i-manager's Journal on Wireless Communication Networks (JWCN)


Volume 5 Issue 4 January - March 2017

Research Paper

A Novel Next Hop Selection Algorithm for Multi-Hop Wireless Sensor Networks

Hanafy Mahmoud Ali*
Assistant Professor, Department of Computers and Systems Engineering, Faculty of Engineering, Minia University, El Minia, Egypt.
Ali, H.M. (2017). A Novel Next Hop Selection Algorithm for Multi-Hop Wireless Sensor Networks. i-manager’s Journal on Wireless Communication Networks, 5(4), 1-9. https://doi.org/10.26634/jwcn.5.4.13552

Abstract

In this paper, the author has proposed a new route next-hop selection algorithm for Wireless Sensor Networks (WSNs) that is aimed towards reducing packet loss, end-to-end delay, and energy consumption. In this proposed algorithm, the forwarding nodes are selected through hop-by-hop estimation of QoS, and residual energy. The efficiency of the proposed routing algorithm is evaluated by using the NS-2 simulator. The simulation results show that the proposed algorithm provides a significant improvement in terms of energy consumption, the number of packets forwarded, an end to end delay, and packet delivery ratio compared to the existing routing protocol.

Research Paper

Energy Aware Clustering Algorithm for Wireless Sensor Networks

P. Santhanakumar* , G. Arun Sampaul Thomas**
* PG Scholar, Department of Computer Science and Engineering, SCAD College of Engineering and Technology, Tirunelveli, India.
** Assistant Professor and Associate Head, Department of Computer Science and Engineering, SCAD College of Engineering and Technology, Tirunelveli, India.
Santhanakumar, P., and Thomas, G.A.S. (2017). Energy Aware Clustering Algorithm for Wireless Sensor Networks. i-manager’s Journal on Wireless Communication Networks, 5(4), 10-14. https://doi.org/10.26634/jwcn.5.4.13553

Abstract

Clustering is a popular routing technique in configuring Wireless Sensor Networks (WSNs). It can determine the communications between all nodes to collect data in an efficient manner. It handles the main challenge of energyefficiency in WSNs, and can be used to re-configure the network according to changes in the nodes' conditions. In this paper, an energy aware clustering algorithm is proposed for utilizing the energy efficiency and prolonging the lifetime of the network. The proposed algorithm elects the Cluster Head based on the parameter of residual energy. The Cluster Head node gathers the information from its members and forwards it to the Base Station. The proposed algorithm constructs the virtual circle for balancing the energy consumption among the sensor nodes. The simulation results show that the proposed algorithm utilizes the energy efficiently and extends the lifetime of the network efficiently.

Research Paper

Dynamic Resource Allocation with Power Constraint in WCDMA Wireless Networks

Vandana Khare* , Y. Madhavee Latha**, D. Srinivasa Rao***
* Research Scholar, JNT University, Hyderabad, India.
** Principal, Malla Reddy Engineering College for Women, Hyderabad, India.
*** Professor, Department of Electronics and Communication Engineering, JNTUH, Hyderabad, India.
Khare, V., Latha, Y.M., Rao, D.S. (2017). Dynamic Resource Allocation with Power Constraint in WCDMA Wireless Networks. i-manager’s Journal on Wireless Communication Networks, 5(4), 15-19. https://doi.org/10.26634/jwcn.5.4.13554

Abstract

WCDMA is a Wideband Code Division Multiple Access technique. Because of high data rate, it is mainly used in the 3 generation mobile networks. In Centralized Call Admission Control (CCAC) technique, when a new call arrives, the system checks whether the call should be admitted or not on the basis of Signal to Interference Ratio (SIR), transmission power, and the network load. If the call is accepted, it will increase some interference to the ongoing calls. This new interference would degrade the performance of ongoing calls, increase the outage rate, and ultimately affects the Quality of Service of the network. Hence, to reduce the interference while improving Quality of Service in the WCDMA network, an efficient Resource Allocation with Power Constraint (PC) in the network is required for achieving a higher throughput with appropriate handoff, improved battery life as well as network performance. This paper proposes an algorithm for Resource Allocation with Power Constraint (PC) for real time traffic in WCDMA Network. The simulation result shows that the proposed scheme can significantly reduce power consumption and increase throughput with less delay.

