Asynchronous Transfer Mode (ATM) has emerged as the most promising technology in supporting future broadband multimedia communication services. To accelerate the deployment of ATM technology, the ATM Forum, which is a consortium of service providers and equipment vendors in the communication industries, has been created to develop implementation and speci cation agreements. In this article, we ...

Optimal multilevel feedback control policies for rate based flow control in available bit rate (ABR) service in asynchronous transfer mode (ATM) networks are obtained in the presence of information and propagation delays, using a numerically efficient two timescale simultaneous perturbation stochastic approximation (SPSA) algorithm. Convergence analysis of the algorithm is presented. Numerical ...

At a buffered switch in an ATM (asynchronous transfer mode) network it is important to know what combinations of different types of traffic can be carried simultaneously without risking more than a very small probability of overflowing the buffer. We show that a simple and serviceable measure of effective bandwidths may be computed for stationary traffic sources. For large buffers the effective...

A closed form Bit Error Ratio (BER) formula is derived for a fixed-mode Quadrature Amplitude Modulation (QAM) scheme employing Rake receivers and receiver antenna diversity. The analysis is extended to constant power Adaptive QAM (AQAM) expressing the average BER and the average throughput as a closed form function of the modulation mode switching levels. Then, the switching levels are optimise...

In this paper, we study the effects of synchronous and asynchronous communication mode on electronic negotiations. By applying content analysis, we compare the negotiation processes of two e-negotiation simulations conducted in a synchronous and an asynchronous mode. Our results show significant differences in communication behavior of subjects. Synchronous negotiation mode leads to less friend...

The Broadband Integrated Services Digital Network (B-ISDN) supports transmission of different types of data such text, audio, images, video and combination of these types of data at higher transmission rates. The Asynchronous Transfer Mode (ATM) has been widely accepted as transfer mode for B-ISDN. Traffic management and congestion control are main issues in ATM networks. In this paper, we desc...

This paper presents a low-power FPGA based on mixed synchronous/asynchronous design. The proposed FPGA consists of several sections which consist of logic blocks, and each section can be used as either a synchronous circuit or an asynchronous circuit according to its workload. An asynchronous circuit is power-efficient for a low-workload section since it does not require the clock tree which al...

The asynchronous transfer mode (ATM) is the transfer mode recommended for the broad integrated service digital network (B-ISDN) by ITU-T. In this paper, we propose a self-routing fault-tolerant switching architecture for ATM networks. The proposed architecture uses subswitches and extra links to provide alternative paths; hence, can tolerate multiple faults. Analytical results show that the tot...

This paper investigates the dynamic behavior of Gas Metal Arc Welding (GMAW) process for two types of power supplies –inverter and rectifier- for short circuit transfer mode. The large ripples on the rectifier power source are able to perturb the metal transfer mode. In this experimental work some operating points in the short circuit mode have been selected using an automatic pipeline welding ...

An asynchronous unit delay is an n input n output of the input n-tuple prior to the last inlput change. It asynchronous sequential circuit in which the present value of the will then be shown that every asynchronous definite flow output n-tuple is equal to the value of the input n-tuple prior to the last input change. This paper considers the problem of determining ablecan brizeday a fee bac r ...