Title:
ジョイント検出システムにおける長いセルコードの使用方法
Document Type and Number:
Japanese Patent JP4134044
Kind Code:
B2
Abstract:
A method of applying a long cell-code in a joint detection system, wherein, at transmitters, multiples of the spreading code (spreading factor) is taken as the length of the long cell-code to scramble the signal, and at receivers, the method still takes the multiuser detection to process the received signal. The method includes that: for every antenna unit, making channel estimation to obtain a channel estimation result of each antenna unit; generating a first mid-matrix of the received data of each antenna unit that relates to selected length of said long cell-code and the channel estimation result; based on the first mid-matrix, generating a second mid-matrix and its associate matrix, and then based on said generated second mid-matrix and its associate matrix, generating a third mid-matrix; making Cholesky decomposition of said third mid-matrix, wherein the number of decomposition order relates to the length of said long cell-code; making demodulation processing based on said Cholesky decomposition result and said received signals of all antenna units having been matching filtered. The whole computation loads of the method are acceptable.
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Inventors:
Lifeng
Application Number:
JP2004557752A
Publication Date:
August 13, 2008
Filing Date:
November 13, 2003
Export Citation:
Assignee:
Da Tang Mobile Communications Equipment Co., Ltd.
International Classes:
H04B1/707; H04J13/18; H04W76/02; H04W88/08; H04J11/00
Domestic Patent References:
| JP2000188563A | ||||
| JP2003521188A | ||||
| JP2003503891A | ||||
| JP2002530925A | ||||
| JP200157545A | ||||
| JP2001189684A |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Kato Kazunori
Katsuichi Nishimoto