Patent · US Expired

Multi-carrier transmission systems

US6160820A · kind A · utility

17Cited by

2References

17Claims

0Family size

Assignee

TELIA COMPANY AB · SE

Inventors

Mikael Isaksson · Luleå, SE
Magnus Johansson · Luleå, SE
Harry Tonvall · Luleå, SE
Lennart Olsson · Luleå, SE
Tomas Stefansson · Luleå, SE
Hans Ohman · Luleå, SE
Gunnar Bahlenberg · Luleå, SE
Anders Isaksson · Luleå, SE
Goran Okvist · Luleå, SE
Lis-Marie Ljunggren · Luleå, SE
Tomas Nordstrom · Luleå, SE
Lars-Ake Isaksson · Luleå, SE
Daniel Bengtsson · Luleå, SE
Siwert Hakansson · Luleå, SE
Ye Wen · Luleå, SE

Key dates

Filing date	Jun 14, 1999
Grant date	Dec 12, 2000
Priority date	—
Expiry date	Jun 14, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH04L5/0037
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A multi-carrier transmission system, particularly a discrete multi-tone (DMT) system. Data is transmitted between two transceivers using a plurality of carriers. The frequency bandwidth of the system is divided between the plurality of carriers. The transmission system is adapted for operation in a heterogeneous network including a number of subscriber equipments having different channel characteristics and coexisting on the same cable. The length of cable for each subscriber terminal varies in relation to its respective location. The transmission system includes an allocation device for allocating the traffic of subscriber equipments having a shorter length of cable to tones starting from a higher frequency band of the system bandwidth.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.