Research Paper

Design and Simulation of Digital Beacon Receiver

Revathi* , P. Parvathi**, G. Hemachandra***
* PG Scholar, Department of Electronics and Communication Engineering, Sri Vidyanikethan Engineering College, Tirupati, India.
** Scientist/Engineer-SE, National Atmospheric Research Laboratory (NARL), Gadanki, Tirupati, India.
*** Assistant Professor, Department of Electronics and Communication Engineering, Sri Vidyanikethan Engineering College, Tirupati, India.
Revathi, V., Parvathi, P., and Hemachandra, G. (2017). Design and Simulation of Digital Beacon Receiver. i-manager’s Journal on Wireless Communication Networks, 5(4), 20-26. https://doi.org/10.26634/jwcn.5.4.13555

Abstract

The detailed simulation of Digital Beacon Receiver consists of Low Noise Block Convertor (LNBC) and L-band Down Convertor (LBDC) by using Keysight Technologies Advanced Design System (ADS) Software. In the propagation path between satellite to ground stations, some natural phenomena, such as atmospheric gases, water vapour, oxygen molecules, clouds, rain, dust, fog, existing in different layers of the atmosphere, including troposphere can cause some impairment on the availability and quality of satellite link service periods. This natural phenomenon cause errors and problems, such as attenuation change in polarization, fading delay, and dispersion. Particularly at higher frequencies such as Ku and Ka bands, effects of those propagation phenomena will not be neglectable and they should be considered. For reliable and secure satellite communication, theoretical and experimental propagation study in different frequencies and region is essential. ISRO has setup two beacon signals at 20.2 and 30.5 GHz on board GSAT-14 for this purpose. There are different methods to study satellite wave propagation, such as radar, radiometer, signal beacon method, and satellite beacon methods. Satellite beacon method is one of the most important reliable and inexpensive methods in comparison with the other methods. This paper presents the design simulation of the receiver setup for the above purposes.

Research Paper

Design of Microwave Filter using Coupled Line Technique

Pooja Gupta* , Ashutosh Kumar**
* Assistant Professor, Department of Electronics and Communication Engineering, Kanpur Institute of Technology, Kanpur, India.
** DRDO Scientist, RCMA, Kanpur, India.
Gupta, P., and Kumar, A. (2017). Design of Microwave Filter using Coupled Line Technique. i-manager’s Journal on Wireless Communication Networks, 5(4), 27-31. https://doi.org/10.26634/jwcn.5.4.13556

Abstract

This paper presents the design of narrow band-pass filter and wide band-pass filter using microstrip coupled line structure. The narrow band-pass filter is designed to operate at dual center frequencies of 1.227 GHz and 1.575 GHz for GPS and the wide band-pass filter to operate at X-band segment (8-12 GHz) of microwave frequency spectrum with center frequency of 10 GHz. The device dimensions are calculated using MATLAB coding and the simulative analysis of the filter is done using ADS and microwave studio software. The filter response by CST and ADS are compared using MATLAB.

Review Paper

Sensory Life in Sensory World

Mohammad Samadi Gharajeh*
Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
Gharajeh, M.S. (2017). Sensory Life in Sensory World. i-manager’s Journal on Wireless Communication Networks, 5(4), 32-44. https://doi.org/10.26634/jwcn.5.4.13557

Abstract

In the recent decades, sensors have affected on our life in various fields, including research activities, standardization procedures, and industrial investments. Various types of sensors (e.g., pressure, temperature, and humidity) can be used in Wireless Sensor Networks (WSNs) to design and implement some of the important applications, such as environmental monitoring, healthcare systems, and military issues. WSNs consist of the low-power, large-scale, and low-cost sensor nodes. The nodes measure phenomena data (e.g., smoke density) to transmit the measured data to a center (e.g., sink or base station). Routing, security, and fault tolerance are some of the crucial challenges in sensor networks. This paper describes various physical features and key usages of the popular sensors. Furthermore, three WSNs applications in monitoring, healthcare, and military are considered subsequently. Since sensor localization and data mining are two important topics in WSNs, their categories and characteristics are addressed too. Evaluation results show the performance of sensor networks compared to radio-frequency identification (RFID) in terms of utilization, purpose, components, mobility, power supply, programmability, and deployment. Besides, some of the WSNs simulators are compared to each other in terms of computation time and memory usage.