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User Selective Encryption Method for Securing MANETs

10.11591/ijece.v8i5.pp3103-3111
Amal Ahmad , Shereen Ismail
Security issue is getting important day by day. At present, there are a variety of methodologies to provide protection for data confidentiality. MANETs have lots of security challenges than traditional networks like infrastructureless and self-organizing requirements. As the MANETs are dynamic networks that’s make every transmission in such networks vulnerable to many attacks and improving security level becomes a main issue. This paper introduces a user selective encryption method by operating Data Encryption Standard (DES), Triple DES (3DES), Advanced Encryption Standard (AES) and the Diffie-Hellman Key Exchange (DHKE) protocol for key management in order to improve MANET security. Through the Network Simulator-2 (NS-2), the we investigate the performance of the proposed method in terms of data transfer time and network throughput for different data sizes and different sender-to-receiver number of hops. The results show the superiority of AES over other encryption algorithms. Furthermore, the effectiveness of our proposed method is verified through comparing our results with those obtained from previous studies.
Volume: 8
Issue: 5
Page: 3103-3111
Publish at: 2018-10-01

Hybrid Time-Power Switching Protocol of Energy Harvesting Bidirectional Relaying Network: Throughput and Ergodic Capacity Analysis

10.12928/telkomnika.v16i5.9118
Tran Hoang Quang; Ton Duc Thang University Minh
In this paper, we investigate system performance in term of throughput and ergodic capacity of the hybrid time-power switching protocol of energy harvesting bidirectional relaying network. In the first stage, the analytical expression of the system throughput and ergodic capacity of the model system is proposed and derived. In this analysis, both delay-limited and delay-tolerant transmission modes are presented and considered. After that, the effect of various system parameters on the proposed system is investigated and demonstrated by Monte-Carlo simulation. Finally, the results show that the analytical mathematical and simulated results match for all possible parameter values for both schemes.
Volume: 16
Issue: 5
Page: 1947-1956
Publish at: 2018-10-01

Exact Outage Performance Analysis of Amplify-and-forward-aware Cooperative NOMA

10.12928/telkomnika.v16i5.9823
Dinh-Thuan; Ton Duc Thang University Do , Tu-Trinh T.; Industrial University of Ho Chi Minh City Nguyen
In this paper, new radio access scheme that combines Amplify-and-Forward (AF) relaying protocol and non-orthogonal multiple access (NOMA) system is introduced. In particular, different scenarios for fixed power allocation scheme is investigated. In addition, the outage probability of both weak and strong user is derived and provided in closed-form expressions. Such outage is investigated in high SNR scenario and comparison performance between these NOMA scenarios is introduced. Numerical simulations are offered to clarify the outage performance of the considered scheme if varying several parameters in the existing schemes to verify the derived formulas.
Volume: 16
Issue: 5
Page: 1966-1973
Publish at: 2018-10-01

An Event-based Middleware for Syntactical Interoperability in Internet of Things

10.11591/ijece.v8i5.pp3784-3792
Eko Sakti Pramukantoro , Husnul Anwari
Internet of Things (IoT) connecting sensors or devices that record physical observations of the environment and a variety of applications or other Internet services. Along with the increasing number and diversity of devices connected, there arises a problem called interoperability. One type of interoperability is syntactical interoperability, where the IoT should be able to connect all devices through various data protocols. Based on this problem, we proposed a middleware that capable of supporting interoperability by providing a multi-protocol gateway between COAP, MQTT, and WebSocket. This middleware is developed using event-based architecture by implementing publish-subscribe pattern. We also developed a system to test the performance of middleware in terms of success rate and delay delivery of data. The system consists of temperature and humidity sensors using COAP and MQTT as a publisher and web application using WebSocket as a subscriber. The results for data transmission, either from sensors or MQTT COAP has a success rate above 90%, the average delay delivery of data from sensors COAP and MQTT below 1 second, for packet loss rate varied between 0% - 25%. The interoperability testing has been done using Interoperability assessment methodology and found out that ours is qualified.
Volume: 8
Issue: 5
Page: 3784-3792
Publish at: 2018-10-01

