公开(公告)号：DE69810293T2

公开(公告)日：2003-11-13

申请号：DE69810293

申请日：1998-10-01

Applicant: ST MICROELECTRONICS NV ,  ST MICROELECTRONICS SA

Inventor： MESTDAGH DENIS J G ,  ISAKSSON MIKAEL R ,  OEKVIST GOERAN S

IPC: H04B3/23 ,  H04J11/00 ,  H04L27/26 ,  H04B3/20

公开(公告)号：DE69810293D1

公开(公告)日：2003-01-30

申请号：DE69810293

申请日：1998-10-01

Applicant: ST MICROELECTRONICS NV ,  ST MICROELECTRONICS SA

Inventor： MESTDAGH DENIS J G ,  ISAKSSON MIKAEL R ,  OEKVIST GOERAN S

IPC: H04B3/23 ,  H04J11/00 ,  H04L27/26 ,  H04B3/20

公开(公告)号：JP2000115032A

公开(公告)日：2000-04-21

申请号：JP28134099

申请日：1999-10-01

Applicant: ST MICROELECTRONICS SA ,  TELIA AB

Inventor： MESTDAGH DENIS J G ,  ISAKSSON MIKAEL R ,  OEKVIST GOERAN S

IPC: H04B3/23 ,  H04J11/00 ,  H04L27/26

Abstract: PROBLEM TO BE SOLVED: To provide a digital subscriber line transmission system having an echo canceller simple in configuration and high in reliability. SOLUTION: This system has an inverse fast Fourier transformation (IFFT) circuit 14 which receives N digital output values as frequency range coefficients, a fast Fourier transformation(FFT) circuit 18 which receives a time area signal and outputs N digital frequency range coefficients as input values, a line interface 16 which couples the IFFT and FFT circuit with a subscriber line 10, and a circuit which inserts cyclic suffixes(CS) at ends of respective symbols while the symbols are part of the time area signal corresponding to the N output values and includes the echo canceler provided so as to subtract the respective output values mutiplied by respective constant magnifications (k) from the respective input values.