Multi-carrier radio transmission system, transmission...

Multiplex communications – Communication techniques for information carried in plural... – Adaptive

Reexamination Certificate

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Details

C370S341000

Reexamination Certificate

active

07843960

ABSTRACT:
A multi-carrier radio transmission system able to improve frequency utilization efficiency, and a transmission device and a reception device used in the multi-carrier radio transmission system are disclosed. In the transmission device, at least one sub-carrier set to be the virtual sub-carrier is dynamically designated according to sub-carrier arrangement information. The reception device used in the above system includes an adaptive array antenna unit that is adaptively controlled so that signal components associated with the virtual sub-carriers in the received signals are reduced, and a determination unit that determines a pattern to be used in communications among plural sub-carrier arrangement patterns in which at least some of virtual sub-carrier arrangements are different. Because the virtual sub-carrier arrangement patterns can be used as identification information of radio signals, it is possible to improve utilization of frequency resources compared to the related art.

REFERENCES:
patent: 5956642 (1999-09-01), Larsson et al.
patent: 6870826 (2005-03-01), Ishizu
patent: 6934340 (2005-08-01), Dollard
patent: 6975583 (2005-12-01), Jacobsen
patent: 7085223 (2006-08-01), Izumi
patent: 7486735 (2009-02-01), Dubuc et al.
patent: 7684756 (2010-03-01), Bohnke et al.
patent: 2002/0105947 (2002-08-01), Kitagawa et al.
patent: 2002/0122499 (2002-09-01), Kannan et al.
patent: 2002/0167894 (2002-11-01), Jacobsen
patent: 2003/0043927 (2003-03-01), Suzuki
patent: 2003/0048856 (2003-03-01), Ketchum et al.
patent: 2003/0112880 (2003-06-01), Walton et al.
patent: 2004/0062193 (2004-04-01), Ma et al.
patent: 2004/0139897 (2004-07-01), Nakaya et al.
patent: 2004/0233836 (2004-11-01), Sumasu et al.
patent: 1204233 (2002-05-01), None
patent: 2001-148678 (2001-05-01), None
patent: 2001-339361 (2001-12-01), None
patent: 2002-271240 (2002-09-01), None
patent: WO-97/01256 (1997-01-01), None
patent: WO-02/31991 (2002-04-01), None
ARIB STD-B24, Data Coding and Transmission Specification for Digital Broadcasting. ARIB, Jun. 2000.
ARIB STD-T70, Lower Power Data Communication Systems Broadband Mobile Access Communication System (CSMA), ARIB, Dec. 2000.
International Search Report dated Oct. 7, 2003 for International Application PCT/JP03/08277.
Shuichi Hane, et al. “OFDM Null-Steering Array Antenna”. The Institute of Electronics, Information and Communication Engineers, vol. 102, No. 206, Jul. 12, 2002, pp. 31 to 36.
IEEE Std 802.11a-1999 (Supplement to IEEE Std 802.11-1999), Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, High-Speed Physical Layer in the 5 GHz Band, pp. 1-83.
Notification of Filing Argument mailed Jul. 29, 2006.
Shinsuke Hara, et al. “A Novel OFDM Adaptive Antenna Array for Delayed Signal and Doppler-Shifted Signal Suppression” IEEE 2001, pp. 2302-2306.
“EPO Search Report”, Dated Jul. 23, 2008.
Kapoor, Samir et al., “Adaptive Interference Suppression in Multiuser Wireless OFDM Systems Using Antenna Arrays”,IEEE Transactions on Signal Processing, IEEE Service Center, New York, NY, US, vol. 47, No. 12 XP011058788 Dec. 1, 1999.
“Chinese Office Action”, Complete English-language translation, mailed Jul. 3, 2009 from CN Patent Office for corresponding CN App. No. 03825923.0.

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