Base transceiver station with distortion compensation

Details Base transceiver station with distortion compensation Base transceiver station with distortion compensation

2005-03-29

2005-03-29

Trost, William (Department: 2683)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S501000, C455S114300, C455S115100, C455S126000, C375S296000, C375S297000, C330S149000, C330S151000

Reexamination Certificate

active

06873860

ABSTRACT:
A base transceiver station for a radio communication system comprises a transmitter unit (TU), a receiver unit (RU) and a transmit path between the transmitter unit (TU) and an antenna. The receiver unit (RU) determines output data from received signals and the transmitter unit (TU) converts input data into transmitted signals and pre-distorts the transmitted signals using at least one compensation value. The base transceiver station comprises also a branching unit for transferring at least a portion of a transmitted signal from the transmit path to the receiver unit (RU) and a processing unit (PU) which is adapted to receive a representation of the input data and the output data. The processing unit (PU) compares the input data to the output data, determines a first compensation value for the pre-distortion according to the comparison and updates the compensation value of the transmitter unit (TU) with the first compensation value. Methods and computer programs embodying the invention are also described.

REFERENCES:
patent: 5404378 (1995-04-01), Kimura
patent: 5740520 (1998-04-01), Cyze et al.
patent: 6304747 (2001-10-01), Loostrom et al.
patent: 6449466 (2002-09-01), Jin et al.
patent: 6636555 (2003-10-01), Frank et al.
patent: 6693974 (2004-02-01), Jin et al.
patent: 0928072 (1999-07-01), None
patent: 0948227 (1999-10-01), None
patent: 0957587 (1999-11-01), None
European Search Report, Application No. EP 00125718, Jul. 23, 2001, pp. 1-3.
“Digital cellular telecommunications system (Phase2+); Radio transmission and reception (GSM 05.05 version 8.3.0 Release 1999),” Draft GSM 05.05 v8.3.0 (Dec. 1999), pp. 24-25, 82, 88.

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