Volume-4 Issue-5, March 2017 – International Journal of Inventive Engineering and Sciences (IJIES) https://www.ijies.org Exploring Innovation | ISSN: 2319-9598(Online) | A Periodical Journal | Reg. No.: C/1383209 | Published by BEIESP Fri, 03 Sep 2021 06:13:53 +0000 en-US hourly 1 https://www.ijies.org/wp-content/uploads/2021/02/cropped-IJIES-Logo-WF-32x32.png Volume-4 Issue-5, March 2017 – International Journal of Inventive Engineering and Sciences (IJIES) https://www.ijies.org 32 32 E0741034517 https://www.ijies.org/portfolio-item/e0741034517/ https://www.ijies.org/portfolio-item/e0741034517/#respond Wed, 25 Aug 2021 10:44:19 +0000 https://www.ijies.org/?post_type=portfolio&p=5548 The post E0741034517 appeared first on International Journal of Inventive Engineering and Sciences (IJIES).

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Based on Pseudo-Pilot Channel Estimation Performance Analysis of OFDM System
Akshay Rana1, Rosy Dhiman2, Mamta Arora3
1Akshay Rana, Department of Electronics and Communication Engineering, Chandigarh University, Mohali, India.
2Rosy Dhiman, Department of Electronics and Communication Engineering, Chandigarh University, Mohali, India.
3Mamta Arora, Department of Electronics and Communication Engineering, Chandigarh University, Mohali, India.
Manuscript received on April 01, 2017. | Revised Version Manuscript Received on April 16, 2017. | Manuscript published on April 20, 2017. | PP: 43-47 | Volume-4 Issue-5, March 2017. | Retrieval Number: E0741034517/2017©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering & Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: The demand of Orthogonal Frequency Division Multiplexing (OFDM) has been increased from last few decades in wireless communication system. Channel estimation is the essential problem in OFDM system. Channel response can be obtained by employing pilot in payload symbols. In this paper we are estimating channel in OFDM system using pseudo-pilot inplace of pilot symbol. We are showing that the performance of proposed method is AWGN fading channel is better then the performance of pseudo-pilot in Rayleigh channel. In OFDM technique we are using time domain so signal in the series so we cannot used more signal it can use proposed channel estimation to estimate the channel impulse response using pseudo-pilot. The modulation technique used is QAM
Keywords: Channel estimation, Orthogonal frequency division multiplexing (OFDM), Pseudo-Pilot, interlesver, MIMO

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Performance Analysis of OFDM System through Pseudo-Pilot and Greedy Algorithms
Rosy Dhiman1,  Akshay Rana2, Mamta Arora3
1Rosy Dhiman, Department of Electronics and Communication Engineering, Chandigarh University, Mohali, India.
2Akshay Rana, Department of Electronics and Communication Engineering, Chandigarh University, Mohali, India.
3Mamta Arora, Department of Electronics and Communication Engineering, Chandigarh University, Mohali, India.
Manuscript received on April 01, 2017. | Revised Version Manuscript Received on April 16, 2017. | Manuscript published on April 20, 2017. | PP: 39-42 | Volume-4 Issue-5, March 2017. | Retrieval Number: E0740034517/2017©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering & Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In this paper, to investigate a pilot problem for Greedy algorithms using channel estimation in OFDM system. The Greedy algorithm is used for channel estimation in OFDM system over AWGN fading channel. Thus, Greedy algorithm is used for the optimization process. The OFDM is providing a high speed data rate and low complexity because it reduces the intersymbol interference for transmission over frequency selective channel. Hence, Greedy algorithms use a pilot to create overhead problem, this problem solve with pseudo-pilot. On the basis of BER (bit error rate) performance of OFDM is evaluate. In Simulation results show, BER vs SNR compared the performance of pilot aided and pseudo-pilot using Greedy algorithms.
Keywords: Greedy Algorithms, Channel Estimation, OFDM System, Sparse Channel.

