IJENS Publisher Indexed In SCOPUS


Title: Closed-Loop Derivation and Evaluation of Joint Carrier Synchronization and Channel Equalization Algorithm for OFDM Systems
Author(s): Chih-Feng Wu, Muh-Tian Shiue
Pages: 1-6 Paper ID:160602-7474-IJECS-IJENS Published: April, 2016
Abstract: This paper emphasizes how to establish the signal flow graph (SFG) of joint carrier synchronization and channel equalization algorithm for OFDM baseband inner receiver using the multirate digital phase-locked loop (DPLL) and the fictitious sampler techniques. Therefore, the closed-loop transfer function (TF) can be easily derived and further applied to examine the stability and the performance of OFDM baseband receiver.
Keywords: Orthogonal frequency division multiplexing (OFDM), carrier frequency offset (CFO), digital phase-locked loop (DPLL).
Full Text (.pdf)  International Journals Of Engineering and Sciences | 697 KB
Title: Anatomy of Routing and Routing Loops with the IP Backbone
Author(s): Meshal Alnasheet, Abdulrahman Al-kandari
Pages: 7-12 Paper ID:161402-8383-IJECS-IJENS Published: April, 2016
Abstract: This paper discussed what is routing, how it works, and how routing function protocols. What will be discussed are the types of protocols and their main characteristics. Then the conflicts of the routing state and how it occurs will be examined, given that such conflicts cause problems for routing loops. Some of protocols that solve this issue will also be elucidate. The discussion in this paper covers only routing, routing protocols, and routing loops within an IP backbone. Also, this paper discussed the causes routing loops in the IP backbone and how can be minimized.
Keywords: Routing, Routing Protocol, Distance vector Protocols, Link state Protocols, Routing Loops.
Full Text (.pdf)  International Journals Of Engineering and Sciences | 304 KB
Title: Experimental and Numerical Comparison between Fixed and Double Axial Photovoltaic Tracking System
Author(s): A. S. Abdelmonem, H. A. Refaey, R. I. Afify, and O. E. Abdellatif
Pages: 13-18 Paper ID:161002-8989-IJECS-IJENS Published: April, 2016
Abstract: The electrical performance of any photovoltaic solar cell is described by its current – voltage characteristic curve. Therefore, to improve the photovoltaic performance, a tracking of the sun is used. Thus, the present study represents a comparison between numerical model and experimental results of a fixed and double axial photovoltaic tracking system. The numerical simulations have been carried out correspond to the experimental setup. Therefore, the same dimensions, as well as operating conditions, apply to it, by using both Matlab and Comsol Multiphysics program version 4.2. Besides that, an experimental work is presented depending on the results conjured from the theoretical experience used in COMSOL Multiphysics. The paper reported the electrical performance (I-V characteristics curves, output power and electrical efficiency) of the photovoltaic cell with fixed and double axial tracking. The numerical results revealed that, for fixed PV system the efficiency of the PV modules is increased for both fixed and double axial tracking by about 12.5% and 14 % respectively. In addition, the double axial Sun tracking system module causing an increase in tracking module daily output power up to 23 % compared to that for a fixed module.
Keywords: Component: Photovoltaic systems; Tracking systems; COMSOL Multiphysics; MATLAB ; Solid work.
Full Text (.pdf)  International Journals Of Engineering and Sciences | 813 KB
Title: An Empirical Study of Pentesting IOS 9 Applications
Author(s): Sinan Ameen Noman, Haitham Ameen Noman
Pages: 19-24 Paper ID:165202-9494-IJECS-IJENS Published: April, 2016
Abstract: The mobile has been changed since Apple has released their first iPhone in 2007. Mobile applications have become more powerful than ever, this evolution has created a sufficient range of attacks that can be used on apps and grab a credential data from users who starts making activities on their mobile devices while on the go instead of using it on their own computers. This paper sheds the light on pentesting tools and techniques that can be conducted on iOS applications on a physical iDevice running iOS 9 rather than an emulator.
Keywords: Pentesting Tools, Pentesting Techniques, iOS 9.
Full Text (.pdf)  International Journals Of Engineering and Sciences | 781 KB
Title: Automated FPGA Power Characterization Methodology
Author(s): Dalia A. El-Dib, Yousra Alkabani, Magdy El-Moursy, and Heba A. Shawkey
Pages: 25-32 Paper ID:165702-8484-IJECS-IJENS Published: April, 2016
Abstract: Power characterization methodology for Field Programmable Gate Arrays (FPGAs) is described. The methodology includes putting an FPGA through a pre-determined set of measurements upon which a few calculations are needed to reach real leakage power and average dynamic power consumption of all FPGA units. Look Up Tables (LUTs), wires, and Flip Flops (FFs) are included in the presented methodology. The characterized power can be used to estimate the total power consumption of any design based on its total FPGA usage at a very early stage of the design. Since the characterized power is determined using direct measurements, these are claimed to represent a more accurate measure than those obtained by currently available simulation tools which give power values up to ten times higher than actual measured ones.
Keywords: ---
Full Text (.pdf)  International Journals Of Engineering and Sciences | 722 KB