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325results about How to "Effective leveling" patented technology

Mimo signal processing method involving a rank-adaptive matching of the transmission rate

A bidirectional signal processing method uses parallel transmission of digital transmitted data streams in a multiple input-multiple output system. Related art methods generate high bit error rates mostly in singular transmission channels. For this reason, the rank-adaptive signal processing method provides that the number nd of active subchannels are varied according to the actual channel behavior in order to effect a robust data transmission even in singular radio channels based on a transmit-side and receive-side channel knowledge and a modification of the data vector by a linear matrix vector multiplication while introducing a factor gamma for limiting the maximum transmit power. The maximum transmit power is then only distributed to the currently activated subchannels so that no transmit power remains unused. Another optimization of the number of subchannels nd occurs when selecting the modulation and encoding methods. During the optimal rank-adaptation according to the water-filling principle, another power is allocated to each subchannel. Another modulation and encoding method is accordingly selected for each data stream. During the suboptimal rank-adaptation according to the channel inversion principle, all subchannels have the same power whereby enabling the data streams to be modulated and encoded in a common source
Owner:SIEMENS AG

MIMO signal processing method involving a rank-adaptive matching of the transmission rate

A bidirectional signal processing method uses parallel transmission of digital transmitted data streams in a multiple input-multiple output system. Related art methods generate high bit error rates mostly in singular transmission channels. For this reason, the rank-adaptive signal processing method provides that the number nd of active subchannels are varied according to the actual channel behavior in order to effect a robust data transmission even in singular radio channels based on a transmit-side and receive-side channel knowledge and a modification of the data vector by a linear matrix vector multiplication while introducing a factor gamma for limiting the maximum transmit power. The maximum transmit power is then only distributed to the currently activated subchannels so that no transmit power remains unused. Another optimization of the number of subchannels nd occurs when selecting the modulation and encoding methods. During the optimal rank-adaptation according to the water-filling principle, another power is allocated to each subchannel. Another modulation and encoding method is accordingly selected for each data stream. During the suboptimal rank-adaptation according to the channel inversion principle, all subchannels have the same power whereby enabling the data streams to be modulated and encoded in a common source.
Owner:SIEMENS AG

Wind Turbine and Method for the Automatic Correction of Wind Vane Settings

The invention relates to a wind turbine comprising a machine housing (12) equipped with a rotor (14), which is mounted to pivot on a sub-structure (10). Wind parameters and an electromechanical quantity are determined by means of measuring devices (21, 22, 23). To enable the machine housing (12) to track the wind, the wind turbine is equipped with a pivoting device (11) comprising a controller (8). The wind turbine is also equipped with a calibration module (2), which is configured to determine an effective mass of the electromechanical quantity using the wind speed. In addition, the turbine comprises an evaluation device (4) comprising a classifier (40), which is used to form a first average value for a first class, for which the wind direction is positive and a second average value for a second class, for which the wind direction is negative. A difference is determined by means of a comparator and a calibration signal is emitted to the controller (8) of the pivoting device (11). The invention permits an autonomous calibration of the controller (8) for the tracking of the machine housing (12) and thus reduces the risk of an erroneous positioning of the rotor (14) in relation to the wind direction, irrespective of the prevailing wind conditions. The invention is particularly stable in relation to variable wind forces and directions, especially in the presence of gusts.
Owner:SENVION GMBH

User-friendly and efficient keyboard

InactiveUS6053647ARemarkable level of physical efficiencySpeed advantage is enhancedOther printing apparatusInput/output processes for data processingError reductionTyping
For keyboards, the present invention provides a method of determining suitable letter arrangements, to create an arrangement that is both user-friendly and efficient. The letters in the preferred embodiment are in the familiar alphabetical order so they are easy to find, and their locations are easy to learn and retain. The alphabetical sequence goes from left to right, row by row from top to bottom, first for the left hand, then for the right hand, like reading the pages of a book. This arrangement optimizes efficiency and user-friendliness, maximizing the separation of the most commonly used pairs of letters into the faster, two-handed sequences, while providing a logical and easily recognized layout. The usual four punctuation marks are placed within the layout so as to enhance both of these qualities. The locations chosen add visual symmetry and help to indicate the home positions of the fingers and the division for left and right hands, for a more intuitive and user-friendly layout: they also minimize the frequency of slow or awkward same-finger sequences, yielding higher typing speeds with reduced errors for improved efficiency. The invention far surpasses the existing standard keyboard in both efficiency and user-friendly qualities, and is therefore eminently suitable for both full-time professionals and occasional users.
Owner:PARKINSON JOHN V
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