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Low Power Current Mirror Topologies in 32nm Technology for VlSI Analog Circuit
Aman Kumar1, Gurinder Pal Singh2
1Aman Kumar, Research Scholar, Department of Electronics and Communication Engineering, Chandigarh University, Gharuan (Punjab), India.
2Gurinder Pal Singh, Assistant Professor, Department of Electronics and Communication Engineering, Chandigarh University, Gharuan (Punjab), India.
Manuscript received on April 08, 2017. | Revised Version Manuscript Received on April 15, 2017. | Manuscript published on April 20, 2017. | PP: 33-38 | Volume-4 Issue-5, March 2017. | Retrieval Number: E0739034517/2017©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering & Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This paper deals with the analog circuit constructed using a current mirror. Two stage op-amp circuits are made from current mirror and other elements like source amplifier. Here, we have constructed four types of current mirror named as Conventional CM, Cascode CM, Wilson CM, modified Wilson CM. The imperative constraints of current mirrors approaches are source voltage for small power, output resistance, overall power, constancy are related to each other. On studying these schemes, it is detected that modified Wilson current mirror current mirror system has increased the output resistance by 21MΩ to 37MΩ of the Wilson current mirror and decreased the power consumption by 23.10µW to 19.43µW.We have also constructed two-stage op-amps with help of conventional current mirror. In this paper an operational amplifier by CMOS is presented whose input depends on bias current which is 20uA and designed using 32nm technology. In sub-threshold region due to unique behavior of the MOSFET transistors not only allows a designer to work at low voltage and also at low input bias current. Scaling of MOSFET and keeping Vdd up to 0.8V-1.2V gain and phase margin of purposed op-amp has been obtained 78.6db and 68.8o respectively. These simulations are accomplished in 32nm CMOS technology using Galaxy cdesigner tool in Synopsis.
Keywords: Mixed design, CMOS, Two Stage op-amp, Current Mirrors, Synopsis, diode connected, MOSFET, Low voltage.

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Analysis of a Modelled CNC Milling Machine Bed with different Composite Materials
T. Subrahmanyam1, G. Sai Karthik2, N. Sai Sudheer3, S. Farooq Basha4, Ch. Sridhar Yesaswi5
1T. Subrahmanyam, U.G Students, Department of Mechanical Engineering, K L University, Guntur, (A.P.)-522502, India.
2G. Sai Karthik, U.G Students, Department of Mechanical Engineering, K L University, Guntur, (A.P.)-522502, India.
3N. Sai Sudheer, U.G Students, Department of Mechanical Engineering, K L University, Guntur, (A.P.)-522502, India.
4S. Farooq Basha, U.G Students, Department of Mechanical Engineering, K L University, Guntur, (A.P.)-522502, India.
5Ch. Sridhar Yesaswi, Assistant Professor, Department of Mechanical Engineering, KL University, Guntur, (A.P.)-522502, India.
Manuscript received on April 01, 2017. | Revised Version Manuscript Received on April 10, 2017. | Manuscript published on April 20, 2017. | PP: 29-32 | Volume-4 Issue-5, March 2017. | Retrieval Number: E0737034517/2017©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering & Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In Industrial world CNC machines are dominating because of its versatile form of automation. The structural materials used in a machine tool plays a decisive role in productivity, accuracy and surface finish of the parts manufactured in it. The materials which have high stiffness and good damping characteristics are only used as structural materials in machine tool to withstand high operating speeds. The vibrations developed in machining operation gets transferred into machine tool structure. The conventional structural materials such as cast iron and steel develops positional errors due to vibrations transferred into the structure at high operating speeds. We know that by experiences, the proportionality of the life of a machine is inverse to the levels of vibrations that the machine is subjected. In this work, a machine bed is selected for the analysis on static loads. Then work is carried out to overcome the limitations in structural material, conventional materials are replaced with composite materials having high stiffness and good damping characteristics. The main aim of this work is increasing and reducing the structural weight. A 3D CAD model of the machine bed is created by using SOLID WORKS and analysis were carried out on different composite machine bed using ANSYS workbench.
Keywords: Machine tool, Machine bed, Stiffness, Damping, Solidworks, Ansys.

