Patent · US Active

Efficient de-spreading

US9094266B2 · kind B2 · utility

1Cited by

1References

28Claims

0Family size

Assignee

Gilat Satellite Networks Ltd. · IL

Inventors

Oded Bialer · Petah Tikva, IL
Uzi Ram · Petah Tikva, IL

Key dates

Filing date	Nov 19, 2013
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Nov 19, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2027/0067
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Satellite communication systems utilize spreading by repetition techniques, including block repetition, to enable operation at low signal to noise conditions. A carrier frequency offset between a transmitter and a receiver results in phase offsets between repetitions. Thus, combining the repetitions requires estimation of the phase offset between the repetitions before coherent de-spreading can be performed. Disclosed herein are methods for estimating a phase offset between successive block repetitions. The methods may utilize more than two repetitions for determining a common phase offset between any two successive repetitions. In some embodiments, these methods may allow summation of repetitions with better coherency and/or with a lower de-spreading loss.

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