Adaptive Multi-state Millimeter Wave Cell Selection Scheme for 5G communication

10.11591/ijece.v8i5.pp2967-2978
Mothana L Attiah , Azmi Awang Md Isa , Zahriladha Zakaria , Nor Fadzilah Abdullah , Mahamod Ismail , Rosdiadee Nordin
Millimeter wave bands have been introduced as one of the most promising solutions to alleviate the spectrum secrecy in the upcoming future cellular technology (5G) due the enormous amount of raw bandwidth available in these bands. However, the inherent propagation characteristics of mmWave frequencies could impose new challenges i.e. higher path loss, atmospheric absorption, and rain attenuation which in turn increase the outage probability and hence, degrading the overall system performance. Therefore, in this paper, a novel flexible scheme is proposed namely Adaptive Multi-State MmWave Cell Selection (AMSMC-S) through adopting three classes of mmWave base stations, able to operate at various mmWave carrier frequencies (73, 38 and 28 GHz). Two mmWave cellular Grid-Based cell deployment scenarios have been implemented with two inter-site-distances 200 m and 300 m, corresponding to target area of (2.1 km2) and (2.2 km2). The maximum SINR value at the user equipment (UE) is taken in to consideration to enrich the mobile user experience. Numerical results show an improvement of overall system performance, where the outage probability reduced significantly to zero while maintaining an acceptable performance of the 5G systems with approximately more than 50% of the mobile stations with more than 1Gbps data rate. 
Volume: 8
Issue: 5
Page: 2967-2978
Publish at: 2018-10-01

Combination of Flex Sensor and Electromyography for Hybrid Control Robot

10.12928/telkomnika.v16i5.7028
Muhammad Ilhamdi; Universitas Andalas Rusydi , Muhammad Ismail; Universitas Andalas Opera , Andrivo; National University of Singapore Rusydi , Minoru; Gifu University Sasaki
The alternative control methods of robot are very important to solved problems for people with special needs. In this research, a robot arm from the elbow to hand is designed based on human right arm. This robot robot is controlled by human left arm. The positions of flex sensors are studied to recognize the flexion-extension elbow, supination-pronation forearm, flexion-extension wrist and radial-ulnar wrist.The hand of robot has two function grasping and realeasing object. This robot has four joints and six flex sensors are attached to human left arm. Electromyography signals from face muscle contraction are used to classify grasping and releasing hand. The results show that the flex sensor accuracy is 3.54° with standard error is approximately 0.040 V. Seven operators completely tasks to take and release objects at three different locations: perpendicular to the robot, left-front and right-front of the robot. The average times to finish each task are 15.7 ssecond, 17.6 second and 17.1 second. This robot control system works in a real time function. This control method can substitute the right hand function to do taking and releasing object tasks.
Volume: 16
Issue: 5
Page: 2275-2286
Publish at: 2018-10-01

SHE Control for PV System Connected to the Grid

10.12928/telkomnika.v16i5.9518
Maha; USMBA FST FEZ Khanfara , Rachid EL; USMBA FST FEZ Bachtiri , Oumaima; USMBA FST FEZ Khanfara , Mohammed; USMBA FST FEZ Boussetta , Karima EL; USMBA FST FEZ Hammoumi , Imane; USMBA FST FEZ Idrissi
In this article, we have proposed a new control of a PV system connected to the grid. The goal is to reduce current and voltage harmonicsfor increasing the quality of delivered energy. First, we have modeled a PV panel. Then we have dimensioned the BOOST converter by finding L and C values. Next, we have used Perturb and Observe (P&O) Maximum Power Point Control (MPPT) to improve energy efficiency. Finally, We have developed a control of single-phase H-bridge inverter in order to eliminate the 3rd,5th,7th and 9th harmonics order, and added an LCLTo connect the PV inverter to the grid, an LCL betweenthe inverter and the grid. Theperformance of the proposed system was tested by computing spectrum and THD usingMatlab/Simulink software. The proposed architecture provides better Total Harmonic Distortion (THD) which satisfy the EN50160 requirement the THD must be less than 4.66%. We found that THD was decreased from 61.93% to 0.04%.
Volume: 16
Issue: 5
Page: 2374-2384
Publish at: 2018-10-01

