Lucent Technologies Inc.

Norbert Bogner

Kai-Uwe Ritter

Gerhard Helmut Hertlein

Horst Schenkel

Martin Lehnert

Albrecht Schuh

A system and method for receiving output signals from each receiver of multiple receivers, the output signals generated based on receipt of a same transmission; incrementing a count value associated with each receiver based on the output signals; and determining whether a fault in a receiver exists based on the associated count values of the receivers.

System and method for detecting a fault in a multiple receiver system

The application relates to transmission power control in transmission systems, in particular mobile radio systems. One object of the invention is to indicate a way of guaranteeing, compared with the state of the art, improved, in particular dynamic, control of transmission powers within predefinable emitted interference requirements with, in particular, increased efficiency and reduced power consumption. For this purpose, the invention provides for the filtering of an amplified transmission signal to be divided up between a narrower-band tunable pre-filter () and a broadband post-filter (). To perform this operation, a signal-amplification circuit is proposed which comprises a tunable filter () which is connected downstream of a power amplifier ().

Channel-selective amplifier with tunable filter

A base station in a communication network which has a number of receiver or transmitter circuits (TRX) and a number of splitters (SP , . . . SP ) is provided with switchable divider circuitry, if the number of receiver or transmitter circuits (TRX) is other than 2 (n&equals;2, 3, 4, . . . ). The divider circuit has at least an input, preferably two inputs (IN-A, IN-B), an attenuation member, preferably two members (AT , AT ) and a divider element (DE), preferable three elements (DE , DE , DE ) and is connected parallel to a respective splitter (SP) so as to offer further splitter outputs for being connected to the inputs of remaining receivers or transmitter circuits (TRX) other than 2 .

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Bavaria, Germany

Norbert Bogner