We prove the existence of an oblivious routing scheme that is -competitive in terms , thus resolving a well-known question routing. Concretely, consider undirected network and set packets each with its own source destination. The objective to choose path for packet, from destination, so as minimize defined follows: dilation maximum hop length, congestion number paths include any single edge. ob...

Network delay; Mobile ad hoc network; Trapezoidal fuzzy numbers; Path length Abstract Several parameters like routing protocol, mobility pattern, average speed of mobile nodes, path length from source to destination, previous delay, etc., affect the end-to-end packet delay in mobile ad hoc network. But the nature of relationship between end-to-end delay and those parameters is still unclear. In...

Underwater network simulation and performance analysis require accurate packet error models. The packet error probability depends on the packet length and the temporal distribution of bit errors. We analyze error traces from the SPACE’08 experiment and show that clustering of errors occurs at several time-scales. We propose a two-part statistical error model consisting of a generalized Pareto f...

Energy level performances of three packet delivery schemes in Wireless Sensor Networks (WSN) are evaluated in presence of Rayleigh fading. Three different information delivery mechanisms are investigated using regenerative relays with or without error correction capability. Energy consumption for successful delivery of a data packet for each mechanism is evaluated and compared under several con...

in this study, a robust controller is designed for fuzzy network control systems (ncss) using the static output feedback. delay and data packet dropout affect on the stability of network control systems, and therefore, the asymptotic stability condition is established considering delay and data packet dropout. delay is time-varying while the lower and upper bounds for delay is defined, and the ...

In a superlattice containing a finite number of periods, the allowed values of the Bloch wave number form a discrete set, and the dynamics of an electron through k-space under the influence of an external force is necessarily that of a superposition wave packet composed of multiple Bloch waves. The present paper investigates this dynamics for a particularly simple class of “kcompact” wave packe...

This paper presents an exact probability process analysis for high-speed and realizing fully distributed wireless LANs with non-persistent carrier sense multiple access with collision avoidance (CSMA/CA). The collision avoidance portion of CSMA/CA in this model is performed with a random pulse transmission procedure, in which a user with a packet ready to transmit initially sends some pulse sig...

A collisionless wavelength division multiple access protocol is introduced for a passive star-coupled photonic network that possesses signi cant performance and exibility advantages over alternative approaches. A detailed simulation analysis is developed to study the behavior of the protocol with varying system characteristics. The protocol is control channel based: one of the WDM channels is u...

One of the key issues in providing tight bandwidthand delay guarantees with high speed systems is the cost of packetscheduling. Through timestamp rounding and flow groupingseveral schedulers have been designed that provide near-optimalbandwidth distribution with O(1) time complexity. However, inone of the two lowest complexity proposals in the literature, thecost of each...

In this paper, we study a discrete-time buffer system with a timecorrelated packet arrival process and one unreliable output line. In particular, packets arrive to the buffer in the form of variable-length packet trains at a fixed rate of exactly one packet per slot. The packet trains are assumed to have a geometric length, such that each packet has a fixed probability of being the last of its ...