Patent · US Expired

Reduced delay implementation of fourier transform based channelizers and de-channelizers

US6973135B1 · kind B1 · utility

1Cited by

3References

19Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Scott Leyonhjelm · Sundbyberg, SE
Richard Hellberg · Huddinge, SE
Joakim Eriksson · Lund, SE

Key dates

Filing date	Jul 5, 2000
Grant date	Dec 6, 2005
Priority date	—
Expiry date	Sep 22, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH03H17/0266
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In a wireless telecommunications system, data processing delays associated with digital channelization and de-channelization may be reduced through the use of a technique that involves processing data blocks in conjunction with the transformation of the data blocks by a large, Fast Fourier Transform (FFT) algorithm, and makes use of multiple transmission and reception branches. In accordance with this technique, the processing delays associated with the FFT algorithm are minimized, but not to the detriment of other important channelizer/de-channelizer design characteristics, such as power consumption, die area and computational complexity.

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