Invention Application
US20020106007A1 Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system
有权
用于码分多址(CDMA)系统的高效多径心形跟踪电路
- Patent Title: Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system
- Patent Title (中): 用于码分多址(CDMA)系统的高效多径心形跟踪电路
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Application No.: US10071899Application Date: 2002-02-08
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Publication No.: US20020106007A1Publication Date: 2002-08-08
- Inventor: Gary Lomp , Fatih Ozluturk
- Applicant: InterDigital Technology Corporation
- Applicant Address: DE Wilmington
- Assignee: InterDigital Technology Corporation
- Current Assignee: InterDigital Technology Corporation
- Current Assignee Address: DE Wilmington
- Main IPC: H04K001/00
- IPC: H04K001/00

Abstract:
A device tracks multipath components of a spread-spectrum signal. The spread-spectrum signal has an associated chip code sequence. The device receives multipath components of the spread-spectrum signal. A first and second plurality of multipath components are despread about a center code phase. The first plurality is a sequence of multipath components prior to the center code phase and the second plurality is a sequence of multipath components after the center code phase. A first and second combined energy is determined from the first and second plurality of multipath components. A tracking delay is calculated based on a difference between the first and the second combined energies. The center code phase is adjusted by said tracking delay.
Public/Granted literature
- US06744809B2 Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system Public/Granted day:2004-06-01
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