Patent · US Active

Estimation of frequency offset between a base station and mobile terminal

US9609612B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Guoqiang Lu · Latham, US
Oskar Mauritz · Stockholm, SE
Fredrik Huss · Sundbyberg, SE
Henrik Back · Handen, SE

Key dates

Filing date	Apr 20, 2015
Grant date	Mar 28, 2017
Priority date	—
Expiry date	Jun 24, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04J2011/0096
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and apparatus for frequency offset estimation exploits the differences in reference symbol timing for different channels to resolve ambiguities in the frequency offset estimation. Based on the initial frequency offset estimates, a hypothesis table is constructed providing hypothesized frequency offsets for each channel for a plurality of possible offset regions. An error metric for each offset region is calculated based on the difference of the hypothesized frequency offsets. The set of hypothesized frequency offsets that minimize the error metric is selected as the final frequency offset estimates.

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