Patent · US Expired

Method and communication system device for the generation or processing of OFDM symbols in a transmission system with spread user data

US7738571B2 · kind B2 · utility

21Cited by

4References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Elena Costa · Birkenfeld, DE
Dirk Galda · Haar, DE
Harald Haas · Edinburgh, GB
Hermann Rohling · Wolfenbüttel, DE
Egon Schulz · Birkenfeld, DE

Key dates

Filing date	Sep 16, 2002
Grant date	Jun 15, 2010
Priority date	—
Expiry date	Jul 17, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH04L5/026
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

OFDM symbols are generated using data from one or more users or from one or more data sources represented on a number of sub-carriers. To inhibit multiple-access interference on application of the CDMA principle, the data are transformed in a data-source specific manner and only subsequently allocated to the sub-carriers, independently of the transformation.

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