Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2004-12-23
2010-06-29
Nguyen, David Q (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S276100, C342S174000, C342S377000, C370S252000
Reexamination Certificate
active
07747250
ABSTRACT:
The present invention relates to a method and arrangement to enhance the communication performance in wireless communication systems. The method of the invention provides a method of calibrating at least one first radio node in a wireless communication network. The communication network comprises at least a first radio node and a second radio node, which can be arranged to be in radio communication with each other. The calibration method is based on that at least one representation of radio channel characteristics, which has been exchanged from one radio node to the other. Whereby inaccuracies and differences in transmit receive chains are compensated and channel reciprocity can be used.
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Universal Mobile Telecommunications System(UMTS):Physical Layer Procedures(FDD) (3GPP TS 25.214 Version 3.4.0 Release 1999), Sep. 2000, ETSI TS 125 214 V3.4.0, pp. 1-48, XP002166612.
Universal Mobile Telecommunications System(UMTS):Physical Layer Procedures(FDD) (3GPP TS 25.214 Version 3.4.0 Release 1999), Sep. 2000, ETSI TS 125 214 V3.4.0, pp. 1-47.
Guey Jiann-Ching
Larsson Peter
Nguyen David Q
Nixon & Vanderhye P.C.
Telefonaktiebolaget LM Ericsson (publ)
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