Interdigital Technology Corporation

Siemens Aktiengesellschaft

Jan Meyer

Alexander Reznik

Peter Bohnhoff

John David Kaewell, Jr

Edward L Hepler

William C Hackett

Michael J Koch

David S Bass

Steven Ferrante

Timothy Berghuis

Bernhard Raaf

Clyde N Robbins

Wen Xu

Ludwig Hofmann

Frank Lillie

Timothy Berghius

Nico Hantke

Frank Von Bergen

Apparatus and method for correlating a received communication of a known sequence over a wireless channel through the use of a finite impulse response (FIR) filter having a small number of taps to reduce hardware requirement by as much as one-half that of conventional techniques while obtaining amplitude degradation which is no worse than experienced when employing conventional techniques.

Apparatus and method of searching for known sequences

A Node-B/base station has an access burst detector. The access burst detector comprises at least one antenna for receiving signals from users and a pool of reconfigurable correlators. Each correlator correlates an inputted access burst code at an inputted code phase with an inputted antenna output. An antenna controller selectively couples any output of the at least one antenna to an input of any of the correlators. A code controller provides to an input of each correlator an access burst code. The code controller controls the inputted code phase of each controller. A sorter/post processor sorts output energy levels of the correlators.

Access burst detector correlator pool

A wireless transmit receive unit (WTRU) and methods are used in a wireless communication system to process sampled received signals to establish and/or maintain wireless communications. A selectively controllable coherent accumulation unit produces power delay profiles (PDPs). A selectively controllable post processing unit passes threshold qualified magnitude approximation values and PDP positions to a device such as a rake receiver to determine receive signal paths.

Received communication signal processing methods and components for wireless communication equipment

A Node-B/base station receiver comprises at least one antenna for receiving signals. Each finger of a pool of reconfigurable Rake fingers recovers a multipath component of a user and is assigned a code of the user, a code phase of the multipath component and an antenna of the at least one antenna. An antenna/Rake finger pool interface provides each finger of the Rake pool an output of the antenna assigned to that Rake finger. A combiner combines the recovered multipath components for a user to produce data of the user.

Node-B/base station rake finger pooling

A Node-B/base station has a path searcher and at least one antenna for receiving signals from users. The path searcher comprises a set of correlators. Each correlator correlates an inputted user code with an inputted antenna output of the at least one antenna. An antenna controller selectively couples any output of the at least one antenna to an input of each correlator of the set of correlators. A code phase controller selects a user code for input into the set of correlators. Each delay of a series of delays delays the selected user code by a predetermined amount and each correlator of the set of correlators receives a different code phase delay of the selected user code. A sorter and path selector sorts the output energy levels of each correlator of the sets of correlators and produces a path profile for a user based on the sorted output energy levels.

Path searcher using reconfigurable correlator sets

The received mobile radiotelephone signal is analyzed in a mobile radiotelephone receiver () for the presence of adjacent channel interference and is only filtered if adjacent channel interference is determined, in order to suppress the same. The selectively filtered mobile radiotelephone signal is then conveyed, e.g. to an equalizer () for further processing.

Method for filtering a mobile radiotelephone signal and corresponding mobile radiotelephone receiver

A terminal and a method for a digital mobile radio system having a receiving device for receiving digital data packets, and having a decision device which before complete reception of an information unit, which comprises one or more data packets, uses a part of the information unit which has already been received to determine whether the information unit is or is not important. If it is determined that the information unit is not important, the decision device causes the receiving unit to ignore the rest of the information unit.

Terminal for digital mobile radio and method for evaluating data received in such a terminal

The present invention relates to a method for maintaining a time reference which is governed by a high clock frequency produced by a first clock frequency generator, in which a changeover is essentially made, for a changeover time period, to a low clock frequency produced by a second clock frequency generator. The apparatus of the invention maintains the time reference governed by the high clock frequency, wherein a changeover is made to the low clock frequency for a specific changeover time period. The invention is advantageously used to save power in electronic apparatus such as in mobile stations of mobile radio systems.

Method and apparatus for using a low clock frequency to maintain a time reference governed by a high clock frequency

A method for transmitting messages is described which is based on the idea of using bit groups of a data packet, which are not required for assigning the bit groups to a specific logic channel, for transmitting a type of information specific to the bit group for the purpose of transmitting a different type of information. In particular new signaling information, the importance of which could not yet have been recognized when the data packets or the bit group structure thereof was being defined, or the transmission of which was not yet regarded as necessary when laying down the transmission standard.

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Weilheim, Germany

Jan Meyer