In this paper, we describe the Adaptive Multi-Rate (AMR) speech coder currently under standardization for GSM systems as part of the AMR speech service. The coder is a multi-rate ACELP coder with 8 modes operating at bit-rates from 12.2 kbit/s down to 4.75 kbitls. The coder modes are integrated in a common structure where the bit-rate scalability is realized mainly by altering the quantization ...

Taking into account the multi-party communications in an organization requires a specific support and a modeling that integrates these two dimensions. This paper proposes to extend the normative organisation modelMOISE in order to specify the interaction modes between autonomous agents participating to an organisation. This specification has two purposes : (i) to make the multi-agent organisati...

Hadronic decays rates of the lepton into multi meson nal states are presented. The structure of the hadronic matrix elements for various decay modes is discussed. The formalism of structure functions allows for a detailed test of these matrix elements. Various correlations are discussed which are sensitive to possible CP violation and new physics eeects in the decay modes.

For both discrete-time and continuous-time linear multi-variable control systems, we introduce a concept of control Lyapunov modes associated with a control Lyapunov function in a quadratic form. We prove that the number of unstable control Lyapunov modes is at most equal to the number of input of the system.

We present a workbench for the study of real-time quantum imaging by measuring the frame-by-frame quantum noise reduction of multi-spatial-mode twin beams generated by four wave mixing in Rb vapor. Exploiting the multiple spatial modes of this squeezed light source, we utilize spatial light modulators to selectively pass macropixels of quantum correlated modes from each of the twin beams to a h...

Relative intensity noise spectra of weakly index guided VCSELs in a multi{transverse mode regime are analyzed by using a model that takes into account all the transverse modes supported by the waveguide. Several resonance peaks are obtained in the noise spectra that correspond to the relaxation oscillation frequencies of the transverse modes. In is shown that for low spatially overlapping trans...

A conceptual design study for a future multi-turn ERL based light source at HZB is completed and presently under internal review. The Femto-Science-Factory (FSF) is a candidate for a 4 generation diffraction limited synchrotron light source. It will provide its users with ultra-bright photons of angstrom wavelength at 6GeV. The FSF is intended to be a multi-user facility and offer a wide variet...

In the present study, an experimental investigation was performed to characterize the vortex induced vibration (VIV) of a flexible cable in an oncoming shear flow. The VIV tests were conducted in a wind tunnel with a flexible cable model. It was found that, under different oncoming velocity profiles, the cable model behaved in single-mode and multi-mode VIVs. The displacement amplitudes of the ...

Mode-division multiplexing (MDM) can increase the capacity of direct-detection short-reach systems in proportion to the number of modes employed. MDM requires compensation of modal crosstalk at a transmitter or receiver by the multi-input multi-output (MIMO) signal processing. We show that the channel estimation required for the MIMO processing in a basis of modes can be expressed as a phase re...

In this paper we describe how to realize a Java RMI framework supporting multi-point method invocation. The package we have realized allows programmers to build groups of servers that could provide services in two different modes: fault tolerant and parallel. These modes differ over computations failure. Our extension is based upon the creation of entities which maintain a common state between ...