Abstract: A multi-user MIMO receiver of a UE in question for detecting a pre-coded signal includes a unit configured to blindly estimate information concerning a pre-coding vector for a paired UE, which is operated on the same resource as the multi-user MIMO receiver, based on received data. Further, the multi-user MIMO receiver comprises an equalizer configured to equalize the pre-coded signal based on the estimated information concerning the pre-coding vector for the paired UE.

Abstract: A transmitter for transmitting an optical signal based on a baseband signal, including an up-transformer for up-transforming the baseband signal to obtain a bandpass signal and a converter for converting the bandpass signal into a signal having a DC-offset. The transmitter further includes a modulator for modulating a light source with the signal having the DC-offsets to transmit the optical signal.

Abstract: A relay station and a method for relaying signals between a first signal source and a second signal source. The relay station includes at least two antennas for receiving/transmitting signals from/to the first and second signal sources. At the relay station first and second signals received from the first and second signal sources are network coded thereby generating a first network coded signal and a second network coded signal. The first and second network coded signals are transmitted from the relay station to the first and second signal sources using different antennas.

Abstract: Provided is an apparatus for signal transmission in a Fast Frequency Hopping-Orthogonal Frequency Division Multiplexing (FFH-OFDM) communication system which divides all of the available frequency bands into a plurality of sub-carrier bands and includes a plurality of sub-channels each including at least one sub-carrier band.

Abstract: A mobile radio terminal device having a communicator for communicating with network elements via data packets and a filter for monitoring the data packets, wherein the filter is implemented to receive a filter regulation from a first network element and to prevent a communication with a second network element when a data packet for communicating with the second network element does not correspond to the filter regulation.

Abstract: Provided is an apparatus for signal transmission in a Fast Frequency Hopping-Orthogonal Frequency Division Multiplexing (FFH-OFDM) communication system which divides all of the available frequency bands into a plurality of sub-carrier bands and includes a plurality of sub-channels each including at least one sub-carrier band.

Abstract: A transmitter and receiver for fast frequency hopping based on a cyclic frequency hopping pattern in an orthogonal frequency division multiplexing system. The transmitter outputs a transmission signal vector having a plurality of samples. In the receiver, a first Fast Fourier Transform (FFT) processor transforms a first received signal vector into a second received signal vector of a frequency domain by using FFT. An equalizer multiplies the received signal vector by an inverse matrix of a channel matrix representing characteristics of a channel from the transmitter to the receiver. A modified IFFT processor transforms output of the equalizer by using IFFT, and multiplies IFFT outputs of a last stage of the modified IFFT processor by predetermined gains associated with the cyclic frequency hopping pattern of the transmitter. A second FFT processor transforms output of the modified IFFT processor by using FFT to output a recovered received signal vector.

Abstract: A transmitter and receiver for fast frequency hopping (FFH) of a sample time unit in an orthogonal frequency division multiplexing (OFDM) communication system. The transmitter includes an FFH frequency modulator for converting the data elements of the data vector into a transmission signal vector that hops to a frequency in a sample time unit according to an FFH pattern of the sample time unit. The receiver includes a Fast Fourier Transform (FFF) processor for transforming a received signal vector after frequency hopping into a second received signal vector of a frequency domain by using FFT, a first equalizer for multiplying the received signal vector by an inverse matrix of a channel matrix representing characteristics of a channel from the transmitter to the receiver, and a frequency hopping recovery unit for outputting a recovered received signal vector.

Abstract: In analogue television systems, it is known to compensate for the receiver-end luminance defects which are caused by transmitter-end low-pass filtering of the gamma-predistorted chrominance signals, with the aid of transmitter-end correction signals. This method for luminance correction can also be used in connection with modern picture coding methods such as e.g. MPEG. To that end, the chrominance is encoded and decoded again in the encoder. A correction signal is derived from the decoded chrominance signal and is used during the encoding of the luminance. The macroblocks which are motion-compensated for prediction are based on the correspondingly decoded chrominance signal and on the decoded, corrected luminance signal.