Patent · US Active

Variable length FFT system and method

US8275820B2 · kind B2 · utility

11Cited by

4References

29Claims

0Family size

Assignee

MEDIATEK INC. · TW

Inventors

Jhih-siang Jhang · Taipei, TW
Jui-Ming Wei · Taichung, TW
Ming Li · Beijing, CN

Key dates

Filing date	Sep 11, 2007
Grant date	Sep 25, 2012
Priority date	—
Expiry date	Feb 23, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/2651
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A variable length fast Fourier transform (FFT) system and a method for performing the FFT system in a global navigation satellite system (GNSS) signal acquisition and tracking, which includes a memory and a number of processing elements are disclosed. Based on the GNSS signal tracking, the variable length FFT system performs a first FFT operation together with a first data length. Based on the GNSS signal acquisition, the variable length FFT system is divided into several FFT subsystems to simultaneously perform different operations with various data lengths different from the first data length. Thus, the variable length FFT system can enhance the hardware utility and increase throughputs.

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