Title:
A MULTIPATH TRACKING DEVICE AND METHOD IN A CDMA COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2008/148277
Kind Code:
A1
Abstract:
A multipath tracking device and method in a CDMA communication system adds a middle
path power estimation unit, a normalization processing unit and a nonlinear
mapping unit in an existing multipath tracking device. A precise current middle
path signal power is acquired by the middle path power estimation unit, the normalization
processing is performed for the power errors of the late, early path signals in
the normalization processing unit,and thus the impact of the middle path signal
power on the power error is eliminated,the active normalization for the power
error is realized;after obtaining the smooth and stable normalized power error
signal,the precise delay error signal is determined in the nonlinear mapping
unit according to the nonlinear mapping relation between the normalized power
error signal and the delay error signal, thereby the precise voltage control
signal is acquired.
Inventors:
LI CHAO (CN)
XU CHAOLUN (CN)
GAO KANGQIANG (CN)
XU CHAOLUN (CN)
GAO KANGQIANG (CN)
Application Number:
PCT/CN2007/070316
Publication Date:
December 11, 2008
Filing Date:
July 18, 2007
Export Citation:
Assignee:
MASSHALL LTD (GB)
LI CHAO (CN)
XU CHAOLUN (CN)
GAO KANGQIANG (CN)
LI CHAO (CN)
XU CHAOLUN (CN)
GAO KANGQIANG (CN)
International Classes:
H04B1/707; H04J13/00
Foreign References:
| CN1322073A | 2001-11-14 | |||
| CN1561582A | 2005-01-05 | |||
| CN1503492A | 2004-06-09 | |||
| US6690713B1 | 2004-02-10 |
Other References:
See also references of EP 2161845A4
None
None
Attorney, Agent or Firm:
BEIJING HUIZE INTELLECTUAL PROPERTY LAW LLC (A18 Horizon International Tower, No.6, Zhichun Road, Haidian District, Beijing 8, CN)
Download PDF: