Title:
CDMAシステムの等化型並列干渉打消し(EPIC)
Document Type and Number:
Japanese Patent JP3763817
Kind Code:
B2
Abstract:
A new multiuser detection scheme EPIC (Equalized Parallel Interference Cancellation) is disclosed. A rake receiver signal zRake output by a rake receiver is detected, which receives a spread spectrum composite signal r comprising plural user signals b 1 ,b 2 , . . . ,bK that have been spread with spreading codes. At first, first hard-decision values bRake are produced on the basis of the rake receiver outputs. Then, first parallel interference cancellation values are produced on the basis of the first hard-decision values, and second hard-decision values bPIC are produced on the basis of the first parallel interference cancellation values. After that, the first and second hard-decision values are combined for producing first combination values, and second parallel interference cancellation values are on the basis of the first combination values. Finally, third hard-decision values are produced on the basis of the second parallel interference cancellation values and the third hard-decision values are output as first stage equalized parallel interference cancellation values bEPIC(1).
Inventors:
One Haifen
Bouillon
Releveling Yoruma
Bouillon
Releveling Yoruma
Application Number:
JP2002533492A
Publication Date:
April 05, 2006
Filing Date:
October 06, 2000
Export Citation:
Assignee:
NOKIA CORPORATION
International Classes:
H04B1/707
Domestic Patent References:
| JP2002033685A | ||||
| JP2001136084A | ||||
| JP2000013360A | ||||
| JP10190496A | ||||
| JP7508393A |
Foreign References:
| US5644592 | ||||
| WO1999001946A1 |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda