Abstract: A method of channel estimation for a receiver side antenna array includes receiving a first signal associated with a pilot tone transmitted by a transmitter side antenna array, obtaining a first group of neural network models trained for channel estimation based on the pilot tone, inputting a representation of the received first signal into each neural network model of the first group, performing one-dimensional interpolation for second signals associated with data tones in at least one of time domain and frequency domain, obtaining a second group of neural network models trained for channel estimation in presence of interpolation errors based on the data tones, and for each one-dimensional interpolation, inputting an interpolated channel estimate of the generated interpolated channel estimates into each neural network model of the second group and generating a corrected interpolated channel estimate for a second signal.

Abstract: An apparatus, method and computing program is described including: receiving one or more received symbols and one or more received bits, wherein the received symbols are received at a receiver of a transmission system including a transmitter, a channel, and the receiver; converting one or more of the received bits that are deemed to be correct into one or more estimated transmission symbols; generating an estimated channel transfer function based on one or more of the estimated transmission symbols and corresponding received symbols; and providing training data pairs, each training data pair including a first element based on the estimated channel transfer function and a second element based on the corresponding received symbols.

Abstract: It is provided a method, comprising identifying a value of an onsite channel characteristic of a receive channel; requesting a neural network parameter, wherein the request comprises an indication of the onsite channel characteristic; monitoring if the neural network parameter is received in response to the request; estimating the receive channel by a neural network using the neural network parameter if the neural network parameter is received.

Abstract: A method of channel estimation for an antenna array is disclosed. The method includes, receiving a signal transmitted by the antenna array, obtaining a neural network model trained for channel estimation using the received signal, inputting a representation of the received signal into the neural network model and generating a channel estimate for the received signal, and deciding whether to employ a further neural network model for the channel estimation.

Abstract: It is provided a method, comprising identifying a value of an onsite channel characteristic of a receive channel; requesting a neural network parameter, wherein the request comprises an indication of the onsite channel characteristic; monitoring if the neural network parameter is received in response to the request; estimating the receive channel by a neural network using the neural network parameter if the neural network parameter is received.

Abstract: There is provided a method comprising a method comprising receiving a plurality of signals at a first receiver of a plurality of first receivers associated with a vehicle. At least one of the plurality of signals comprises at least one message. The method comprises processing the plurality of signals to determine the at least one message and providing the at least one message to a controller. The controller is configured to verify the at least one message for use in determining vehicle action.

Abstract: There is provided a method comprising a method comprising receiving a plurality of signals at a first receiver of a plurality of first receivers associated with a vehicle. At least one of the plurality of signals comprises at least one message. The method comprises processing the plurality of signals to determine the at least one message and providing the at least one message to a controller. The controller is configured to verify the at least one message for use in determining vehicle action.

Abstract: Localization of the mobile device uses a non-orthogonal multiple access (NOMA) scheme involving base stations, where localization is accomplished by sending a positioning request to the base stations, and receiving base station coordinate information and direction of arrival (DoA) information from the base stations. Distance information is computed based on the base station coordinate information. A location of the mobile device is determined based on the DoA information and the distance information.

Abstract: The method includes a first encryption step of encrypting each of a plurality of data streams to obtain a respective encrypted data stream, a mapping step of mapping the plurality of encrypted data streams obtained in the first encryption step to a plurality of transmission streams for transmission via the optical transmission units, wherein the transmission streams and optical transmission units are in a one-to-one relationship, and wherein each transmission stream is mapped to by at least two of the plurality of encrypted data streams. The method further includes a second encryption step of encrypting each of the plurality of transmission streams to obtain a respective encrypted transmission stream, and a transmission step of transmitting each of the plurality of encrypted transmission streams obtained in the second encryption step via a respective optical transmission unit.

Abstract: The embodiments of the invention relate to a transmitter apparatus (TA1) for conditioning a multicarrier signal (RFS). The transmitter apparatus (TA1) contains means (FE-PU) for grouping subcarriers of the multicarrier signal (RFS) into a first frequency block, which contains a first group of the subcarriers and into at least a second frequency block, which contains at least a second group of said subcarriers. The transmitter apparatus (TA1) further contains first filtering means (LPF-1) for sideband suppression outside of the first frequency block and at least second filtering means (LPF-2, LPF-M) for simultaneous and separate sideband suppression outside of the at least second frequency block. The embodiments of the invention further relate to a method for conditioning a multicarrier signal (RFS).

