Global Patent Index - EP 0882268 A2

EP 0882268 A2 19981209 - COMMUNICATION SYSTEM WITH MULTICARRIER TELEPHONY TRANSPORT

Title (en)

COMMUNICATION SYSTEM WITH MULTICARRIER TELEPHONY TRANSPORT

Title (de)

KOMMUNIKATIONSSYSTEM MIT MEHRTRÄGERTELEFONÜBERTRAGBARKEIT

Title (fr)

SYSTEME DE COMMUNICATION AVEC TRANSMISSION TELEPHONIQUE PAR PONTEUSES

Publication

EP 0882268 A2 19981209 (EN)

Application

EP 97903135 A 19970124

Priority

  • US 9701444 W 19970124
  • US 1049796 P 19960124
  • US 1050696 P 19960124
  • US 67300296 A 19960628
  • US 65040896 A 19960520

Abstract (en)

[origin: CA2205986A1] The communication system includes a hybrid fiber/coax distribution network. A head end provides for downstream transmission of telephony and control data in a first frequency bandwidth over the hybrid fiber/coax distribution network and reception of upstream telephony and control data in a second frequency bandwidth over the hybrid fiber/coax distribution network. The head end includes a head end multicarrier modem for modulating downstream telephony information on a plurality of orthogonal carriers in the first frequency bandwidth and demodulating upstream telephony information modulated on a plurality of orthogonal carriers in the second frequency bandwidth. The system includes service units, operatively connected to the hybrid fiber/coax distribution network for upstream transmission of telephony and control data and for receipt of the downstream control data and telephony. Also provided is a method and apparatus for performing a Fast Fourier Transform (FFT).

IPC 1-7

G06F 17/14; H04L 1/00; H04L 1/24; H04L 5/02; H04L 5/14; H04L 12/10; H04L 12/12; H04L 12/26; H04L 12/28; H04L 12/44; H04L 27/26; H04L 27/34

IPC 8 full level

G06F 17/14 (2006.01); H04L 1/00 (2006.01); H04L 1/24 (2006.01); H04L 5/02 (2006.01); H04L 5/14 (2006.01); H04L 12/10 (2006.01); H04L 12/12 (2006.01); H04L 12/26 (2006.01); H04L 12/28 (2006.01); H04L 12/44 (2006.01); H04L 27/26 (2006.01); H04L 27/34 (2006.01); H04M 11/06 (2006.01); H04N 7/10 (2006.01)

Citation (search report)

See references of WO 9727550A2

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

CA 2205986 A1 19970724; CA 2205986 C 20060411; EP 0882268 A2 19981209; IL 196383 A0 20110731; IL 196383 A 20120131

DOCDB simple family (application)

CA 2205986 A 19970124; EP 97903135 A 19970124; IL 19638309 A 20090107