Rohde and Schwarz Gmbh & Co. Kg

Siemens Aktiengesellschaft

Heino Gerlach

Gottfried Holzmann

Rolf Lorenzen

Andreas Pauly

Martin Oetjen

Moritz Harteneck

Adrian Schumacher

Frank Burkert

Matthias Jelen

Gerald Tietscher

Henry Gropp

Volker Fischer

Martin Mueller

Stefan Ballmann

Martin Müller

A mobile radio testing device for protocol testing of a device under test is provided. The mobile radio testing device comprises a downlink path and an uplink path, wherein the uplink path comprises at least a first analysis mode and a second analysis mode. In this context, the mobile radio testing device includes a demodulation processing unit for analyzing signals from the device under test in the first analysis mode. In addition, the second analysis mode analyzes signals from the device under test without using the demodulation processing unit.

Mobile radio testing device and method for protocol testing

A method for determining a channel quality for the transmission of data in the channel by a test device. The test device transmits the data with the determined channel quality to a device to be tested which determines one or more pieces of decision information. The device to be tested forwards the piece(s) of decision information to the test device as a response signal and the test device reads the piece(s) of decision information from the response signal. The piece(s) of decision information from the response signal is/are uniquely attributed to a transmission mode to be adjusted. The initially determined channel quality is also uniquely attributed to an expected transmission mode. The expected transmission mode is compared with the transmission mode to be adjusted in a comparative unit in the evaluation unit, thereby allowing a statement regarding the correctness of the transmission mode to be adjusted.

Method for testing the transmission modes of a radio device

The invention relates to a method for generating multi-antenna signals. Firstly, the propagation conditions between channel coefficients, which each describe one transmitter antenna and one receiver antenna, are generated. Furthermore, weighting factors are generated to weight signals to be transmitted via one transmitter antenna in each case. Taking the channel coefficients (h) and the weighting factors (W), into consideration, received signals arriving therein are calculated for each receiver antenna. A transmitted signal is generated in each case from the calculated arriving received signals, which corresponds to the calculated received signal for said receiving device. The particular transmitted signals are generated by a signal generator and transmitted to the associated receiving device.

Method for generating multi-antenna signals

A method detects a bandwidth that is transmitted by a transmitter in a radio communications system, which is based on transmission frames. The transmission frames comprise a fixed time extension and a variable spectral extension. The transmission frames consist of a plurality of sub-units. Each sub-unit of the transmission frames contains a control channel, which is subdivided into two sub-control channels. The two sub-control channels are arranged at the spectral edges of the sub-units of the transmission frames. The transmitted bandwidth is investigated by determining the spectral extension of the transmission frame. The spectral extension of the transmission frame is determined by determining the spectral position of the sub-control channels in the sub-units of the transmission frames.

Method and system for bandwidth detection

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Munich, Germany

Heino Gerlach