Control Strategy for Distributed Integration of Photovoltaic and Battery Energy Storage System in Micro-Grids

10.12928/telkomnika.v16i5.10249
Alias; Universiti Teknikal Malysia Melaka Khamis , Mohd Ruddin; Universiti Teknikal Malysia Melaka Ab. Ghani , Gan Chin; Universiti Teknikal Malaysia Melaka Kim , Mohd Shahrieel; Universiti Teknikal Malysia Melaka Mohd Aras , Muhammad Aswad; Universiti Teknikal Malysia Melaka Bin Zabide , Tole; Universitas Ahmad Dahlan Sutikno
The micro-grid deployments are growing with independently, power system designers, manufacturers and researchers for the applications where the loads are more efficient association with extra output sources such as Battery Energy Storage System (BESS), and Photovoltaic (PV) systems. Using renewable source as main sources for micro-grid system also can avoid from the pollution to occur. Energy storage when combined with PV system can provide a stronger economic performance, as well as an added benefit of backup power for critical loads. This project proposed control strategies for integration of BESS and PV in a micro-grid. The operation enables the maximum PV and BESS utilization during different operating condition of the micro-grid, grid connected, islanded mode or a process between these two operations. The project will focus on analyzing the performance between photovoltaic system and battery in the simulations of micro-grids system and validate the simulation result using MATLAB/SIMULINK software. After the simulation was analyzed, the understanding of benefit in using renewable energy source as main power supply with support from battery energy storage to supply the power to the loads and power managements is realized in the different modes on micro-grid which is grid connected or islanded states. When the power generation from PV system was not enough to accommodate electric loads, the BESS or from secondary side of transformer will supply the insufficient power.
Volume: 16
Issue: 5
Page: 2415-2427
Publish at: 2018-10-01

Innovative Model for Logo Counseling Website

10.12928/telkomnika.v16i5.7593
Jacob Daan; Satya Wacana Christian University Engel , Ventje Jeremias Lewi; Harapan Bangsa Institute of Technology Engel , Evangs; Satya Wacana Christian University Mailoa
Logo counseling is a counseling model specifically to treat low spiritual self-esteem problem affecting the life and attitudes of college students. Nevertheless, the problem relies on distance, time, and psychological burdens which preventing face-to-face logo counseling. By reviewing past research regarding online counseling practices, the innovative model for online logo counseling was designed and then demonstrated via logo counseling website. There are four objectives and thirty-five specifications defined in the model. The result showed that logo counseling website is helpful and easy to understand. Further research needed to address the issue of security and confidentiality, furthermore future research needed to examine the integration of text-mining and multimedia analysis techniques to better helping counselors in online counseling intervention.
Volume: 16
Issue: 5
Page: 2111-2117
Publish at: 2018-10-01

Exploiting Outage Performance of Wireless Powered NOMA

10.12928/telkomnika.v16i5.9385
Dinh-Thuan; Industrial University of Ho Chi Minh City Do , Chi-Bao; Industrial University of Ho Chi Minh City Le
Considering a dual-hop energy-harvesting (EH) non-orthogonal multiple access (NOMA) relaying system, this paper considers novel relaying protocol based on time power switching-based relaying (TPSR) and power switching-based relaying (PSR) schemes for two kinds of gain factors regarding amplify-and-forward mode. We introduce novel system model relaying network with impacts of energy harvesting fractions and derive analytical expressions for outage probability for the information transmission link. It confirmed that right selection of power allocation for NOMA to obtain optimal performance as compared study in two considered schemes. We also explore impacts of other key parameters of system to outage performance evaluation for different channel models. Simulation results are presented to corroborate the proposed methodology.
Volume: 16
Issue: 5
Page: 1907-1917
Publish at: 2018-10-01

