Title:
CDMA送信装置およびCDMA受信装置
Document Type and Number:
Japanese Patent JP3583414
Kind Code:
B2
Abstract:
An S/P converting section (101) converts input transmission signals A1, A2, B1, B2, ..., K1, K2 to parallelized data, separated in individual transmission lines. Spreading sections (102, 103) spread the respective data under control of a spread control section (107). Adding sections (104-1, 104-2) multiplex spread data. Transmitting sections (105-1, 105-2) provide radio transmission processing to the multiplexed signals , and transmit the data via antennas (106-1, 106-2) by radio. The spread control section (107) controls the spreading methods in the spreading sections (102, 103) based on channel quality. This makes it possible to improve error rate characteristics of the received signal and as maintain spectrum efficiency when varying data is transmitted from multiple antennas.
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Inventors:
Hiroaki Sudo
Application Number:
JP2002330453A
Publication Date:
November 04, 2004
Filing Date:
November 14, 2002
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04B7/04; H04B7/06; H04B7/08; H04J11/00; H04J99/00; H04J13/00; H04J13/16; H04L1/00; H04L1/18; (IPC1-7): H04J15/00; H04B7/06; H04B7/08; H04J13/04
Domestic Patent References:
| JP2001119328A | ||||
| JP2004135328A | ||||
| JP2001268050A |
Attorney, Agent or Firm:
Koichi Washida