Title:
RADIO BASE STATION DEVICE AND DECODING METHOD AND DEVICE UTILIZING TFCI DECODING CHARACTERISTIC FOR USE IN THE SAME
Document Type and Number:
Japanese Patent JP3742055
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the reception characteristics of a dedicated physical data channel (DPDCH) on the uplink transmitted simultaneously with a dedicated physical control channel (DPCCH) in a radio base station device of a third-generation cellular phone system.
SOLUTION: A TFCI code is extracted from the DPCCH by a symbol data decision part 8, and TFCI decoding is performed by a soft decision TFCI decoding part 11 to obtain correlation values with a Walsh orthogonal vector, and they are successively stored in a correlation value characteristic storage part 10. A compensation value calculation part 9 decides a TFCI decoding characteristic from stored correlation values and calculates a corresponding compensation value. A data compensation part 1 for DPDCH performs compensation processing of data in accordance with the compensation value. The soft decision TFCI decoding part generates corresponding TFCI codes in accordance with decoded TFCI values and compares them with reception TFCI codes and informs the compensation value calculation part of information of a slot position where error has occurred.
Inventors:
Takahiro Naito
Application Number:
JP2002344124A
Publication Date:
February 01, 2006
Filing Date:
November 27, 2002
Export Citation:
Assignee:
Saitama NEC Corporation
International Classes:
H04B1/707; H04B1/7097; H04L1/00; H04L25/06; H04W24/02; H04W28/04; H04W76/02; H04W88/08; H04W28/18; H04W48/16; H04W84/04; (IPC1-7): H04B1/707; H04Q7/38
Domestic Patent References:
| JP2003115783A | ||||
| JP200226735A | ||||
| JP2001245359A | ||||
| JP200013353A | ||||
| JP200332146A |
Other References:
3GPP TS25.212 V5.2.0,3GPP,2002年 9月,pp.1-5,48-53,URL,http://www.3gpp.org/ftp/Specs/archive/25_series/25.212/25212-520.zip
Attorney, Agent or Firm:
Masahiko Desk
Masashi Kudo
Yasuhisa Tanizawa
Masashi Kudo
Yasuhisa Tanizawa