AC-Based Differential Evolution Algorithm for Dynamic Transmission Expansion Planning

10.12928/telkomnika.v16i5.10578
Ibrahim; Universiti Kuala Lumpur-British Malaysian Institute (UniKL BMI) Alhamrouni , Mohamed; Universiti Sains Malaysia Salem , Azhar Bin; Universiti Teknologi Malaysia Khairuddin , Jamilatul; Universiti Kuala Lumpur-British Malaysian Institute (UniKL BMI) Lilik , Awang; Universiti Teknologi Malaysia Jusoh , T.; Universitas Ahmad Dahlan Sutikno
This work proposes a method based on a mixed integer nonlinear non-convex programming model to solve the multistage transmission expansion planning (TEP). A meta-heuristic algorithm by the means of differential evolution algorithm (DEA) is employed as an optimization tool. An AC load flow model is used in solving the multistage TEP problem, where accurate and realistic results can be obtained. Furthermore, the work considers the constraints checking and system violation such as real and power generation limits, possible number of lines added, thermal limits and bus voltage limits. The proposed technique is tested on well known and realistic test systems such as the IEEE 24 bus-system and the Colombian 93-bus system. The method has shown high capability in considering the active and reactive power in the same manner and solving the TEP problem. The method produced improved good results in a fast convergence time for the test systems.
Volume: 16
Issue: 5
Page: 2316-2330
Publish at: 2018-10-01

802.11p Profile Adaptive MAC Protocol for Non-Safety Messages on Vehicular Ad Hoc Networks

10.11591/ijeecs.v12.i1.pp208-217
Shamsul J Elias , M. Elshaikh , M. Yusof Darus , Jamaluddin Jasmis , Angela Amphawan
Vehicular Ad hoc Networks (VANET) play a vital Vehicle to Infrastructure (V2I) correspondence frameworks where vehicle are convey by communicating and conveying data transmitted among each other. Because of both high versatility and high unique network topology, congestion control should be executed distributedly. Optimizing the congestion control in term of delay rate, packet delivery ratio (PDR) and throughput could limit the activity of data packet transmissions. These have not been examined altogether so far – but rather this characteristic will be fundamental for VANET system execution and network system performance. This paper exhibits a novel strategy for congestion control and data transmission through Service Control Channel (SCH) in VANET. The Taguchi strategy has been connected in getting the optimize value of parameter for congstion control in highway environment. This idea lessens the pointless activity of data transmission and decreases the likelihood of congested in traffic in view of execution for measuring the delay rate, packet delivery ratio (PDR) and throughput. The proposed execution performance is estimated with the typical VANET environment in V2I topology in highway driving conditions and the simulation results demonstrate and enhance network execution performance with effective data transmission capacity.
Volume: 12
Issue: 1
Page: 208-217
Publish at: 2018-10-01

