公开(公告)号：AU2003229148A1

公开(公告)日：2003-12-02

申请号：AU2003229148

申请日：2003-05-19

Applicant: ST MICROELECTRONICS NV

Inventor： PISONI FABIO ,  HUG ROLAND ,  BONAVENTURA MARCO

IPC: H04B3/23 ,  H04L25/03 ,  H04L27/26

Abstract: An equalizer for a multi carrier transmission system, converts a transmitted multi carrier signal into sampled frequency domain signals, and suppresses time domain delay dispersion, on the sampled frequency domain signals. It exploits circulant decomposition of a Toeplitz matrix to enable the computationally heavy evaluation of a matrix multiplied by a vector, to be avoided. Increased precision arises from the frequency domain processing being equivalent to a longer time domain FIR filter than is normally practical. The amount of compensation for different carriers can be adjusted, which can lead to increased precision.

公开(公告)号：DE69723563D1

公开(公告)日：2003-08-21

申请号：DE69723563

申请日：1997-09-01

Applicant: ST MICROELECTRONICS NV

Inventor： ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  TONVALL HARRY ,  OLSSON LENNART ,  STEFANSSON TOMAS ,  OEHMAN HANS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  NORDSTROEM TOMAS ,  ISAKSSON LARS-AKE ,  BENGTSSON DANIEL ,  HAKANSSON SIWERT ,  WEN YE

IPC: H04J11/00 ,  H04B3/06 ,  H04L1/00 ,  H04L25/03 ,  H04L27/26

Abstract: A multi-carrier transmission system using orthogonal carriers with high order QAM constellations for the transmission of a plurality of bits per carrier and symbol. The system uses some method for the determination of an inverse channel model to be used in the equalization process. In the frequency domain, this is normally based on an estimate of the channel attenuation and phase for each carrier. A simplified method of equalization is provided which uses data at the symbol carrier input and output to adaptively estimate an inverse channel model.

公开(公告)号：AT245324T

公开(公告)日：2003-08-15

申请号：AT97939280

申请日：1997-09-01

Applicant: ST MICROELECTRONICS NV

Inventor： ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  TONVALL HARRY ,  OLSSON LENNART ,  STEFANSSON TOMAS ,  OEHMAN HANS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  NORDSTROEM TOMAS ,  ISAKSSON LARS-AKE ,  BENGTSSON DANIEL ,  HAKANSSON SIWERT ,  WEN YE

IPC: H04J11/00 ,  H04B3/06 ,  H04L1/00 ,  H04L25/03 ,  H04L27/26

Abstract: A multi-carrier transmission system using orthogonal carriers with high order QAM constellations for the transmission of a plurality of bits per carrier and symbol. The system uses some method for the determination of an inverse channel model to be used in the equalization process. In the frequency domain, this is normally based on an estimate of the channel attenuation and phase for each carrier. A simplified method of equalization is provided which uses data at the symbol carrier input and output to adaptively estimate an inverse channel model.

公开(公告)号：AU2002357965A1

公开(公告)日：2003-07-09

申请号：AU2002357965

申请日：2002-12-04

Applicant: ST MICROELECTRONICS NV

Inventor： LULE TAREK

IPC: H01L20060101 ,  H01L21/8238 ,  H01L27/146 ,  H01L31/18

Abstract: The invention relates to a method for producing image sensors on the basis of TFA technology including of an amorphous thin-layer system that has been applied on a crystalline ASIC. The inventive method enables the production of image sensors on the basis of TFA technology, which improve the picture quality at low luminous intensity by reducing the dark currents. The photodiodes in the thin-layer material that are configured as pixels are linked with transistor structures in the crystalline ASIC via back electrodes. The transistor structures have particularly low leakage currents due to implantation technology or optimization of the production process.

公开(公告)号：DE69722415D1

公开(公告)日：2003-07-03

申请号：DE69722415

申请日：1997-09-01

Applicant: ST MICROELECTRONICS NV

Inventor： ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  TONVALL HARRY ,  OLSSON LENNART ,  STEFANSSON TOMAS ,  OEHMAN HANS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  NORDSTROEM TOMAS ,  ISAKSSON LARS-AKE ,  BENGTSSON DANIEL ,  HAKANSSON SIWERT ,  WEN YE

IPC: H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04L27/34 ,  H04M3/00 ,  H04M11/00 ,  H04L5/06

Abstract: In certain types ol transmission system using nQ,1M it may be desirable to use a control applications in muIticarrier snrstems with variable bitloading it is particularly desirible that the control channel data be separable from user data when the value of n. i.e the bitloading. or constellation identifier are unknown. Binary data is transmitted using nQAM modulation. The binary data comprises both user data and cointro,l clata. This means that a control channel is superimposed on a user data channel within the same nQAM constellation. Separation of said control data is lacilitated by arranging control data points to have either unique phase, or unique amplitude, values. These unique values are not employed for user data points.

