Title:
【発明の名称】CDMAデジタル移動通信システムにおけるセル初期探索方法
Document Type and Number:
Japanese Patent JP2003529302
Kind Code:
A
Abstract:
The invention relates to a cell initial search method for user equipment (UE) in a CDMA digital cellular mobile communication system. The method includes: a UE after selecting a working frequency point, obtains downlink synchronization with the base station; and corrects carrier deviation between the UE and the base station. The downlink synchronization includes: deciding a range of downlink training sequence timeslot (DwPTS) based on training sequence power characteristic window value method; solving correlation of received data and training sequence in the range to obtain accurate receiving position of a UE. The correction of carrier deviation between a UE and the base station includes: estimating carrier deviation between a UE and the base station by software, recovering carrier frequency difference by using decision and feedback method to adjust hardware and carrier deviation correction method based on joint detection to correct carrier deviation.
Inventors:
Li Feng
Xu iron casting
What kind of
Akatsuki Dragon
Xu iron casting
What kind of
Akatsuki Dragon
Application Number:
JP2001571693A
Publication Date:
September 30, 2003
Filing Date:
January 12, 2001
Export Citation:
Assignee:
China Academy of Telecommunications Technology
International Classes:
H04B1/707; H04B1/7083; H04B1/7087; H04B7/005; H04W24/02; H04W52/32; H04W56/00; H04W76/02; H04W52/50; (IPC1-7): H04Q7/38; H04B1/707
Domestic Patent References:
| JPH11163831A | 1999-06-18 | |||
| JP2002511218A | 2002-04-09 | |||
| JPH11112472A | 1999-04-23 |
Attorney, Agent or Firm:
Atsushi Nakajima (2 outside)