A Novel Low Cost Fractal Antenna Structure for ISM and WiMAX Applications

10.12928/telkomnika.v16i5.8527
Driss El; Hassan 1st University Nabaoui , Abdelali; Hassan 1st University Tajmouati , Jamal; Hassan 1st University Zbitou , Ahmed; Hassan 1st University Errkik , Larbi; Hassan 1st University Elabdellaoui , Mohamed; ESEO Angers Latrach
Different fractal structures have been widely used in many antennas designs for various applications. A fractal antenna is used for miniaturization and multiband operation. This paper presents a design of a dual-band fractal antenna fed by coplanar waveguide (CPW) transmission line. The proposed antenna is designed and fabricated on an FR4 substrate with a volume of 70x60x1.6mm3, resonates at 2.42-2.62GHz and 3.40-3.65GHz with a return loss less than -10dB. The design and simulation process is carried out by using CST-MW studio electromagnetic solver. Simulation results show that the resulting antenna exhibits an interesting dual frequency resonant behavior making it suitable for dual band communication systems including the ISM and WiMAX applications. Concerning the fabrication and measurement of the final prototype of this antenna, a good agreement is found between simulation and measurement results for both frequency bands.
Volume: 16
Issue: 5
Page: 1901-1906
Publish at: 2018-10-01

Improvement of Pitch Motion Control of an Aircraft Systems

10.12928/telkomnika.v16i5.7434
Aishah; Universiti Teknologi Malaysia Johari , Fitri; Universiti Teknologi Malaysia Yakub , Hatta; Universiti Teknologi Malaysia Ariff , Zainudin A.; Universiti Teknologi Malaysia Rasid , Shamsul; Universiti Teknologi Malaysia Sarip , Rudzidatulm Akmam; Universiti Teknologi Malaysia Dziyauddin , Mohd Zamzuri; Universiti Teknikal Malaysia Melaka Ab Rashid , Azizul; Universiti Teknologi Malaysia Azizan , Yasuchika; Transportation Systems & Electric Co Mori
The movement of the aircraft pitch is very important to ensure the passengers and crews are in intrinsically safe and the aircraft achieves its maximum stability.The objective of this study is to provide a solution to the control system that features particularly on the pitch angle motion of aircraft systemin order to have a comfort boarding. Three controllers were developed in these projects which wereproportional integral derivative (PID), fuzzy logic controller (FLC), and linear quadratic regulator (LQR) controllers. These controllers will help improving the pitch angle and achievingthe target reference. By improving the pitch motion angle, the flight will be stabilized and in steady cruise (no jerking effect), hence provides all the passengers withthe comfort zone. Simulation results have been done and analyzed using Matlab software. The simulation results demonstrated LQR and FLC were better than PID in the pitch motion system due to the small error performance. In addition, withstrong external disturbances, a single controller is unable to control the system, thus, the combination of PID and LQR managed to stabilize the aircraft.
Volume: 16
Issue: 5
Page: 2263-2274
Publish at: 2018-10-01

Optimizing Time and Effort Parameters of COCOMO II using Fuzzy Multi-Objective Particle Swarm Optimization

10.12928/telkomnika.v16i5.9698
Kholed; Fatoni University Langsari , Riyanarto; Institut Teknologi Sepuluh Nopember (ITS) Sarno , Sholiq; Institut Teknologi Sepuluh Nopember Sholiq
Estimating the efforts, costs, and schedules of software projects is a frequent challenge to software development projects. A bad estimation will result in bad management of a project. Various models of estimation have been defined to complete this estimate. The Constructive Cost Model II (COCOMO II) is one of the most famous models as a model for estimating efforts, costs, and schedules. To estimate the effort, cost, and schedule in project of software, the COCOMO II uses inputs: Effort Multiplier (EM), Scale Factor (SF), and Source Line of Code (SLOC). Evidently, this model is still lack in terms of accuracy rates in both efforts estimated and time of development. In this paper, we introduced to use Gaussian Membership Function (GMF) of Fuzzy Logic and Multi-Objective Particle Swarm Optimization (MOPSO) method to calibrate and optimize the parameters of COCOMO II. It is to achieve a new level of accuracy better on COCOMO II. The Nasa93 dataset is used to implement the method proposed. The experimental results of the method proposed have reduced the error downto 11.89% and 8.08% compared to the original COCOMO II. This method proposed has achieved better results than previous studies.
Volume: 16
Issue: 5
Page: 2199-2207
Publish at: 2018-10-01
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