Now showing items 1-20 of 47

    • Achieving reliable networking for the generic autonomous platform for sensor systems (GAP4S) 

      Monti, Paolo, 1973- (The University of Texas at Dallas, 2013-06-18)
      Networks of wireless integrated sensors are often used to monitor parameters distributed in the environment. These parameters are related to a variety of applications such as security, patient monitoring, chemical and ...
    • Ad Hoc 802.11b cooperative protocols: performance in a slow fading channel 

      Agarwal, Niraj, 1977-; ChanneGowda, Divya, 1981-; Kannan, Lakshmi Narasimhan, 1984-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-05-24)
      This paper investigates the use of cooperative communications in the context of ad hoc IEEE 802.11b to combat radio signal degradations due to slow fading. The performance gain of both an existing cooperative protocol and ...
    • An analytical model with improved accuracy of IEEE 802.11 protocol under unsaturated conditions 

      Vijayasankar, Kumaran, 1984-; Taufique, Azar; Kannan, Lakshmi Narasimhan, 1984-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-05-23)
      In this work the authors present an analytical model that - compared to previously published work- more accurately captures the delay of IEEE 802.11 protocol under low, medium, and near-saturation load conditions. A Markov ...
    • An automatic repeat request protocol for cooperative slotted radio networks 

      Cerutti, Isabella, 1973-; Fumagalli, Andrea; Gupta, Puja, 1980- (The University of Texas at Dallas, 2013-06-18)
      In conventional (non-cooperative) radio networks, the data frames, that are corrupted by errors during the transmission in a fading environment, are retransmitted by the source. In cooperative radio networks, frame ...
    • Building alternate multitasking trees in MPLS networks 

      Tang, Limin, 1977-; Billenhalli, Shreejith; Vardhan, Hars; Tacca, Marco, 1973-; Fumagalli, Andrea; Monti, Paolo, 1973- (The University of Texas at Dallas, 2013-05-23)
      An algorithm for computing alternate multicast trees in packet transport networks is proposed in this paper. The algorithm efficiently computes multiple sub-optimal tree candidates for a given multicast service request. ...
    • Chromatic dispersion and self-phase modulation in multi-hop multi-rate WDM rings 

      Cerutti, Isabella, 1973-; Fumagalli, Andrea; Potasek, Mary J. (The University of Texas at Dallas, 2013-06-18)
      When compared to first generation and single-hop optical networks, multi-hop and multi­rate (M & M) network architectures have the advantage of significantly reducing network design cost under a variety of wavelength-to-terminal ...
    • Combining cooperative link layer protocols with distributed routing protocols in mobile ad hoc networks – perspectives and performance analysis 

      Vijayasankar, Kumaran, 1984-; Kannan, Lakshmi Narasimhan, 1984-; Ilango, Sathya; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      In cooperative link layer protocols the use of relay nodes may increase the capacity of the radio links. The study in this paper investigates what (if any) performance gain may be passed onto the routing protocol of a ...
    • Cooperative and non-cooperative ARQ protocols for microwave recharged sensor nodes 

      Tacca, Marco, 1973-; Monti, Paolo, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      The Generic Autonomous Platform for Sensor Systems, or GAP4S, is a maintenance-free wireless sensor network in which the sensor battery needs not be replaced. Power is delivered to the sensor via a microwave signal that ...
    • Cooperative ARQ protocols in slotted radio networks 

      Cerutti, Isabella, 1973-; Fumagalli, Andrea; Gupta, Puja, 1980- (The University of Texas at Dallas, 2013-06-18)
      In conventional (non-cooperative) automatic repeat request (ARQ) protocols for radio networks, the corrupted data frames that cannot be correctly decoded at the destination are retransmitted by the source. In cooperative ...
    • Cooperative communications in multihop networking: a case study based on the IEEE 802.11 protocol 

      Kannan, Lakshmi Narasimhan, 1984-; Vijayasankar, Kumaran, 1984-; ChanneGowda, Divya, 1981-; Agarwal, Niraj, 1977-; Fumagalli, Andrea; Tacca, Marco, 1973- (The University of Texas at Dallas, 2013-05-24)
      This paper combines multi-hop networking with single-hop cooperative communications. The solution is built upon the standard IEEE 802.11 protocol operating in the ad hoc mode. A simulation based comparison is carried out ...
    • A cross layer routing metric with wireless cooperative protocols 

