Patent · US Active

Method and device for determining an unabbreviated channel-impulse response in an OFDM transmission system

US8374262B2 · kind B2 · utility

1Cited by

1References

12Claims

0Family size

Assignee

Rohde & Schwarz GmbH & Co. KG · DE

Inventors

Dirk Galda · Haar, DE
Kurt Schmidt · Grafing, DE
Christoph Balz · Munich, DE

Key dates

Filing date	Feb 15, 2008
Grant date	Feb 12, 2013
Priority date	—
Expiry date	May 30, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/2655
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and a device for determining an unabbreviated channel-impulse response in an OFDM transmission system, of which the duration is greater than the length of the guard interval, estimates the channel-transmission factor at frequency-time positions of a relatively-coarse frequency-time raster, interpolates the channel-transmission factor at frequency-time positions of a relatively-fine frequency-time raster and calculates the unabbreviated channel-impulse response by means of inverse Fourier transform from the estimated or interpolated values of the channel-transmission factor at the frequency-time positions of the relatively-fine frequency-time raster. In this context, estimated values of the channel-transmission factor optimized at the individual frequency-time positions of the relatively-fine frequency-time raster are determined from received symbols and from transmitted symbols estimated by means of decision from the received symbols.

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