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In this paper the effect of back off factor on exponential algorithm is analyzed and binary exponential algorithm is implemented in Mat lab. Binary Exponential Algorithm is widely used as a network congestion avoidance or collision resolution protocol. The detailed analysis of saturation throughput is done in this work. This work also covers packet's medium access delay for a given number of node...
Various techniques have been developed in attempt to minimize congestion in uniformly distributed networks. In this paper, a new algorithm, load balanced congestion adaptive routing (LBCAR) algorithm has been proposed for randomly distributed networks in which two metrics: traffic load density and life time associated with a routing path, have been used to determine the congestion status and weakest...
Recent Day Communication between ends is facilitated by the development in the area of wired and wireless networks. The end to end devices like mobiles, handheld and palm size PC's have limited capability for computation, display capacity and bandwidth. This augment, for ways for communicating large data files like video, in highly compressed and acceptable quality over the limited available bandwidth...
A vehicular ad-hoc network (VANET), is an instance of intelligent transportation system that provides vehicle-to-vehicle communication aided by road side infrastructure for in-vehicle entertainment and safer road environment. VANET is characterized by highly mobile vehicles, predetermined topology and the requirement of reliable time bound message delivery over error prone shared wireless medium....
Resolution is a big issue in SOC (system On Chip) while dealing with number of master trying to sense a single data bus. The effectiveness of a system to resolve this priority resides in its ability to logical assignment of the chance to transmit data width of the data, response to the interrupts etc. The purpose of this paper is to propose the scheme to implement reconfigurable architecture so that...
The performance of the routing protocols in mobile Ad hoc networks degrades with increasing traffic load. Many routing protocols for such networks have been proposed so far. Amongst the most popular ones are Ad hoc On-demand Distance Vector (AODV), Destination-Sequenced Distance-Vector Routing protocol (DSDV), Dynamic Source Routing Protocol (DSR). In this paper we present our observations regarding...
Modern computer system rely more and more on -- chip communication protocol to exchange data. System-on-chip (SoC) designs use bus protocols for high performance data transfer among the Intellectual Propert (IP) cores. These protocols incorporate advanced features such as pipelining, burst and split transfers. In this paper, we describe a case study for different AMBA SOC bus protocol and their performance...
The routing protocols are the backbone to provide efficient call services in mobile ad hoc networks, in terms of both performance and reliability. Many routing protocols for such networks have been proposed so far. Amongst the most popular ones are Ad hoc On-demand Distance Vector (AODV), Destination-Sequenced Distance-Vector Routing protocol (DSDV), Dynamic Source Routing Protocol (DSR). This paper...
This paper is intended to present the design procedure for microstrip filters using artificial neural networks to provide better resolution and cutoff characteristics. The design concept has been evaluated with specific design of Low pass filters at the application specific frequencies. In this design procedure, synthesis is defined as the forward side and then analysis as the reverse side of the...
Ad-hoc network is a self organizing and adaptive in nature. Since it is a dynamic multihop wireless network and established by a cluster of mobile nodes on a shared wireless channel. The transitive closure of the neighborhood of all the hosts or nodes in the set of mobiles under consideration forms network. Each node is potentially a router and it is possible to dynamically establish routes by changing...
This paper presents a profile based modeling method for generation of realistic mobility pattern for vehicles. It is assumed the profile of the motion of vehicles has a Gaussian profile with different parameters. A driver, first, selects the source, destination and his path and then, selects a profile accordingly. This paper also addresses the issues of lane changing, overtaking, selection of profile...
Mobile network has become need of the hour to suit the requirement of day today technological advancements and their effective utilization. In this paper we have investigated the forward error correction techniques. This is basically utilized for enhancing the efficiency and accuracy of information transmitted over the wireless channel. In this paper basic principle of adding some redundancy to the...
This paper addresses the problem of sustaining the privacy of a vehicle in a vehicular ad hoc network (VANET). In a VANET, vehicles broadcast information as they move on the road. The location of a vehicle can estimated using localization techniques and its identity can be read from its messages. A link can be established between the physical vehicle through localization and its identity is a threat...
The paper presents a multi-hop adaptive and iterative localization (MAIL) algorithm for localization wireless sensor network (WSN) nodes. The present study determines the uncertainty in the localization of nodes caused by the variation in the received signal strength or in the angle of arrival of a signal received by such nodes. An iterative localization algorithm is then proposed to decrease this...
Wireless sensor network is need of present era or advanced technology. In this paper we have presented the details of methodology followed for implementation of a wireless sensor network in a process plant for based solution for data acquisition in a process plant. Due to its specific approach the solution not only acquires the data but also serves very effectively as a maintenance and diagnostic...
To maintain high performance in communication systems, it is required have optimal design and analysis of antenna for RFID tags at UHF and Microwave Frequency. In this approach paper the main focus is on the specific characteristics of RFID for advanced applications in current development of RFID antenna. To reduce size of antenna meander line structure of antenna is adopted. The antenna modeling...
This paper presents the general design of microstrip antennas using artificial neural networks for rectangular patch geometry. The design consists of synthesis in the forward side and then analyzed as the reverse side of the problem. In this work, the neural network is employed as a tool in design of microstrip antennas. The neural network training algorithms are used in simulation of results for...
Handoff is the mechanism that transfers an ongoing call from one channel to another channel within a cell/sector or when user moves from one cell to another cell. Handoff is the key operation in cellular mobile communication system, which is accomplished by the system and is un-perceptible for the user. In this paper, handoff mechanism is analyzed on the basis of received signal strength from the...
The human visual system exhibits reduced sensitivity to distortions in the regions of an image where the rate of change is significant. This entails that a watermark with significant value can be robust and if it resides near around edges and textured areas of an image, it would be imperceptible as well. The present work exploits this characteristic of the human visual system to embed a robust and...
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