Lisa Anneberg

Terminal reliability using binary decision diagrams

Terminal reliability has been a topic of research for the last three decades. Several techniques for determining terminal reliability are available in literature. Binary decision diagrams have attracted the attention of several digital logic research workers. The objective of this paper is to illustrate how binary decision diagrams can be exploited for determining terminal reliability of networks.

Boolean neural network realization of an adder-subtractor cell

A great deal of interest has emerged recently in the field of Boolean neural networks. Boolean neural networks require far less training than the conventional neural networks and have a variety of applications. They are also strong candidates for VLSI design. In this paper, a technique for learning representation of an adder-subtractor cell has been proposed. The technique can be exploited for the VLSI design of an arithmetic unit for a pipelined digital computer.

Buffer management simulation in ATM networks

Abstract Computer networking communications are now in the era of dedicated, high-speed switched networks. Asynchronous Transfer Mode (ATM) networks are increasing in importance because ATM technology has the ability to deliver a high quality of service, while simultaneously supporting multiple classes of traffic on the same transmission pathway. Traffic management is increasingly becoming an important focus of study in ATM networks. In this context, congestion control through adequate buffering is becoming particularly significant to minimize the probability of cell loss and cell delay when multiple large traffic bursts are received concurrently at a switch [1,2]. This paper presents a simulation of a new dynamic buffer allocation management scheme in ATM networks. To achieve this objective, an algorithm that detects congestion and updates the dynamic buffer allocation scheme was developed for the OPNET simulation package via the creation of a new ATM module. This dynamic buffer allocation scheme utilizes four identified attributes: in-use bandwidth, in-use bandwidth of distinct Quality of Service (QoS) of an incoming traffic, available number of buffers on the corresponding logical queue, and the latest short-term cell arrival rate destined to the corresponding output port. The behavior of the network under bursty traffic conditions was examined.

Reliability enhancement by the reversal of token for a basic token ring in the case of a single component failure

Abstract The inherent functional property of the unidirectional token movement in a token ring network, is modified in this paper and an algorithm is presented that enables the continuity of operation, in case of a single link component failure, thereby improving the system reliability of a basic conventional token ring network. This phase contributes to the continuity in operation until the maintenance restores the normal ring configuration.