of 5–50 GHz. A differential transimpedance gain of 68 dBΩ was measured, with 896 mVpp of maximum differential output swing at the 1 dB compression point. System experiments in a quasi-coherent receiver demonstrate an optical receiver sensitivity of −30.5 dBm (BER = 1 × 10−3) at 10 Gbps, and −26 dBm (BER = 1 × 10−3) at 25 Gbps. The proposed TIA represents an enabling component towards highly integrated quasi-coherent receivers.

scholarly journals Concentrating Solar Power Advances in Geometric Optics, Materials and System Integration

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6229
Author(s):  
Georgios E. Arnaoutakis ◽  
Dimitris Al. Katsaprakakis
Keyword(s):  
System Integration ◽  
Alternative Energy ◽  
Solar Power ◽  
Energy Utilization ◽  
Geometric Optics ◽  
Concentrating Solar Power ◽  
Latent Heat Storage ◽  
Efficient System ◽  
Technological Advances ◽  
Thermochemical Processes

In this paper, the technological advances in concentrating solar power are reviewed. A comprehensive system approach within this scope is attempted to include advances of highly specialized developments in all aspects of the technology. Advances in geometric optics for enhancement in solar concentration and temperature are reviewed along with receiver configurations for efficient heat transfer. Advances in sensible and latent heat storage materials, as well as development in thermochemical processes, are also reviewed in conjunction with efficient system integration as well as alternative energy generation technologies. This comprehensive approach aims in highlighting promising concentrating solar power components for further development and wider solar energy utilization.

Evaluation of tribological behaviour of AA7178/Gr composites using Taguchi optimization technique

2020 ◽  
Vol 33 ◽  
pp. 4691-4695
Author(s):  
V. Mohanavel ◽  
K. Yoganandam ◽  
V. Naveen Kumar ◽  
A. Chandrashekar ◽  
S. Prasath
Keyword(s):  
Optimization Technique ◽  
Tribological Behaviour ◽  
Taguchi Optimization
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