Abstract: A sounding method in a cellular wireless communication system, comprising at least one mobile station and at least two base stations. One base station is a serving base station for the mobile station and the at least one further base station is a neighboring base station. The serving base station generates a schedule for measurement signals and transmits said schedule to the mobile station and to the neighboring base station. The mobile station transmits measurement signals in accordance with the schedule to the serving base station and to the neighboring base station. Furthermore, the neighboring base station calculates a mean channel state for the uplink channel from the mobile station to itself and transmits the mean channel state to at least one further base station, so that said base station can be provided with channel estimations for uplink channels between the mobile station and all base stations.

Abstract: The embodiments of the invention relate to a transmitter apparatus (TA1) for conditioning a multicarrier signal (RFS). The transmitter apparatus (TA1) contains means (FE-PU) for grouping subcarriers of the multicarrier signal (RFS) into a first frequency block, which contains a first group of the subcarriers and into at least a second frequency block, which contains at least a second group of said subcarriers. The transmitter apparatus (TA1) further contains first filtering means (LPF-1) for sideband suppression outside of the first frequency block and at least second filtering means (LPF-2, LPF-M) for simultaneous and separate sideband suppression outside of the at least second frequency block. The embodiments of the invention further relate to a method for conditioning a multicarrier signal (RFS).

Abstract: An concept for providing first data detection information on a first data signal of a first mobile transceiver and second data detection information on a second data signal of a second mobile transceiver, comprising means (110) for communicating with the first mobile transceiver for receiving a first receive signal vector from the first mobile transceiver, the first receive signal having been received from a base station transceiver by the first mobile transceiver, and means (120) for communicating with the second mobile transceiver for receiving a second receive signal vector from the second transceiver, the second receive signal having been received from the base station transceiver by the second mobile transceiver.

Abstract: The present invention relates to measurement in radio communication systems. In particular, the present invention relates to a sounding method in a cellular wireless communication system, the communication system itself and its components like base stations and mobile stations. The radio communication system (1) comprises at least one mobile station (2) and at least two base stations (3, 4). One of said base stations is a serving base station (3) for the mobile station (2) and the at least one further base station is a neighboring base station (4) of the serving base station (3). The serving base station (3) is adapted to generate a schedule for measurement signals and to transmit said schedule to the mobile station (2) and to the neighboring base station (4). The mobile station (2) is adapted to transmit measurement signals in accordance with said schedule to the serving base station (3) and to the neighboring base station (4).

Abstract: The invention relates to a frequency reuse method in a base station of a Frequency Division Multiplexing Access wireless communication system, the wireless communication system comprising at least the base station adapted for covering a cell, at least one wireless terminal coupled to the base station, the method comprising the steps of: calculating a maximum number of beams per cell by obtaining a number of antennas of the base station; initiating a fixed null-steering beamforming by setting a number of orthogonal fixed beams to a first constant on a portion of the cell, if a traffic of the base station is bigger than a first threshold; obtaining an absolute or an approximate location of the wireless terminal within the cell; scheduling the wireless terminal to fixed null-steering resources, if the absolute or approximate location of the wireless terminal is within the beam zone of the cell; setting the number of orthogonal fixed beams to a second constant of the fixed null-steering beamforming, if the traffi

Abstract: The invention relates to a method of selecting link adaptation characteristics in a base station of an OFDM mobile digital communication system, the base station being coupled to at least one mobile station, the method comprising the steps of: measuring a mobile station's velocity in the mobile station; receiving a mobile station's velocity value from the mobile station by the base station; calculating a channel estimation and equalization with a first algorithm by the base station, if the mobile station's velocity value is smaller than a first threshold; activating a MIMO Matrix B and activating an AMC permutation mode by the base station, if the mobile station's velocity value is smaller than the first threshold, and if the mobile station occupies multiple antennas; activating a beamforming algorithm and activating the AMC permutation mode by the base station, if the mobile station's velocity value is smaller than the first threshold, and if the mobile station does not occupy multiple antennas.