公开(公告)号：DE69907864D1

公开(公告)日：2003-06-18

申请号：DE69907864

申请日：1999-03-05

Applicant: ST MICROELECTRONICS NV ,  ST MICROELECTRONICS SA

Inventor： ISSON OLIVIER ,  NORDSTROEM TOMAS

IPC: H04L5/14 ,  H04B3/21 ,  H04B3/23 ,  H04J11/00 ,  H04L25/03 ,  H04L27/26 ,  H04M1/76 ,  H04M3/00

公开(公告)号：AT241879T

公开(公告)日：2003-06-15

申请号：AT97937938

申请日：1997-09-01

Applicant: ST MICROELECTRONICS NV

Inventor： ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  TONVALL HARRY ,  OLSSON LENNART ,  STEFANSSON TOMAS ,  OEHMAN HANS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  NORDSTROEM TOMAS ,  ISAKSSON LARS-AKE ,  BENGTSSON DANIEL ,  HAKANSSON SIWERT ,  WEN YE

IPC: H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04L27/34 ,  H04M3/00 ,  H04M11/00 ,  H04L5/06

Abstract: In certain types ol transmission system using nQ,1M it may be desirable to use a control applications in muIticarrier snrstems with variable bitloading it is particularly desirible that the control channel data be separable from user data when the value of n. i.e the bitloading. or constellation identifier are unknown. Binary data is transmitted using nQAM modulation. The binary data comprises both user data and cointro,l clata. This means that a control channel is superimposed on a user data channel within the same nQAM constellation. Separation of said control data is lacilitated by arranging control data points to have either unique phase, or unique amplitude, values. These unique values are not employed for user data points.

公开(公告)号：DE69906548D1

公开(公告)日：2003-05-08

申请号：DE69906548

申请日：1999-12-14

Applicant: ST MICROELECTRONICS NV ,  ST MICROELECTRONICS SA

Inventor： NORDSTROEM TOMAS ,  BENGTSSON DANIEL ,  ISSON OLIVIER

IPC: H04J11/00 ,  H04B3/32

公开(公告)号：DE69720225D1

公开(公告)日：2003-04-30

申请号：DE69720225

申请日：1997-09-01

Applicant: ST MICROELECTRONICS NV

Inventor： ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  TONVALL HARRY ,  OLSSON LENNART ,  STEFANSSON THOMAS ,  OEHMAN HANS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  NORDSTROEM TOMAS ,  ISAKSSON LARS-AKE ,  BENGTSSON DANIEL ,  HAKANSSON SIWERT ,  WEN YE

IPC: H04J11/00 ,  H04B3/10 ,  H04L1/00 ,  H04L7/00 ,  H04L27/26 ,  H04L5/06

Abstract: A multi-carrier transmission system using DMT. It is known to recover a receiver sample and clock from a reserved carrier, a pilot carrier having a fixed phase. A sampling clock oscillator in a receiver is then phase locked to the pilot carrier. Multi-carrier receivers, such as DMT receivers, are normally equipped with an FFT processor. A complex number representing the pilot carrier is then available from the FFT processor output. If an FFT processor is not available, a one frequency DFT processor can be provided to produce a complex estimate of the pilot carrier. In a DMT system, frame synchronization is handled separately from sampling clock synchronization, although the two processes are intimately related and frame synchronization must be acquired before sampling clock synchronization.

公开(公告)号：DE69717128D1

公开(公告)日：2002-12-19

申请号：DE69717128

申请日：1997-09-01

Applicant: ST MICROELECTRONICS NV

Inventor： ISAKSSON MIKAEL ,  JOHANSSON MAGNUS ,  TONVALL HARRY ,  OLSSON LENNART ,  STEFANSSON TOMAS ,  OEHMAN HANS ,  BAHLENBERG GUNNAR ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARIE ,  NORDSTROEM TOMAS ,  ISAKSSON LARS-AKE ,  BENGTSSON DANIEL ,  HAKANSSON SIWERT ,  WEN YE

IPC: H04L27/34 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04M3/00 ,  H04M11/00 ,  H04L5/06

Abstract: A multi-carrier transmission system. A received multi-carrier signal is sampled and digitized before FFT processing. Multi-carrier signals consist of many narrow band carrier waves which convey data via a wide band channel. The amplitude distribution of the sum of all the individual carriers is Gaussian. This means that high amplitudes occur with low probability. At the present time, analog to digital converters have a limited dynamic range. It is therefore normal practice to provide a compromise between cutting and quantization noise. The adverse affects of a course quantization have to be balanced between signal distortions caused by the loss of the low probability high amplitude signals.