Abstract: A spinal therapy apparatus (10) including at least one gripping member (26) whose direction deviates from the transverse direction relative to the spinal column, so that the angle between said gripping member and the midline of the spinal column is less than 90°. A gripping member unit (20) comprising most preferably two said gripping members (26), the angle between the ridges of said gripping members being less than 180°. There is a gap or groove (27) between said gripping members (26). Said gripping member unit (20) of the spinal therapy apparatus includes, in addition to said gripping members (26), also a support part (28), on which the user of the spinal therapy apparatus can support him/herself, and said support part being padded, most preferably comprised of two parts and in an inclined position relative to the floor level (15). Most preferably, there is a groove (64) between said gripping member (26) and said support part (28).

Abstract: A spinal therapy apparatus including at least one gripping member whose direction deviates from the transverse direction relative to the spinal column, so that the angle between the gripping member and the midline of the spinal column is less than 90°. A gripping member unit includes preferably two gripping members the angle between the ridges of the gripping members being less than 180°. There is a gap or groove between the gripping members. The gripping member unit also includes a support part, the support part being padded, preferably including two parts and in an inclined position relative to the floor. There is a groove between the gripping member and the support part. The spinal therapy apparatus may also incorporate at least one support handle, which the user can use to move the required part of the spinal column to the ridges of the gripping members.

Abstract: An apparatus includes circuitry configured to determine that one or more neighbor transmission cells have interfering downlink data channels to be transmitted by one or more antenna groups. Virtual configuration parameters are determined for the interfering downlink data channels. The circuitry is also configured to signal, to at least one user equipment (UE) served by a serving cell that is one of the one or more neighbor transmission cells having interfering downlink data channels, the virtual configuration parameters for the interfering downlink data channels.

Abstract: A spinal therapy apparatus (10) including at least one gripping member (26) whose direction deviates from the transverse direction relative to the spinal column, so that the angle between said gripping member and the midline of the spinal column is less than 90°. A gripping member unit (20) comprising most preferably two said gripping members (26), the angle between the ridges of said gripping members being less than 180°. There is a gap or groove (27) between said gripping members (26). Said gripping member unit (20) of the spinal therapy apparatus includes, in addition to said gripping members (26), also a support part (28), on which the user of the spinal therapy apparatus can support him/herself, and said support part being padded, most preferably comprised of two parts and in an inclined position relative to the floor level (15). Most preferably, there is a groove (64) between said gripping member (26) and said support part (28).

Abstract: A method is shown for equalizing signals transmitted via at least one transmission antenna and received by at least one reception antenna (2,4). To reduce filter complexity, chip-samples of the received signals are selected such that only one sample per chip is selected for each filter (30, 32; 34, 36).

Abstract: The invention relates to a data transfer method and a data transfer system between a first and a second transceiver, the data transfer comprising transmitting a data signal from the first transceiver to the second transceiver in a broadband channel, measuring, at the second transceiver, the frequency response of the channel and the frequency response of the data signal from the received signal. Measurement results are compared with each other and a need for change in the frequency response of the data signal is determined on the basis of the comparison. Information about the need for change is transmitted to the first transceiver and the frequency response of the data signal to be transmitted is modified at the first transceiver on the basis of the information.

Abstract: A receiving method and a receiver of a telecommunication system are provided. The receiver comprises one or more antennas, a radio frequency unit connected to the antennas for receiving signals transmitted by one or more transmitters using a multitude of channels, and an estimator. The estimator is configured to select one or more channel pairs, each channel of each channel pair being a given distance from each other, determine symbol estimates for the signals of the channels of the channel pairs, remove the effect of data modulation from the signals of the channels of the channel pairs, obtain noise estimates by subtracting the signals of the channels of the channel pairs from each other, and determine a noise covariance matrix for the desired channel on the basis of the obtained noise estimates.

