In this paper we describe the implementation of an application specific integrated chip (ASIC) for digital heart rate variability monitoring system. The proposed system extracts the R peaks from the input ECG signals using peak detection algorithm and stores the computed R-R intervals into an efficient SRAM as the internal memory. A histogram sorter sorts the R-R intervals which are then indexe...

The focus of this paper is the performance of ATM/AAL2 as a transport technology for Universal Terrestrial Radio Access Network (UTRAN) in UMTS/IMT-2000 setting. In this work, we propose an analytical model for the transparent multiplexing and transport through UTRAN of several voice channels onto a single AAL2/ATM VC. We investigate the queue building up at the AAL2 multiplexer in order to der...

This paper presents a exible traac model which is capable of describing traac dynamics on a variety of timescales associated with broadband packet networks such as ATM. The model is applied to the study of Non-Deterministic Periodic (NDP) sources as well as Variable Bit Rate (VBR) video sources in which cells are delivered at a sub-frame level referred to as a slice. An eecient numerical techni...

Reversible circuit designing is the area where researchers are focussing more and more for the generation of low loss digital system designs. Researchers are using the concept of Reversible Logic in many areas such as Nanotechnology, low loss computing, optical computing, low power CMOS design etc. Here we have proposed a novel design approach for a 2-bit binary Arithmetic Logic Unit (ALU) usin...

In this paper, we develop a simple analytical technique to determine P (fQ > qg), the tail of the queue length distribution, at an ATM multiplexer. The ATM multiplexer is modeled as a uid queue serving a large number of independent sources. Our method is based on the central limit theorem and the maximum variance approximation, and enables us to avoid the state explosion problem. The approach i...

We describe a wavelength multiplexer design that employs multiple transmission volume Bragg gratings written in the same region of a photosensitive glass having a through channel loss of < 0.5 dB. A two-channel multiplexer for wavelengths of lambda = 1310 and 1550 nm is demonstrated to test our design methods and assumptions. Agreement between simulation and experiment is within 0.2 dB at the p...

— Electrostatically Formed Nanowire (EFN) based transistors have been suggested in the past as gas sensing devices. These transistors are multiple gate transistors in which the source to drain conduction path is determined by the bias applied to the back gate, and two junction gates. If a specific bias is applied to the side gates, the conduction band electrons between them are confined to a we...

This contribution deals with a formula for the capacity an ATM multiplexer must at least have to accomodate the loss probability demands of all connections. So it can be used for connection admission control as well as for network resource management purposes. The formula is based on the buuerless uid ow multiplexer model. It allows for a more exact capacity evaluation than if equivalent bandwi...

In this paper a finite-buffer discrete-time approach is presented in order to analyze the performance of a multiplexer loaded by N multimedia sources. For this purpose the emission process of each multimedia source is defined as the superposition of heterogeneous correlated emission processes, each of which models one monomedia source as a Switched Batch Bernoulli Process (SBBP). In order to mo...