Patent · US Active

Technique for determining a frequency offset

US8259875B2 · kind B2 · utility

3Cited by

2References

15Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Dietmar Lipka · Starnberg, DE
Stefan Mueller-Weinfurtner · Koblenzer Straße, DE
Udo Wachsmann · Schwabach, DE

Key dates

Filing date	Jul 16, 2010
Grant date	Sep 4, 2012
Priority date	—
Expiry date	Dec 14, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/2675
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A technique for determining a frequency offset between components of a communication network based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is described. A method implementation of this technique comprises a provision of a set of correlation signals at different frequencies, with each correlation signal being indicative of a specific frequency offset hypothesis and comprising the CAZAC sequence. Once a synchronization signal comprising the CAZAC sequence is received, this synchronization signal is correlated with each of the correlation signals to obtain a correlation result for each frequency offset hypothesis. In a next step, at least one of the frequency offset hypotheses is selected based on a comparison of the correlation results. The frequency offset may then be determined based on the at least one selected frequency offset hypothesis.

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