Patent · US Active

Interpolation of filter coefficients

US8750364B2 · kind B2 · utility

1Cited by

7References

11Claims

0Family size

Assignee

ST-ERICSSON SA · CH

Inventors

Jens Rosendahl · Hamm, DE
Ville Ruuska · Kaarina, FI
Mika Salmi · Turku, FI

Key dates

Filing date	Dec 21, 2012
Grant date	Jun 10, 2014
Priority date	—
Expiry date	Dec 21, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH03H17/0294
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The frequency response of a digital filter, such as a pre-emphasis filter in a signal transmitter having a phase-locked loop, is adjusted using interpolation of the filter coefficients, enabling sets of filter coefficients to be pre-computed or generated as needed in the transmitter. The phase error behavior of the digital filter can be significantly improved.

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