Abstract: The invention concerns methods and apparatus for performing channel equalization in a direct-sequence spread spectrum communications system. The methods and apparatus of the present invention are particularly applicable in situations where communication occurs over a channel experiencing multipath interference associated with paths having significantly different lengths. The impulse response-delay profile of such a channel is typically sparse, that is, dominated by a relatively few and widely spaced taps or clusters of closely spaced taps. In one aspect, equalization filter coefficients are calculated based on a channel estimate derived from a single cluster of closely-spaced channel taps collectively having the greatest percentage of energy as indicated by the impulse response-delay profile.

Abstract: A digital communication system (20) in which a signal constellation (30) of a dimensionality of at least four is used, with distance properties chosen to reduce the bit error rate compared to that of digital communication systems using signal constellations of half the dimensionality. A symbol generator (21) uses the higher dimensional signal constellation (30), or any orthogonal transformation of the higher dimensional signal constellation (30), to translate a bit stream into a stream of higher dimensional symbols, which it then provides to a modulator (22). The modulator (22) transmits each higher dimensional symbol in at least two parts, using a modulation scheme according to the prior art, such as QAM or QPSK.

Abstract: A receiver includes a channel estimator for estimating a channel impulse response of a radio channel; an equalizer for generating linear minimum mean-square error equalizer coefficients and providing an equalized signal to a correlator; an estimating unit for forming an initial estimate of received data elements on the basis of an equalized signal; and a processing unit. The processing unit is configured to calculate a scaling factor by taking an inverse value, subtracted from a value of one, of a conjugate transpose of a linear minimum mean-square error equalizer coefficient vector multiplied by a channel impulse response vector, and to use the scaling factor for determining reliability of the initial estimate of the received data elements.

Abstract: A method is disclosed to obtain M final symbol decisions for signals received through N receive antennas that were transmitted in M parallel data layers, using a same spreading code from M transmit antennas. The method includes space-time equalizing the N received signals to generate M output signals from which at least inter-symbol interference is substantially removed and inter-layer interference is suppressed; despreading each of the M output signals for generating M soft symbol estimates; and processing the M soft symbol estimates to derive M final symbol decisions that are made in consideration of modeled residual inter-layer interference present in the space-time equalized M output signals. Processing includes operating a signal-plus-residual-interference (SPRI) detector that operates in accordance with a maximum likelihood (ML) technique, while space-time equalizing employs a linear minimum mean-square error (LMMSE) criterion.

Abstract: A receiver for use in a CDMA telecommunications system is disclosed. The receiver includes at least one antenna for receiving signals from a CDMA channel, an estimator for estimating an impulse response of the channel, and an adaptive equalizer. The estimator provides a reference for the adaptive equalizer, and the adaptive equalizer operates to estimate a transmitted chip sequence of the channel and to restore orthogonality among the received signals. The adaptive equalizer includes circuitry for utilizing a blind adaptive algorithm to estimate the transmitted chip sequence of the channel.

Abstract: The invention relates to a data transfer method and a data transfer system between a first and a second transceiver, the data transfer comprising transmitting a data signal from the first transceiver to the second transceiver in a broadband channel, measuring, at the second transceiver, the frequency response of the channel and the frequency response of the data signal from the received signal. Measurement results are compared with each other and a need for change in the frequency response of the data signal is determined on the basis of the comparison. Information about the need for change is transmitted to the first transceiver and the frequency response of the data signal to be transmitted is modified at the first transceiver on the basis of the information.

Abstract: A digital communication system (20) in which a signal constellation (30) of a dimensionality of at least four is used, with distance properties chosen to reduce the bit error rate compared to that of digital communication systems using signal constellations of half the dimensionality. A symbol generator (21) uses the higher dimensional signal constellation (30), or any orthogonal transformation of the higher dimensional signal constellation (30), to translate a bit stream into a stream of higher dimensional symbols, which it then provides to a modulator (22). The modulator (22) transmits each higher dimensional symbol in at least two parts, using a modulation scheme according to the prior art, such as QAM or QPSK.