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.
This paper presents a low-power chopper stabilized discrete-time 2nd-order feed-forward ΣΔ modulator with a 4-bit asynchronous successive approximation register (SAR) quantizer. The weighted sum of integrated and feed-forward signals is merged with the sampling phase of the SAR quantizer to minimize the distortion sources and associated hardware overhead. The 1st integrator uses a partially switched...
In smart metering systems, when the density of node is high or distance of communication range is large, the adjacent node number becomes large. If routing based on the number of hop from the sink node is used in such a network, the deviation of load will become large and it will shorten the network lifetime, also degrades other network performance. In this paper, we proposed the techniques solving...
With the increasing capabilities of vehicular communications technology, VANETs (Vehicular Ad-Hoc Networks) have witnessed a significant development. Key to the establishment of value-added services and applications is the design and development of routing protocols. This article studies the effects that mobility, road topology and network applications have on the performance evaluation of VANET routing...
Wireless Mesh Networks (WMNs) are currently attracting a lot of attention due to their ability to provide cost-efficient broadband wireless connectivity. In this paper, we evaluate the performance of a WMN by simulations considering packet delivery ratio (PDR), throughput and delay. For simulations, we used ns-3 simulator and Hybrid Wireless Mesh Protocol (HWMP). We evaluate the performance of the...
Providing integrated network functionality in VHF tactical networks has been problematic for many years. Modern MANET routing techniques can swamp the limited bandwidth of ground-based tactical networks while legacy techniques are inefficient. In this paper, we expand on our previous work using a cross-layered approach and propose a new technique for Multicast Enhanced Opportunistic Routing (MEOR)...
In wireless sensor networks (WSNs), sensors usually form a tree topology and the sensed data are transmitted to a sink using multihop communication fashion. The tree topology works effectively in handling the traffics towards the sink. However, this tree topology aggravates the waste of network resources. In particular, sensors close to the sink will overuse the energy for transmitting other sensed...
Due to the US Government's cancellation of the Transformational Satellite Communications (TSAT) program, Internet Protocol (IP) networking using Military Satellite Communications (MILSATCOM) is not currently planned. In order to support military IP based communications over MILSATCOM systems; affordable, effective and efficient solutions must be developed. An alternate near-term MILSATCOM networking...
To properly operate closed industrial control networks, it is required that communication with nearly constant delay bounds be supported. In [9] the authors introduced FlexTDMA in order to provide this support, and with minimal delay-jitter in an asynchronous network, under unicast communication. In this paper we consider how periodic on-off traffic and frame loss are managed in the presence of network...
In wireless sensor networks, all data packets are routed from the individual sensor nodes towards an in-situ base-station (BS). Such traffic pattern makes the BS vulnerable to adversary's attack. Basically, an adversary would intercept the ongoing transmissions and localize their sources. Then by employing traffic analysis techniques, an adversary would correlate the intercepted transmissions to uncover...
This paper addresses the NP-hard problem of switching off bundled links whilst retaining the QoS provided to existing applications. We propose a fast heuristic, called Multiple Paths by Shortest Path First (MSPF), and evaluated its performance against two state-of-the-art techniques: GreenTE, and FGH. MSPF improves the energy saving on average by 5% as compared to GreenTE with only 1% CPU time. While...
This paper investigates the consensus problem of multi-agent networks with aperiodic sampled communication and nonuniform time-delays under switching topology. A distributed impulsive algorithm is introduced to achieve consensus, where only position measurements are utilized. It is shown that under certain assumptions upon the sampling intervals, the diagonal elements of Laplace matrix and the control...
We present LVRI, a hybrid link-state routing protocol based on exchange of link states in a region of interest. The region of interest (ROI) is defined as a connected component of the network that includes the source, destination nodes and the nodes that act as relays for the data. An ROI is established on-demand and exists as long as there are data to be sent. Each node in the region of interest...
Named Data Networking is a new concept that takes a fundamentally different approach to what is found in Internet Protocol (IP) network systems. IP-type networks name locations (in the form of IP addresses) to route messages to destinations when sending data. Named Data Networks (NDNs), on the other hand, are primarily concerned about the data itself and not necessarily about the locations where the...
As a routing algorithm defined in IEEE 802.15.5, server routing (SR) can attain the optimal routes between source and destination nodes. However, we found that it has the following two problems: (1) unicasting the Link State Registrations does not utilize the available topology information, and (2) the relay list of Route Formations includes redundant contents. To address these problems, we propose...
Most distributed applications involve some form of event-based interaction, often implemented using a publish-subscribe (pub-sub) infrastructure. To improve scalability, the acts of matching events against subscriptions and delivery them are performed collaboratively by a set of brokers connected into an overlay network. Recent research has proposed several approaches to support the self-adaptation...
In the view of the large scale and increasing kinds of service of space information networks, a service- oriented topology control algorithm is proposed. According to demands of existing service, the topology of network is divided into several logical sub-topologies, on which construct the corresponding topology. Taking the communication pattern as an example, the augmentation-based approach is adopted...
This paper provides a simulation based procedure for evaluating video streaming over Bluetooth v2.1 + Enhanced Data Rate (EDR) and Bluetooth v3 + High Speed (HS) specification. For more realistic simulation of audio video transmission over Bluetooth network two mechanisms have been proposed. These mechanisms can be applied over upcoming Bluetooth specification and in more advanced Bluetooth streaming...
Data dissemination in vehicular ad hoc networks (VANETs) has recently received considerable attention. Due to the unique characteristics of VANET, the implementation of reliable data dissemination among vehicles has encountered many challenges. In this paper, a reliable and efficient data dissemination scheme is presented. Relative locations between neighbor vehicles are predicted to improve delivery...
A MANET (Mobile Ad Hoc Network) can support large as well as small scale network topology. Based upon our specific small scale MANET requirement, we have taken the combination of horizontal and vertical topology with less number of nodes to check how the various MANET protocols like pro-active (DSDV) and re-active (AODV and DSR) performs in this manner. In this research study, we have observed these...
As planar scaling to achieve higher chip integration seems to be on the brink of saturation, three-dimensional (3D) integration has emerged as a promising technology. It is critical to have efficient early stage estimation methodologies to build high performance digital systems as well as to shorten design time. In this paper, a novel methodology is proposed which takes into account key physical effects...
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.