In this paper an analytical model of the oscillation frequency of a differential CML ring oscillator is proposed. The model helps to choose the bias current value to optimize speed, and it is useful to estimate the oscillation frequency changes associated with the bias current change and to process tolerances. Moreover, it allows to relate the propagation delay of a gate evaluated in a ring osc...

To determine the quality of gate delay tests, Min/Max delay fault simulation must determine the detectable sizes of faults. In conventional Min/Max timing simulation, correlations at the inputs of reconvergent gates are ignored. This paper shows how correlation information can be used when fanouts reconverge to produce more accurate results.

We compare between the binary congestion indication scheme and the explicit rate indication scheme proposed for congestion control of ATM's available bit rate service (ABR). The fairness problems of the binary congestion indication scheme that arise when mixing long and short distance tra c are investigated. Our simulations suggest that the unfairness noticed in this case towards the long dista...

| In an asynchronous direct-sequence code-division multiple access (DS-CDMA) communication system the parameter estimation problem, i.e., estimating the propagation delay, attenuation and phase shift of each users' transmitted signal, may be complicated by the so-called near-far problem. The near-far problem occurs when the amplitudes of the users' received signals are very dissimilar, as the c...

A new six transistors multiple-valued current mode one bit full adder is presented. Simulations results utilizing standard 0.18 μm CMOS technology illustrate a significant improvement in terms of number of transistors, chip area and propagation delay.

The paper presents a modification of the standard partitioning technique to generate abstract state spaces preserving similarity for Timed Automata. Since this relation is weaker than bisimilarity, most of the obtained models (state spaces) are smaller than bisimilar ones, but still preserve the universal fragments of branching time temporal logics. The theoretical results are exemplified for s...

This note studies lumped-delay approximations of distributed-delay (DD) control laws. It is shown that approximation problems reported in some recent studies are caused by a brutal combination of poor approximation accuracy in the highfrequency range (a non-strictly proper approximation of a strictly proper transfer function) and excessive sensitivity of the design method to high-frequency addi...

Automation ProTune, ProTune-PZT/OneNMR probe support Improved and unified support of ProTune and ProTune-PZT is provided. This includes automatically setting the RF phase with a reboot of the console. Other enhancements also include increased sensitivity of tuning data averaging; added phase correction for propagation delay in the probe; enhanced status reporting; better handling of exceptional...

We study connectivity and information dissemination in largescale wireless networks with unreliable links from a percolationbased perspective. We first examine static models, where each link of the network is functional with some probability, independently of all other links. We then examine dynamic models, where each link is active or inactive according to a Markov on-off process. We show that...

In this paper, estimation and tracking of the propagation delays, also known as code acquisition and tracking, in an asynchronous DS-CDMA system are considered. Of special interest is the performance in a near-far environment and the proposed estimator is shown to be near-far resistant. The suggested technique is subspace based and relies on recursively tracking the signal subspace, followed by...