i-manager's Journal on Communication Engineering and Systems (JCS)


Volume 6 Issue 3 May - July 2017

Research Paper

SMIER: An SVM and MCDA Based, Intelligent Approach for Enhanced Reliability in Wireless Sensor Networks

Mohammad Samadi Gharajeh* , Maryam Askari Zivayeki**, Sareh Askari***
* Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
** Department of Computer Engineering, Bostanabad Branch, Islamic Azad University, Bostanabad, Iran.
*** Department of Computer Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
Gharajeh, M. S., Zivayeki, M. A., Askari, S. (2017). SMIER: An SVM and MCDA Based, Intelligent Approach For Enhanced Reliability In Wireless Sensor Networks. i-manager’s Journal on Communication Engineering and Systems, 6(3), 1-8. https://doi.org/10.26634/jcs.6.3.13611

Abstract

Reliability is one of the big challenges in Wireless Sensor Networks (WSNs). It can be improved by using some of the intelligent and knowledge-based mechanisms, such as Support Vector Machine (SVM) and Multiple Criteria Decision Analysis (MCDA). This paper proposes an SVM and MCDA based, intelligent approach for enhanced reliability in WSNs, called SMIER. It is considered for a cluster-based sensor network in a way that every Cluster-Head (CH) selects one of its Non Cluster-Head (NCH) nodes as a backup node in a period of time. Initially, the suggested SVM algorithm determines failure probability of each NCH node based on number of events and average distance to events. Afterward, the suggested MCDA controller calculates success rate of the NCH node by using three parameters, including remaining energy, distance, and failure probability. Simulation results show that the proposed approach surpasses some of the existing works in terms of packet delivery ratio, number of alive nodes, and average remaining energy.

Research Paper

Anti-jamming performance of adaptive chaos based CDMA system in flat fading environment with imperfect channel estimation

Meher Krishna Patel* , Stevan M. Berber**, Kevin W. Sowerby***
* Research Scholar, Department of Electrical and Computer Engineering, University of Auckland, New Zealand.
** Department of Electrical and Computer Engineering at The University of Auckland, New Zealand.
*** Region 10 Representative, IEEE Admission and Advancement Committee.
Patel, M. K., Berber, S. M., Sowerby, K. W. (2017). Anti-Jamming Performance of Adaptive Chaos Based CDMA System in Flat Fading Environment With Imperfect Channel Estimation i-manager’s Journal on Communication Engineering and Systems, 6(3), 9-14. https://doi.org/10.26634/jcs.6.3.13612

Abstract

This paper presents the theoretical anti-jamming performance of adaptive multiuser DS-CDMA system with imperfect channel estimation in flat fading channel environment. Pilot symbols are used to estimate the fading coefficients using Least Mean Square (LMS) algorithm. Further, pilot data are added to users' data. Slow switching pulse noise jammer is considered in the work and the effect of imperfect channel estimation on Bit Error Rate (BER) is studied. It has been shown analytically that channel estimator reduces the phase distortion produced by channel, whereas amplitude distortion remains unaffected. Under the perfect synchronization assumption, probability of error in closed form is derived.

Research Paper

Design of circular ring-? shape Dual band Micro strip patch Antenna

Sumit Gupta* , Toolika Srivastava**
* PG Scholar, Department of Electronics and Communication Engineering, Dr. A.P.J. Abdul Kalam Technical University, Lucknow, India.
** Assistant Professor, Department of Electronics and Communication Engineering, Kanpur Institute of Technology, Kanpur, India.
Gupta, S., and Srivastava, T. (2017). Design of Circular Ring-? Shape Dual-Band Microstrip Patch Antenna. i-manager’s Journal on Communication Engineering and Systems, 6(3), 15-19. https://doi.org/10.26634/jcs.6.3.13613

Abstract

Microstrip antennas are the stronger candidate among all the wireless applications. This paper proposes the designing and use of patch antenna with circular ring-π-shaped slot to achieve a dual band operation in WiMAX and WLAN standards. The circular ring-π slot designed on patch antenna resonates at 3.33 GHz and 5.06 GHz frequencies. The antenna consists of coaxial line-fed square patch embedded with a narrow and symmetrical circular π-shaped slot to generate such a dual-band resonance. The observed bandwidths are 6.32% and 1.28% at 3.33 GHz and 5.06 GHz, respectively. The generated return losses at these resonant frequencies are -19.84 dB and -21.74 dB.

