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We provide new analytical results concerning the spread of information or influence under the linear threshold social network model introduced by Kempe et al. in, in the information dissemination context. The seeder starts by providing the message to a set of initial nodes and is interested in maximizing the number of nodes that will receive the message ultimately. A node's decision to forward the...
This paper presents the development of single phase AC/DC/AC converter using three-leg inverter. A uniform fixed switching frequency method of current control for both AC/DC and DC/AC converter stages has been proposed. A multiple control loop is used to control the input AC current and DC link voltages of the AC/DC converter and a cascaded H-bridge multilevel inverter (CHBMLI) is used to obtain the...
This tutorial describes the design flows, that is, the design steps and software tools required for designing modern systems-on-chip, focusing on the front end part. A simple flow starting with abstract design description in an HDL and going through transformations leading to physical design, is no longer adequate for the complex systems of today. A high end MPSoC (multiprocessor system on chip) today...
We provide a simple and accurate analytical model for multi-cell IEEE 802.11 WLANs. Our model applies if the cell radius, R, is much smaller than the carrier sensing range, Rcs. We argue that, the condition Rcs >> R is likely to hold in a dense deployment of access points (APs). We develop a scalable cell level model for such WLANs with saturated nodes as well as for TCP-controlled long file...
Advances in micro electro mechanical have triggered an enormous interest in wireless sensor networks. The difficulty of accurate location of sensor nodes has long been considered as very difficult to solve, when taking into account the realities of real world applications. In this paper localized problem is considered with the aim to improve accuracy in location estimation. It describes a distributed...
In macrocell based SoC design, a routing plan to decongest top channel is an important step during floor planning. While previous approaches attempt at reducing congestion of chip as a whole, there is no attempt to specifically decongest top channel. We present an algorithmic approach to decongest top channel by using very few feedthroughs. Results show that compared to conventional methods, we can...
The poor performance of TCP over multi-hop wireless networks is well known. In this paper we explore to what extent network coding can help to improve the throughput performance of TCP controlled bulk transfers over a chain topology multi-hop wireless network. The nodes use a CSMA/CA mechanism, such as IEEE 802.11psilas DCF, to perform distributed packet scheduling. The reverse flowing TCP ACKs are...
This paper proposes a new heterogeneous multi-hop cellular IP (MCIP) network that integrates multi-hop communication with cellular IP. MCIP increases the coverage of the wireless network and improves the network robustness against adverse propagation phenomena by supporting communication in dead zones and areas with poor radio coverage. MCIP includes three components: location management, connection...
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