Abstract: An air conditioning unit includes one or more evaporators and the one or more heat exchangers consisting of flat tubes made of light metal. At least one of the heat exchangers, at least one of the evaporators, at least two of the condensed water tanks and at least one of the fans for the one or more evaporators and/or heat exchangers together form one module and are surrounded by a housing. The condensed water tanks are arranged in transverse alignment relative to one another in the module, in order to collect condensed water and can be adapted to various mounting positions of the module. The compressor and/or the expansion valve, respectively, are interchangeable to adapt to various performance requirements of the evaporators. The performance of the fans is changeable to adapt to performance requirements of the evaporators, or the fans are interchangeable.

Abstract: A method for packet data transmission in a communication system is disclosed, where the packet data includes a first type of data packet and at least one alternative second type of data packet. According to the method, quality modifications of a transmission channel used as a connection between a data source and data sinks are detected and, according to the detected quality modification, a data packet type of a successive data packet to be transmitted via the transmission channel is selected.

Abstract: The present invention seeks to improve data exchange in a communications system that is especially standardized according to IEEE 802.11a. For this purpose, when the transmission medium, preferably an IEEE 802.11 system with a distributed coordination function (DCF) is accessed in a decentralized manner, pilot signals are transmitted from the transmitter to the recipients using a number of transmission modes and then an allocation table regarding the transmission modes is calculated by the recipient on the basis of the pilot symbols received. The recipient transmits the allocation table to the transmitter so that the subsequent data exchange can proceed on the basis of the allocation table. In the case of centralized access, preferably an IEEE 802.11 system with a point coordination function (PCF), data exchange is improved in that the subsequent data are adaptively modulated already when the allocation table is transmitted.

Abstract: The invention relates to a louver roller (100) with louver members and mounting in an air nozzle body. In order firstly to ensure rapid installation of the louver members in the louver roller (100) and secondly to provide a secure fastening of the same, the invention proposes that snap-in segments (12) are arranged between end sides (10, 11) of the louver roller (100) and each have, on the louver-member side, a recess (14) into which the louver members can be snapped in a frictional and/or form-fitting manner.

Abstract: A method for reducing signaling overhead in a multicarrier system with dynamic bit allocation per subcarrier and a corresponding transmitter/receiver device, are provided wherein an established bit allocation table (BAT) that is provided with an index (I) is stored in a BAT storage device (LUT). In order to reduce signaling overhead, only the corresponding index (I) of an existing bit allocation table is transmitted (S6).

Abstract: The device has an air nozzle (10) with an adjustable air vent, where the nozzle is closable using a slide or a shutoff flap (28). A manual operating unit of the air vent is arranged adjacent to the front side of the air nozzle. The slide or flap is electrically or manually adjustable using two positioning units (40, 44) in a selective manner. The air nozzle has a frame (20) that is used for mounting an electric motor. A faceplate (26) is arranged on the frame and has recesses (34) for an operating unit. A connection area for an air pipe of the air vent is modularly formed. An independent claim is also included for an air nozzle for a ventilation device.

Abstract: A method and OFDM receiver are provided for reducing the influence of harmonic interference on OFDM transmission systems, wherein high interference unity is achieved by the simultaneous use of a window function and a determined item of reliability information, the window function being a Nyquist-shaped window function which generates low side lobes in the subcarrier and interference spectra while simultaneously leaving the orthogonality of the subcarriers unchanged, the determined item of reliability information being derived from a measurement when transmitting a so-called zero symbol, in order to detect the instantaneously active interference signals, with the high interference immunity being achieved when the subcarrier-specific information is taken into account in a so-called Viterbi decoder.

Abstract: For a voice recognition system in a voice-controlled communication appliance, command words from a vocabulary are entered in text form and are transmitted to a separate converter station via a communication link initiated by the communication appliance, wherein the converter station performs word/model conversion on the command words and sends the reference models created in this way via a communication link to the terminal, in which they are stored and are made available to the voice recognition system.