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Big Data Management by Fuzzy, Neural Network and Genetic Algorithm
Anil Kumar Tiwari1, G. Ramakrishna2, Lokesh Kumar Sharma3, Sunil Kumar Kashyap4
1Anil Kumar Tiwari, Department of Computer Science, KL University, Vijayavada, Andhra Pradesh, India.
2G. Ramakrishna, Department of Computer Science, KL University, Vijayavada, Andhra Pradesh, India.
3Lokesh Kumar Sharma, National Institute of Occupational Health, Ahemdabad, India.
4Sunil Kumar Kashyap, Department of Mathematics, School of Advanced Sciences, VIT University, Vellore, Tamil Nadu, India.
Manuscript received on March 10, 2017. | Revised Version Manuscript Received on March 15, 2017. | Manuscript published on March 20, 2017. | PP: 27-28 | Volume-4 Issue-5, March 2017. | Retrieval Number: E0725034517/2017©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering & Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This paper manages the academic data by the dynamic techniques. The data may have the infinite information. This infinite information transforms into the finite information by the dynamic algorithm. This dynamic algorithm consists fuzzy logic, neural and genetic algorithm. Thus the result lies the data analysis from Data Mining to Dynamic Data Mining. New techniques are introduced here for redefining the database and its analysis. The database Student’s Academic Performances is selected for the generalization of the proposed method. It is all is studied over Fuzzy, Neural Network and Genetic Algorithm
Keywords: Data Mining (DM), Dynamic Data Mining (DDM), Database (DB), Student’s Academic Performance (SAP), Neural Network (NN), Genetic Algorithm (GA).

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Stability and Efficiency of the Positive Definite Quadratic Programming Algorithms
Awatif M .A .Elsiddieg
Awatif M. A. Elsiddieg, Department of Mathematical, Faculty of Science& Humanities Studies, Prince Sattam Bin Abdul-Aziz University, Kingdom of Saudi Arabia.
Manuscript received on March 06, 2017. | Revised Version Manuscript Received on March 15, 2017. | Manuscript published on March 20, 2017. | PP: 4-26 | Volume-4, Issue-5, March 2017. | Retrieval Number: E0719034517/2017©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering & Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In this paper we introduce some stable and efficiency algorithms for the positive definite quadratic programming . Sections (1), introduce matrix factorizations QR factorization ,orthogonal transformation using Householder matrices , which leads to our main work. In section(2) general consideration is given. In section (3) we introduce the basic concepts methods linear equality and inequality constraints that leads to our methods. In section (4) we give some of the stable and efficiency algorithms for positive quadratic programming only using KKT-conditions. We conclude our paper by showing that there are stable and efficient methods for indefinite programming as the extended Dantzig Wolfe method[20].
Keywords: KKT-conditions, QR factorization, active set methods, penalty and barrier functions, complementrity.

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Need and Reasons for the Development of Performance Measures and Evaluation for the Relm of Environment Management in Indian Industries
Vinod S. Bhaskarwar
Vinod S. Bhaskarwar, Assistant Professor, Lokmanya Tilak College of Engineering, Navi Mumbai (Maharashtra)-400709, India.
Manuscript received on March 01, 2017. | Revised Version Manuscript Received on March 10, 2017. | Manuscript published on March 20, 2017. | PP: 1-3 | Volume-4 Issue-5, June 2017. | Retrieval Number: E0717034517/2017©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering & Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Environmental management is management of those activities of a firm that have or can have an impact on the environment. The manufacture of products involves extracting raw materials from the environment and processing them to produce saleable items. As a result of the production process, various forms of waste (solid, liquid and gaseous) enter the environment. The activities surrounding the manufacturing process – such as maintenance of plant and infrastructure and the packaging and transport of goods all have environmental impacts. In addition, the products that are produced will eventually be disposed of and enter the environment as waste simply the environment acts as a source of raw material inputs to the industrial process and as a sink for its waste outputs. This relationship between Environmental management means different things to different people. Generally the focus is on environmental impacts and ways they can be minimized. The scope of the activities, resources or area that we aim to improve environmentally varies considerably
Keywords: Environmental Management System, critical Factors, performance Measures

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