Telecommunications – Transmitter
Reexamination Certificate
2006-09-19
2006-09-19
Nguyen, Simon (Department: 2618)
Telecommunications
Transmitter
C455S115100, C455S125000, C455S127100, C455S127200
Reexamination Certificate
active
07110727
ABSTRACT:
The invention relates to methods for determining the separate radio frequency gains for carriers in a multi-carrier transmitter of a radio transmission unit of a radio communications system. In order to enable a simple and accurate estimation of the gains, it is proposed to determine the individual gains (G1–GN) of the different carriers mathematically from different sets of powers (REF1–REFN) at some point in each single carrier unit and the corresponding total output powers of the transmitter. Alternatively, the relation of the powers of the different carriers to each other is determined just before the carriers are combined to a single multi-carrier signal. This relation is used for determining the contribution of the different carriers to the transmission power of the multi-carrier signal and for therefrom determining the radio frequency gains for the different carriers. The invention equally relates to corresponding radio transmission units and modules of such radio transmission units.
REFERENCES:
patent: 5697072 (1997-12-01), Shibata
patent: 5710990 (1998-01-01), Long et al.
patent: 5732334 (1998-03-01), Miyake
patent: 5884149 (1999-03-01), Jaakola
patent: 5959499 (1999-09-01), Khan et al.
patent: 6108527 (2000-08-01), Urban et al.
patent: 6125266 (2000-09-01), Matero et al.
patent: 6151509 (2000-11-01), Chorey
patent: 6215988 (2001-04-01), Matero
patent: 6397077 (2002-05-01), Jensen
patent: 6496708 (2002-12-01), Chan et al.
patent: 6570929 (2003-05-01), Eriksson
patent: 6633766 (2003-10-01), van der Pol
patent: 6662018 (2003-12-01), Kintis et al.
patent: 0 473 299 (1992-03-01), None
patent: 11-154927 (1999-06-01), None
patent: 2001-045389 (2001-02-01), None
patent: WO 00/01084 (2000-01-01), None
patent: WO 01/05057 (2001-01-01), None
patent: WO 01/05111 (2001-01-01), None
patent: WO 01/15335 (2001-03-01), None
European Search Report Dated Jan. 17, 2005 in EPO application No. EP 04 02 4626.
European Office Action Dated Jun. 16, 2004 in EPO application No. 01 936 237.5.
Johansson M., Mattsson T. and Faulkner M.: “Linearization of Multi-Carrier Power Amplifiers”, Proceedings of the Vehicular Technology Conference, New York, IEEE, US, May 18, 1993- May 20, 1993, vol. Conf. 43, pp. 684 to 687.
Translation of a Japanese Examination Report issued Jul. 25, 2005 in JP 2002-582543.
Nguyen Simon
Nokia Corporation
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