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Publications associées (39)

A GSM-GPRS/UMTS FDD-TDD/WLAN 802.11a-b-g multi-standard carrier generation system

A compact carrier generation system enabling proper interoperability among quad-band GSM, WCDMA (FDD and TDD), and WLAN (802.11a/b/g) standards is developed. The implementation is achieved in 0.25-mum BiCMOS-SiGe process. The measured tuning range is highe ...

2006

Unsupervised Spectral Subtraction for Noise-Robust ASR on Unknown Transmission Channels

Hervé Bourlard, Guillaume Lathoud

This paper addresses several issues of classical spectral subtraction methods with respect to the automatic speech recognition task in noisy environments. The main contributions of this paper are twofold. First, a channel normalization method is proposed t ...

IDIAP2006

Composite right/left handed transmission line metamaterial phase shifters (MPS) in MMIC technology

Anja Skrivervik, Julien Perruisseau-Carrier

This paper presents the modeling and design of one-dimensional metamaterial phase shifters (MPSs) in monolithic-microwave integrated-circuit technology based on the composite right/left-handed transmission-line approach. From a theoretical point-of-view, w ...

2006

Multistandard carrier generation system for quad-band GSM/WCDMA (FDD-TDD)/WLAN (802.11 a-b-g) radio

Adil Koukab

A compact carrier generation system enabling proper interoperability among quad-band GSM, WCDMA (FDD and TDD) and WLAN (802.11a/b/g) standard is developed. The implementation is achieved in 0.25μm BiCMOS-SiGe process. The measured tuning range is higher th ...

2006

CMOS imager based on single photon avalanche diodes

Edoardo Charbon, Radivoje Popovic, Pierre-André Besse, Cristiano Niclass, Alexis Rochas

In this paper we report on a 32×32 optical imager based on single photon avalanche diodes integrated in CMOS technology. The maximum measured dynamic range is 120dB and the minimum noise equivalent intensity is 1.3×-3lx. The minimum integration time per pi ...

2005

1100 x 1100 Port MEMS-based optical crossconnect with 4-dB maximum loss

Herbert Shea, Ji Hyun Kim

We present a microelectromechanical systems-based beam steering optical crossconnect switch core with port count exceeding 1100, featuring mean fiber-to-fiber insertion loss of 2.1 Db and maximum insertion loss of 4.0 dB across all possible connections. Th ...

2003

High performance solar blind detectors based on AlGaN grown by MBE and MOCVD

Nicolas Grandjean, Mauro Mosca

Solar blind detectors based on AlGaN grown by Molecular Beam Epitaxy and Metal Organic Vapor Phase Epitaxy have been fabricated and characterized. Metal Semiconductor Metal (MSM) detectors and vertical Schottky detectors have been realized, with a design t ...

Materials Research Society2003

A low-power 1-GHz super-regenerative transceiver with time-shared PLL control

Catherine Dehollain

A low-power transceiver for ISM applications in the 868-MHz band has been integrated in a 0.8-μm BiCMOS technology. The receiver part is based on the super-regenerative principle. The system includes two time-shared control loops, one for the selectivity a ...

2001

Vertical position control on COMPASS-D

Theoretical and experimental work on the vertical position control system on the COMPASS-D tokamak is described. An analog proportional + derivative (P + D) system is currently used, and two important sources of disturbance are observed in the system. One ...

1998

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