      Vijayasankar, Kumaran, 1984-; Kannan, Lakshmi Narasimhan, 1984-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      Cooperative link layer protocols are typically used in single hop networks. In such protocols, a special node called the relay node helps deliver frames from a source to a destination. The performance benefits of cooperation ...
    • Destination-initiated wavelength-weighted reservation protocol in WDM rings 

      Pitchumani, Sudhakar, 1978-; Cerutti, Isabella, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-03)
      In networks that require dynamic assignment of wavelengths, it is known that destination initiated reservation protocols lower the blocking robability - caused by unavailable wavelengths or convergence problems of the ...
    • Digital subcarrier cross-connects (DSXCs) 

      Hui, Rongqing; Huang, Wanjun, 1978; Razo, Miguel; Tacca, Marco, 1973; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      Traditional (analog) Frequency Division Multiplexing (FDM) was widely used in the pre-SONET/SDH era, to multiplex transport channels together using spectral diversity. These transport solutions were then gradually abandoned ...
    • Digital subcarrier optical networks (DSONs) 

      Huang, Wanjun, 1978-; Razo, Miguel; Tacca, Marco, 1973-; Fumagalli, Andrea; Hui, Rongqing (The University of Texas at Dallas, 2013-06-18)
      Energy efficient networks are increasingly becoming a desirable feature in today’s market. Both the number of users and the average amount of data traffic generated by each user continue to grow, requiring more powerful ...
    • Distributed Admission Control for IEEE 802.11 Ad Hoc Networks 

      Zhu, Hua, 1975-; Li, Ming, 1974-; Chlamtac, Imrich; Prabhakaran, B. (The University of Texas at Dallas, 2013-04-16)
      IEEE 802.11 has very poor performance in terms of throughput and transmission delay when the traffic load reaches the saturation condition. Admission control must be provided in order to guarantee the service of existing ...
    • Distributed and mobility-adaptive clustering for ad hoc networks 

      Basagni, Stefano, 1965- (The University of Texas at Dallas, 2013-04-18)
      A distributed algorithm is presented that partitions the nodes of a fully mobile network (ad hoc network) into clusters, thus giving the network a hierarchical organization. The algorithm is proven to be adaptive to changes ...
    • End-to-end QoS guarantee in heterogeneous wired-cum-wireless networks 

      Li, Ming, 1974-; Zhu, Hua, 1975-; Sathyamurthy, Sathish, 1979-; Prabhakaran, B.; Chlamtac, Imrich (The University of Texas at Dallas, 2013-04-16)
      With information access becoming more and more ubiquitous, there is a need for providing QoS support for communication that spans wired and wireless networks. For the wired side, RSVP/SBM has been widely accepted as a flow ...
    • Finding a simple path with multiple must-include nodes 

      Vardhan, Hars; Billenahalli, Shreejith, 1982-; Huang, Wanjun, 1978-; Razo, Miguel; Sivasankaran, Arularasi; Tang, Limin, 1977-; Monti, Paolo, 1973-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-05-23)
      This document presents an algorithm to find a simple path in the given network with multiple must-include nodes. The problem of finding a simple path with only one must-include node can be solved in polynomial time using ...
    • High-speed self-configuring networks based on cost-effective plug-and-play optical (PPO) nodes 

      Fumagalli, Andrae; Hui, Rongqing; Maloberti, F. (Franco); Gregori, Stefano; Cerutti, Isabella, 1973-; Tacca, Marco, 1973- (The University of Texas at Dallas, 2013-06-18)
      This proposal visualizes a future ad-hoc multi-gigabit network infrastructure connecting a very large number of inexpensive optical nodes. Such nodes will look like today’s Fast Ethernet switches, providing however, 2-3 ...
    • A link state advertisement (LSA) protocol for optical transparency islands 

      Das, Shovan, 1979-; Tabrizi, Reza Roshani, 1976-; Monti, Paolo, 1973-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      Plug and play optical (PPO) nodes can be used to ease the deployment of optical networks. Once plugged, PPO nodes provide all-optical circuits between client nodes to alleviate the electronic processing bottleneck of high ...