Title:
RADIO TRANSMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/035637
Kind Code:
A1
Abstract:
[PROBLEMS] To obtain maximum throughput in accordance with characteristic of the transmission path. [MEANS FOR SOLVING PROBLEMS] A radio transmission device includes a plurality of transmission antennas (18a, 18b) and spatially multiplexes the transmission signal on sub-carrier unit or performing transmission without performing spatial multiplex. The radio transmission device includes a sub-carrier modulation unit (11) for modulating the inputted transmission signal for each sub-carrier, a transmission signal division unit (13) for dividing the transmission signal modulated for each sub-carrier to each transmission antenna, and a transmission control unit (12) for deciding the number of multiplexes for performing spatial multiplex for each sub-carrier according to the information received from another radio communication device as a communication partner and outputting the decided number of multiplexes to the sub-carrier modulation unit and to the transmission signal division unit.
Inventors:
OKAMOTO NAOKI (JP)
Application Number:
PCT/JP2005/017303
Publication Date:
April 06, 2006
Filing Date:
September 20, 2005
Export Citation:
Assignee:
SHARP KK (JP)
OKAMOTO NAOKI (JP)
OKAMOTO NAOKI (JP)
International Classes:
H04J99/00; H04B7/04; H04B7/06; H04J11/00
Foreign References:
| JP2003318853A | 2003-11-07 | |||
| JP2003032226A | 2003-01-31 | |||
| JP2003530010A | 2003-10-07 | |||
| JP2003204317A | 2003-07-18 | |||
| EP1185001A2 | 2002-03-06 |
Other References:
SAMPATH H: "A simple scalable space-frequency coding scheme for MIMO-OFDM", IEEE 60TH VEHICULAR TECHNOLOGY CONFERENCE, vol. 1, 2004, pages 640 - 644, XP010788455, DOI: doi:10.1109/VETECF.2004.1400086
VANDENAMEELE P: "A combined OFDM/SDMA Approach", IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, vol. 18, no. 11, 1 November 2000 (2000-11-01), XP011450134, DOI: doi:10.1109/49.895036
PENGFEI XIA: "Adaptive MIMO-OFDM based on partial channel state information", 4TH IEEE WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, 15 June 2003 (2003-06-15), pages 551 - 555, XP010713431, DOI: doi:10.1109/SPAWC.2003.1319021
VANDENAMEELE P: "A combined OFDM/SDMA Approach", IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, vol. 18, no. 11, 1 November 2000 (2000-11-01), XP011450134, DOI: doi:10.1109/49.895036
PENGFEI XIA: "Adaptive MIMO-OFDM based on partial channel state information", 4TH IEEE WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, 15 June 2003 (2003-06-15), pages 551 - 555, XP010713431, DOI: doi:10.1109/SPAWC.2003.1319021
Attorney, Agent or Firm:
Fukuchi, Takeo (Shibuya-ku, Tokyo, JP)
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