Abstract: A method and apparatus are provided for operating a transmission amplifier, particularly a mobile communications terminal, with the transmission amplifier being fed with a supply voltage and with any nonlinearity of the transmission amplifier being substantially compensated for via a predistortion unit for data values in an input data stream, wherein, at least at the start of transmission operation or after a considerable change in the operating parameters, the transmission amplifier is operated with a supply voltage which is of such a magnitude that the transmission amplifier operates in the linear region, and the supply voltage for the transmission amplifier is reduced to the extent to which a quality factor for the compensation for the nonlinearity of the transmission amplifier is increased by the predistortion unit.

Abstract: An apparatus and a method for speech recognition are provided, by which, whereby the speech is optionally input via a microphone (14) close to the speaker or a microphone (20) remote from the speaker. A correction unit (15) is connected into the transmission channel (12) with microphone (14) close to the speaker, the correction unit modifying the electrical speech signal in such a way that it contains room transmission characteristics.

Abstract: A method is provided for the adaptive pre-distortion of digital raw data values for a communication appliance output stage having a power amplifier, the method including the following steps: a) the raw data values (Vm) are pre-distorted by multiplying the raw data values by pre-distortion values from a lookup table (2) containing an association between amplitudes of the raw data values and pre-distortion values; b) output signal values (Vr) of the power amplifier (6) are redirected to an adaptation unit (9); d) temporally corresponding raw data values and output signal values are compared in the adaptation unit in order to assess the distortions of the power amplifier (6); and e) the lookup table (2) is adapted on the basis of results of step d). The present invention seeks to dispense with computing power required to adapt pre-distortion values.

Abstract: A communication system and associated method are provided, wherein a quality of service is detected in the communication system, coordination reorganization is performed in order to reorganize coordination functionalities for available stations in the communication system, the previous two steps are repeated for various coordination organizations in the communication system, the various qualities of service detected in the various coordination organizations are analyzed, and a coordination organization is selected on the basis of this analysis, whereupon communication is affected with an external communication system which uses the same transmission medium as the communication system.

Abstract: In order to record and to process audio signals with a good useful-signal to noise-signal ratio in acoustic noise conditions and with a good ratio between the direct sound and the reflected sound in an environment which in particular has no reverberation electrical signals produced by conversion of audio signals recorded by a predetermined microphone arrangement are processed in such a manner that, if the sound pressure levels at the microphones in the microphone arrangement are the same, electrical signals which are produced by these microphones but are of different intensity—different sensitivities of the microphones—are automatically matched, without any manual matching procedures needed to be carried out individually and separately. A microphone arrangement is based on combining the characteristics of an array of microphones with those of a method for matching the sensitivity of microphones.

Abstract: The present invention seeks to improve data exchange in a communications system that is especially standardized according to IEEE 802.11a. For this purpose, when the transmission medium, preferably an IEEE 802.11 system with a distributed coordination function (DCF) is accessed in a decentralized manner, pilot signals are transmitted from the transmitter to the recipients using a number of transmission modes and then an allocation table regarding the transmission modes is calculated by the recipient on the basis of the pilot symbols received. The recipient transmits the allocation table to the transmitter so that the subsequent data exchange can proceed on the basis of the allocation table. In the case of centralized access, preferably an IEEE 802.11 system with a point coordination function (PCF), data exchange is improved in that the subsequent data are adaptively modulated already when the allocation table is transmitted.

Abstract: A transmission facility (UE) for the transmission of information via power supply lines (EV) is integrated into the charging device (L) for mobile communication devices (M). Personal computers (PC) connected to these power supply lines (EV) can gain access to other networks such as local or broadband networks (LAN, WAN) via the inserted mobile communication device (M). The integration means that essential components of the charging device (L) have multiple applications and access overall is realized cost effectively.

Abstract: The invention relates to a method for packet data transmission in a communication system, said packet data comprising a first type of data packet and at least one alternative second type of data packet. According to said method, quality modifications of a transmission channel used as a connection between a data source and data sinks are detected and, according to the detected quality modification, a data packet type of a successive data packet to be transmitted via the transmission channel is selected.