A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Suganthi, K.
- Congestion Control in Wireless Sensor Networks Using Supervised Learning Method
Authors
1 Department of Computer Science and Engineering, Bannari Amman Institute of Technology, Sathyamangalam, IN
Source
Wireless Communication, Vol 8, No 4 (2016), Pagination: 128-132Abstract
Wireless Sensor Networks is a Wireless Network consisting of spatially distributed automous devices using sensors to monitor physical or environmental conditions. Recent applications on wireless sensor networks demand networks with high and consistent data load. The performance becomes a crucial factor, congestion remains a serious problem and it is a highly undesirable situation. Since its appearance creates additional overhead to the already heavily loaded network. Then congestion control algorithm need to be applied in order to mitigate congestion. In this approach, routing in sensor networks maintains information on neighbor states and potentially many other factors in order to make informed decisions. Challenges arise both in (a) performing accurate and adaptive information discovery and (b) processing/analyzing the gathered data to extract useful features and correlations. And from that quality of a link can be estimated and by using rule learner algorithm good quality link is detected. Through the link alternate path is selected to reroute the packets. This algorithm is used to increase throughput of the network and decreases the data delay.
Keywords
Alternate Path Routing, Congestion Control, Energy Efficiency, Wireless Sensor Networks.
- An Algorithm for Dexterous Scanning Neighbour Devices in Opportunistic Mobile Social Networks
Authors
1 Bannari Amman Institute of Technology, Sathyamangalam, TamilNadu, IN
2 Bannari Amman Institute of Technology, Sathyamangalam, TamilNadu, IN
Source
Networking and Communication Engineering, Vol 8, No 4 (2016), Pagination: 95-99Abstract
In personal mobile devices, information is exchanged between the devices by encountering each other. While, frequent scanning for opportunistic encounters would soon drain the battery on existing devices. We propose a new hybrid algorithm for neighbour discovery called the Amalgam algorithm a combination approach of STAR and PISTONSv2 algorithms. STAR is based on contact probe time, which dynamically selects the probing interval using both the short-term contact history and also the long-term history based on time. PISTONv2 is based on inter probe time calculation, which enables mobile devices dynamically alter the rate when searching for other devices, thus creating a fully decentralized autonomous network and also save energy. By combined approach of STAR and PISTONv2 called Amalgam algorithm which saves power consumptions of a battery and detect more encounters as compared to individual approach of STAR and PISTONv2 algorithm.
Keywords
Neighbour Discovery, Opportunistic Network, Decentralized, STAR, PISTONv2, Amalgam Algorithm, Inter Probe Time, Contact Probe Time.- Energy Efficient Event Tracking in Wireless Sensor Networks
Authors
1 TIFAC-CORE in Pervasive Computing Technologies, Velammal Engineering College, IN
2 Dept of Computer Technology, Madras Institute of Technology, Anna University, IN
Source
Wireless Communication, Vol 3, No 6 (2011), Pagination: 403-406Abstract
Advances in the wireless communications and the microelectronic technologies have been expediting the development of wireless sensor networks. Deploying a high number of sensors to increase the redundancy of the system can help increase the lifetime of the network. It is very important to reduce the energy consumption of wireless sensor networks in such high density networks. In this paper, hexagonal based deployment is used as a network topology to reduce the energy consumption by activating set of sensor nodes which cover the whole monitor area and remaining nodes kept in sleep node to save energy. We develop NS (Network Simulator) simulator to demonstrate the performance of the proposed algorithm. And also this algorithm implemented in event tracking applications of wireless sensor networks. For that, NS is extended to support the wireless sensor networks simulation.Keywords
Energy, Hexagonal Deployment, NS, WSN.- The BLIXER, Integrated Balun-LNA-Mixer for ZigBee Application
Authors
1 SRM University, Chennai - 603203, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 36 (2016), Pagination:Abstract
Objectives: The main objective of this paper is to design a Blixer using noise-cancelling technique and balun –LNA-Mixer for better performance. Methods: As studied in literature of mixers, it shows they have less bandwidth disadvantage. This paper is concentrated to realize a wide bandwidth mixer by keeping the real part of the impedance of all RF nodes low, and using this mixer there is no capacitive loading problem. Findings: By avoiding use of inductors, the on chip size of circuit will be reduced and also the bandwidth extension requirement is fulfilled. This gives less DC-voltage drop after IF filtering. The design is implemented and simulated using Advanced Design System tool in CMOS 0.18um technology. The noise figure of the final BLIXER is obtained as 0.6dB and that of LNA is less than 2dB. This results are one of the best seen for a BLIXER. Applications: This design is well suited for wideband ZigBee receiver in wireless communication systems.Keywords
Balun, Blixer, LNA, Mixer, Wideband.Full Text
- Asynchronizer Based Wireless Sensor System
Authors
Source
International Journal of Innovative Research and Development, Vol 3, No 3 (2014), Pagination:Abstract
In this article we propose the design of a GALS wrapper used in Network on Chip (NoC) based on standard cells. The GALS packaging embrace two announcement docks, 4-phase grasp circuits, records buffer and pointer synchronizer. The detailed aim of GALS wrapper is given and the circuits are verified with Verlog-HDL and executed in FPGA. The verified results shows that the wrapper provides fast and consistent communication for the subsystems working with different clocks of NoC.
Full Text