Title:
TRANSMITTING APPARATUS AND GAIN COMPENSATING METHOD
Document Type and Number:
WIPO Patent Application WO/2001/069827
Kind Code:
A1
Abstract:
A code multiplexer unit (102) multiplexes spread data outputted by spreader units (101-1 to 101-n) to generate code multiplexed data. A reference data generator unit (103) generates redundant data carrying no information and having a constant transmission power. A data adder unit (105) adds the redundant data to the code multiplexed data. A variable amplifier unit (108) variably amplifies the transmission power of the code multiplexed data and redundant data to generate transmission output data. A differential value calculating unit (112) calculates the differential value between a target amplitude value based on the redundant data and the redundant data portion of the transmission output data. A gain control unit (113) generates a gain control signal based on the differential value to control the gain of the variable amplifier unit (108). In this way, the gain compensation can accurately be performed with a small amount of operation.
Inventors:
CHINDA YUSUKE (JP)
HIRAMATSU KATSUHIKO (JP)
HIRAMATSU KATSUHIKO (JP)
Application Number:
PCT/JP2001/001805
Publication Date:
September 20, 2001
Filing Date:
March 08, 2001
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
CHINDA YUSUKE (JP)
HIRAMATSU KATSUHIKO (JP)
CHINDA YUSUKE (JP)
HIRAMATSU KATSUHIKO (JP)
International Classes:
H03G3/00; H04B1/707; H04B7/005; H04J13/00; (IPC1-7): H04J13/04
Foreign References:
| JPH0715262A | 1995-01-17 | |||
| JPH03154430A | 1991-07-02 | |||
| JPH1127233A | 1999-01-29 | |||
| JPH08116343A | 1996-05-07 | |||
| JPH11308126A | 1999-11-05 |
Other References:
KAZUYUKI MIYA ET AL.: "CDMA/TDD densou ni okeru kichikyoku soujushin diversity houshiki no teian", DENSHI JOHO TSUSHIN GAKKAI GIJUTSU KENKYU HOKOKU RCS94-73, 17 September 1994 (1994-09-17), pages 25 - 30, XP002947600
See also references of EP 1182814A4
See also references of EP 1182814A4
Attorney, Agent or Firm:
Washida, Kimihito (Shintoshicenter Bldg. 24-1 Tsurumaki 1-chome Tama-shi, Tokyo, JP)
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