Alcatel

Tcl Communications Technology Holdings Limited

Jean-Hugues Perrin

Alexandre Da Rocha

Elie Bejjani

Paul Anandanarayanane

Javier Sanchez

A receiver of a mobile radio terminal in a telecommunication system includes a radio frequency signal generator, a frequency transposer, a high-pass filter which filters a static component and a dynamic component of interference induced by the operation of the radio frequency generator and the frequency transposer, and a digitizer. The high-pass filter has a predetermined cut-off frequency to eliminate the static component and a portion of the dynamic component before the signal enters the digitizer. A residual dynamic component is eliminated by a digital filter placed after the digitizer and a corrector.

Receiver for a mobile radio terminal

A method of correcting frequency errors for use in CDMA mobile radio terminals which is adaptive, depending on the value of the frequency error. There are thus three different frequency error correction processing modes: a processing mode with no correction, an open-loop processing mode for coarse correction, and finally a closed-loop processing mode for very accurate correction. The frequency error processing modes are selected by a central control unit as a function both of the value of the frequency error and of quality factor determined by a quality control unit of a channel coefficient filter.

Method of correcting frequency error

Receiver for enhanced performance for CDMA radio transmission comprising roke receiver with a path searcher ( ), a channel estimator ( ) and a combiner ( ) for selecting optimal paths where the path searcher selects a set of path delays ( ) with an instantaneous profile analyzer ( ), an averaging filter ( ) and a path selector ( ) where at least two instantaneous profile analyzers ( ) are connected to the averaging filter ( ).

Receiver and method with enhanced performance for CDMA transmission

Receiver for enhanced performance for CDMA radio transmission comprising a Rake receiver ( ) with a path searcher ( ), a channel estimator ( ) and a combiner ( ) for selecting optimal channels paths where the path searcher ( ) selects a set of path delays ( ) where at least two path searchers ( ) are connected in way that the output of the first path searcher ( ) is linked to one input of the second path searcher ( ).

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Argenteuil, France

Jean-Hugues Perrin