The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Wireless Mesh Networks (WMNs) are attracting a lot of attention from wireless network researchers. Node placement problems have been investigated for a long time in the optimization field due to numerous applications in location science. In our previous work, we evaluated WMN-SA and WMN-GA systems which are based respectively on Simulated Annealing (SA) and Genetic Algorithms (GAs) to find an optimal...
In this work, we consider the replacement methods in WMN-SA simulation system for 4 different distributions of mesh clients. We want to find the optimal distribution of mesh router nodes in order to provide the best network connectivity and coverage in various distributed clients. We implemented a simulation system based on Simulated Annealing (SA) algorithm, called WMN-SA, to calculate the size of...
One of the key advantages of Wireless Mesh Networks (WMNs) is their importance for providing cost-efficient broadband connectivity. There are issues for achieving the network connectivity and user coverage, which are related with the node placement problem. In this work, we consider the router node placement problem in WMNs for different area shapes and sizes. We want to find the optimal distribution...
In this paper we evaluate the performance of WMN-HC system for node placement in WMNs. For evaluation we considered different number of mesh routers and mesh clients. We considered four different mesh client distributions. The simulation results show that our proposed and implemented WMN-HC system can find the optimal number of mesh routers for covering a given number of mesh clients deployed in a...
Mobile Ad-hoc Networks (MANETs) have an increased interest in applications for covering rural areas due to the possibility of usage of low-cost and high-performance mobile terminals, without having to depend on the network infrastructure. MANET terminals are mobile and routes change dynamically, so routing algorithms are an important issue for operation of MANETs. Optimized Link State Routing (OLSR)...
The Delay/Disruption Tolerant Networking (DTN) aims to provide inter-operable communications with wide range of networks which can have poor performance characteristics. In this paper, we investigate the performance of epidemic routing protocol of Vehicular DTN under urban environment. The simulations for two scenarios are conducted considering obstacles (buildings). We consider 802.11p standard and...
In this paper, we propose and evaluate a new fuzzy-based reliability system for Peer-to-Peer (P2P) Communications in JXTA-Overlay that decides the Peer Reliability (PR). In our system, we considered three input parameters: Local Score (LS), Number of Authentic Files (NAF) and Number of Interactions (NI). We evaluate the proposed system by computer simulations. The simulation results have shown that...
In this paper, we used our proposed and implemented system based on Hill Climbing algorithm, called WMN-HC for mesh router node placement in WMNs. We evaluate and compare the performance of the proposed system for different movement methods. We took into consideration Normal and Uniform distributions of mesh clients. We use as evaluation metrics giant component and number of covered mesh clients....
Wireless Mesh Networks (WMNs) are attracting a lot of attention from wireless network researchers. Node placement problems have been investigated for a long time in the optimization field due to numerous applications in location science. In our previous work, we evaluated WMN-GA system which is based on Genetic Algorithms (GAs) to find an optimal location assignment for mesh routers. In this paper,...
Several solutions have been proposed for improving the Quality of Service (QoS) in wireless cellular networks, such as Call Admission Control (CAC) and handover strategies. However, none of them considers the usage of different interfaces for different conditions. In this work, apart from using only Base Stations (BSs) as an important device of cellular networks, we propose a multi-interface approach...
One of the key advantages of Wireless Mesh Networks (WMNs) is their importance for providing cost-efficient broadband connectivity. There are issues for achieving the network connectivity and user coverage, which are related with the node placement problem. We implemented a simulation system where we consider the router node placement problem in WMNs. We want to find the optimal distribution of router...
Welcome to COOL Chips XVII, an international symposium that provides you with the latest developments on low-power and high-speed chips. This year we are bringing you an exciting program that includes five keynote speeches, three instructive special sessions and one panel discussion in this noble harbor city of Yokohama.
Three-dimensional (3D) stacking integration is offering many product benefits to SoC and memory: performance enhancements, product miniaturization and cost reduction. Besides, image sensors featuring 3D stacking of a specialized image sensor layer on the top of a deep submicron digital CMOS have just come to the market. The objective of this forum is to present applications and details of process...
This session presents recent advancements in the field of image sensors such as: process improvements for back-side-illuminated CMOS sensors, low-power sensors for wireless applications, high-speed image processing for feature extraction and recognition, as well as recent advancements in time-of-flight sensors.
Peer-to-peer (P2P) networks, will be very important for future distributed systems and applications. In such networks, peers are heterogeneous in providing the services and they do not have the same competence of reliability. Therefore, it is necessary to estimate whether a peer is trustworthy or not for file sharing and other services. In this paper, we propose two fuzzy-based trustworthiness system...
We have designed and measured completely self-synchronous 1024-bit RSA crypt-engine, fabricated in 40nm CMOS. We have implemented two modular exponentiation algorithms, the high-to-low(HTL) and Montgomery power ladder(MPL) in order to show the performance of the self-synchronous, gate-level pipelined architectures. Both implementations employ identical data-paths and take 804k transistors, with only...
The recent miniaturization and increased complexity of electrical devices have increased the influence of impurities on device performance, especially the influence of small conductive particles with a size on the order of micrometers. Therefore, the inspection of devices during the manufacturing process has become important. In this study, changes in the resonance properties of a microwave cavity...
We have been working for asynchronous control with fine-grain pipeline circuits, namely, self-synchronous circuits. We have demonstrated self-synchronous FPGA (SS-FPGA) designs with autonomous gate-level power gating to reduce energy consumption at the energy minimum operating point. We have also demonstrated self-synchronous RSA crypt-engine (SS-RSA) to realize high throughput in nominal operating...
One of the key advantages of Wireless Mesh Networks (WMNs) is their importance for providing cost efficient broadband connectivity. There are issues for achieving the network connectivity and user coverage, which are related with the node placement problem. In this work, we consider the router node placement problem in WMNs. We want to find the optimal distribution of router nodes in order to provide...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.