Invention Grant
- Patent Title: Apparatus and method for estimating a frequency shift and a time shift
- Patent Title (中): 用于估计频移和时移的装置和方法
-
Application No.: US12845560Application Date: 2010-07-28
-
Publication No.: US08462616B2Publication Date: 2013-06-11
- Inventor: Ion Suberviola
- Applicant: Ion Suberviola
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- Current Assignee Address: DE Munich
- Agency: Glenn Patent Group
- Agent Michael A. Glenn
- Priority: DE09009939 20090731
- Main IPC: H04J11/00
- IPC: H04J11/00 ; H04L27/26
Abstract:
An apparatus for estimating a frequency shift and a time shift in a CDMA signal based on a CDMA code associated with a CDMA signal, having a modulation removal stage for removing a data modulation from the CDMA signal to obtain a modified CDMA signal. The apparatus further has a frequency domain transformer for transforming the modified CDMA signal to the frequency domain to obtain a modified CDMA spectrum and a frequency shift detector for detecting a group of candidate frequency shifts based on the modified CDMA spectrum. The apparatus further has a processing stage for processing the CDMA signal and a candidate frequency shift to obtain the time shift, when a combination of the CDMA signal, the CDMA code and the candidate frequency shift fulfills an optimization criterion and for selecting the candidate frequency shift as the frequency shift.
Public/Granted literature
- US20110032920A1 Apparatus and Method for Estimating a Frequency Shift and a Time Shift Public/Granted day:2011-02-10
Information query