Research Paper

Performance Analysis Of Millimeter Wave Generation Through Frequency 12-Tupling Using Mach-Zehnder Modulator in Radio Over Fiber System

Kuldeep Singh* , Ajay Kumar**, Abhimanyu Nain***
* PG Scholar, Department of Electronics and Communication Engineering, Guru Jambheshwar University of Science and Technology, Hisar, India.
**-*** Assistant Professor in the Department of Electronics and Communication Engineering, Guru Jambheshwar University of Science & Technology, Hisar, India.
Singh, K., Kumar, A., Nain, A. (2017). Performance Analysis of Millimeter Wave Generation Through Frequency 12-Tupling Using Mach-Zehnder Modulator In Radio Over Fiber System. i-manager’s Journal on Communication Engineering and Systems, 6(3), 20-24. https://doi.org/10.26634/jcs.6.3.13614

Abstract

this paper, millimeter wave is generated through frequency 12-tupling concept using 10 GHz Radio Frequency Local Oscillator (RFLO) and parallel connected Dual Drive Mach-Zehnder Modulator (DD-MZM) in Radio-over-Fiber system (RoF). Two optical sidebands are generated by adjusting the voltage of the RF local oscillator, phase shift of the phase shifter and DC bias of DD-MZM. Optical sidebands have optical sideband suppression ratio 25 dB. There is no need of the optical filter in this model. The proposed scheme eliminates the need of extremely high frequency RF local oscillator. A simulative investigation is performed over a distance of 15 km and the output is analyzed in terms of BER, Q-factor, and eye diagrams. It is reported that the generated sixth order sideband supports good transmission up to the data rate of 2.5 Gbps.

Research Paper

Simulation of Cantilever Force Sensor based on Ring Resonator structure

Anjali S. Sanghvi* , Vikas Sahu**, Sharad Mohan Shrivastava***
* PG Scholar, Department of Electronics and Communication Engineering, Chhattisgarh Swami Vivekanand Technical University, Bhilai, CG, India.
**-*** Assistant Professor, Department of Electronics and Telecommunication Faculty of Engineering & Technology, Shri Shankaracharya Technical Campus, Bhilai, CG, India.
Sanghvi, A. S., Sahu, V., Shrivastava, S. M., (2017). Simulation of Cantilever Force Sensor Based on Ring Resonator Structure. i-manager’s Journal on Communication Engineering and Systems, 6(3), 25-30. https://doi.org/10.26634/jcs.6.3.13615

Abstract

Optical sensors are being considered for lab-on-a-chip applications due to its small size, compatibility, and passive behaviour. Microcantilever based sensors have been demonstrated to be extremely versatile sensors and having its potential applications in chemical, biological, and physical sciences. This paper presents a platform in optical sensors mainly for hexagonal photonic crystals, which engenders high Quality Factor and Sensitivity. In this work, optical ring resonator has been integrated on cantilever beams for force sensing applications. Plane Wave Expansion, Finite Difference Time Domain method, and Finite Element Method have been used for simulations.

Research Paper

High Spatial Multiplicity Enhancement for Dense SDM Using Multi-Core Few-Mode or Multi-Mode Fiber

Nirmala Tirkey* , Vikas Sahu**, Sharad Mohan Shrivastava***
* PG Scholar, Department of Electronics and Communication Engineering, Shri Shankracharya Technical Campus, Bhilai, CG, India.
**-*** Assistant Professor, Department of Electronics and Telecommunication, Faculty of Engineering & Technology, Shri Shankracharya Technical Campus, Bhilai, CG, India.
Tirkey, N., Sahu, V., Shrivastava, S. M., (2017). High Spatial Multiplicity Enhancement for Dense SDM Using Multi-Core Few-Mode Or Multi-Mode Fiber. i-manager’s Journal on Communication Engineering and Systems, 6(3), 31-38. https://doi.org/10.26634/jcs.6.3.13616

Abstract

The authors review the recent progress of Dense Space Division Multiplexing (DSDM) technologies using few-mode or multi-mode and multi-core fibers in this paper. It is shown that DSDM with high spatial density and large spatial multiplicity is effective for greatly expanding transmission capacity. In order to expand the capacity of the optical system, it has accelerated the development of high capacity DSDM transmission. The main objective of this project is to deploy a24 multi core fiber with 6 multi mode, thus achieving the high spatial channel count up to (N×M=144). An analysis has been carried out for low crosstalk (XT) and low differential mode delay. Also it has been observed for confinement electric field, effective mode index (n ), bending radius (R), core pitch (Δ), coupling coefficient (k).