Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2005-03-02
2010-06-29
Benson, Walter (Department: 2837)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S039000, C455S500000, C455S068000, C455S069000
Reexamination Certificate
active
07747271
ABSTRACT:
To meet a radiated power limit, a transmitting station determines a synthesized antenna pattern based on steering vectors used for spatial processing and estimates an array gain based on the synthesized antenna pattern. Different spatial processing modes (e.g., eigensteering and spatial spreading) result in different synthesized antenna patterns. The array gain may be estimated based on the spatial processing mode used for the data transmission and applicable parameters (e.g., eigenvalues) for that mode. An element gain for each antenna used for data transmission may also be estimated. The transmitting station then limits the transmit power for the data transmission based on the array gain, the element gain, and the radiated power limit, which may be an effective isotropic radiated power (EIRP) limit imposed by a regulatory agency.
REFERENCES:
patent: 6148219 (2000-11-01), Engelbrecht et al.
patent: 6239747 (2001-05-01), Kaminski
patent: 6240098 (2001-05-01), Thibault et al.
patent: 6799026 (2004-09-01), Scherzer et al.
patent: 6873606 (2005-03-01), Agrawal et al.
patent: 7076263 (2006-07-01), Medvedev et al.
patent: 7245880 (2007-07-01), Jacobsen
patent: 7280625 (2007-10-01), Ketchum et al.
patent: 7385914 (2008-06-01), Choi et al.
patent: 2003/0157954 (2003-08-01), Medvedev et al.
patent: 2004/0023621 (2004-02-01), Sugar et al.
patent: 2163052 (2001-02-01), None
patent: 9427381 (1994-11-01), None
patent: 9521494 (1995-08-01), None
patent: WO 02/19562 (2002-03-01), None
patent: 02080400 (2002-10-01), None
P.D. Karaminas et al, “Beamforming type base station power control for personal communication networks”, Electronics Letters, vol. 32, No. 23, Nov. 7, 1996, pp. 2111-2112.
Karaminas P.D. et al., “Beemforming-type base station power control for personal communication networks” Electronics Letters, IEE Stevenage, GB, vol. 32, No. 23, Nov. 7, 1996 pp. 2111-2112.
International Search Report PCT/US06/007811, International Search Authority European Patent office Jun. 21, 2006.
Written Opinion PCT/US06/007811, International Search Authority European Patent office Sep. 2, 2007.
International Preliminary Exam Report PCT/US06/007811, International Search Authority European Patent office Sep. 11, 2007.
Walton Jay Rodney
Zhang Xiangdong
Benson Walter
Franks Ross L.
Luo David S
Nguyen Thien T.
QUALCOMM Incorporated
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