In this paper, we present an analytical approach to study the power estimate of the interference in a MC-CDMA transmission scheme. The receiver is implementing a simple RAKE architecture that is not near-far resistant. The Regenerated Signal (RS) technique is applied on a symbol basis for power estimation of the jamming signal. An exact equation of this estimate is obtained for L uncorrelated d...

We develop an analytical method for optimizing phase sensitive amplifiers for regeneration in multilevel phase encoded transmission systems. The model accurately predicts the optimum transfer function characteristics and identifies operating tolerances for different signal constellations and transmission scenarios. The results demonstrate the scalability of the scheme and show the significance ...

In this study, using one-minute definitive data published by a number of INTERMAGNET observatories, we apply a number of timeand frequency-domain techniques to characterise the global, natural geomagnetic signal and isolate the artificial noise at an individual observatory. With the aim of developing an analytical tool that can be used to identify observatory noise against the natural signal, w...

Marine industry requires continued development of new technologies in order to produce oil. An essential requirement in design is to be able to compare experimental data from prototype structures with predicted information from a corresponding analytical finite element model. In this study, structural model updating may be defined as the fit of an existing analytical model in the light of measu...

We present a direct approach to obtain scattering parameters (S-parameters) and other derived figures of merit of SiGe-HBTs by means of small-signal (ac) analysis. Therefore, an additional simulation mode has been implemented in the three-dimensional device simulator MINIMOS-NT. Several additional features are provided for efficiently obtaining various small-signal parameters. The accuracy of t...

Certain issues in the analysis of the effects of noise and interference in instantaneously companding signal processors is discussed. Important differences from the analysis and effects encountered in conventional signal processors are pointed out, and are illustrated by deriving analytical results for deterministic small interference and stationary random noise in a first-order instantaneously...

We demonstrate an analytical model for the description of the signal amplification by reversible exchange (SABRE) process. The model relies on a combined analysis of chemical kinetics and the evolution of the nuclear spin system during the hyperpolarization process. The presented model for the first time provides rationale for deciding which system parameters (i.e. J-couplings, relaxation rates...

arrays, researchers have made efforts to address the various bottlenecks and limitations associated with LC–MS analytical methods. Mobile-phase gradient programming, on-line sample handling, fast separation technique development, and multispray interfaces have enabled the characterization of many samples in a relatively short period of time (5–8,15). In addition, the application of computer con...

Chaotic systems and chaotic signal synchronization have attracted a lot of attention lately. Most work on chaotic systems is based on few well-known 3rd-order models derived using analytical techniques. In addition, chaotic signal synchronization or the inability to achieve the same is proven using analytical concepts such as Lyapunov constants etc. that could be understood only by those mathem...

The source of signal variations that governs the analytical performance of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was investigated in this study. In order to specify the source of signal variations of LA-ICP-MS, laser-induced plasma (LIP) Fe emission, LA-ICP-MS Fe+ and LA-ICP-MS Ni+ signals were used as internal standards for the determination of trace elements ...