Abstract: There is provided mechanisms for reshaping individual beams of a beam pattern. A method is performed by a control node. The method comprises determining the beam pattern by distributing available transmission energy in individual beams according to a weighted combination of the individual beams. Different weights are applied for at least two of the individual beams. The weighted combination of individual beams is based on radio propagation channel properties. The method comprises truncating transmission energy of the individual beam with highest transmission energy in the beam pattern to not be over a threshold. The method comprises redistributing the truncated transmission energy among the remaining individual beams in the beam pattern, thereby reshaping the individual beams of the beam pattern.

Abstract: The present invention concerns a cellular communication network having a base station serving a radio cell and at least one user equipment located within the radio cell, wherein the base station is configured to receive a radio signal from the user equipment and to determine at least one signal property of the received radio signal, wherein the base station is further configured to assign a user equipment identifier to the user equipment based on the a least one determined signal property. The present invention further concerns a base station to be used in the above mentioned cellular network as well as corresponding methods.

Abstract: Methods and an apparatus are disclosed for orthogonal frequency division multiplexing (OFDM) and/or single carrier (SC) based multiple input multiple output (MIMO) hybrid beamforming (HBF) including determining the capabilities of a station (STA) such as the capability for hybrid beamforming, single user MIMO (SU-MIMO), and multi user MIMO (MU-MIMO). An announcement frame with a control trailer may be transmitted to signal a transmission configuration. The announcement frame may be a grant frame or a request to send (RTS) frame if the STA is SU-MIMO capable or a RTS frame or a DMG clear to send (CTS)-self frame if the STA is MU-MIMO capable. One or more directional multi-gigabit (DMG) antennas may be configured based on the announcement frame. One or more sounding symbols may be transmitted and feedback may be provided based on the sounding symbols. An HBF signal may be transmitted based on the sounding symbol(s) and/or feedback.

Abstract: In a relay device, a communication unit receives a data frame transmitted cyclically through a communication line. A control unit stores, in a temporary storage unit, the data frame received by the communication unit. When the data frame stored in the temporary storage unit is transmitted, the control unit deletes the transmitted data frame from the temporary storage unit. When the control unit determines that, for the data frame received through the communication line, the amount of data relevant to the data frames stored in the temporary storage unit is equal to or greater than a threshold value, the communication unit transmits, through the communication line, a cycle change frame which gives an instruction to change a transmission cycle for transmitting the data frame to a longer cycle.

Abstract: A radio frequency module includes: a switch that includes: a common terminal connected to a first common transmission path; a first selection terminal connected to a first transmission path; and a second selection terminal connected to a second transmission path, and switches between connecting the common terminal to the first selection terminal and to the second selection terminal; a transmission power amplifier disposed on the module board and on first common transmission path; and first circuit components disposed on a reception path. The first transmission path is a path through which a transmission signal of a first communication band is transferred, the second transmission path is a path through which a transmission signal of a second communication band is transferred, the switch is disposed on a first principal surface, and at least one of the first circuit components is disposed on a second principal surface.

Abstract: A method of determining reserved tones to be used for reduction of a peak to average power ratio (PAPR) of a signal includes: randomly selecting carrier indices for the reserved tones and generating a kernel signal based on the randomly selected carrier indices; calculating a comparison reference average value of the kernel signal, comparing the calculated comparison reference average value with a prestored comparison reference average value, and preliminarily determining carrier indices of the reserved tones based on the comparison; randomly re-arranging an order of the preliminarily determined carrier indices of the reserved tones; and calculating the comparison reference average value while changing each of the re-arranged indices of the reserved tones, and finally determining carrier indices for which the calculated comparison reference average value becomes the smallest value as carrier indices of the reserved tones.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a resource allocation indicating a plurality of transmission tones comprising a subset of data tones of a plurality of data tones and a subset of peak reduction tones (PRTs) of a plurality of PRTs, wherein the resource allocation indicates locations for the plurality of data tones and locations for the plurality of PRTs within a particular bandwidth, wherein the locations for the plurality of PRTs are arranged relative to the locations for the plurality of data tones according to a PRT subsequence of a universal PRT sequence, and wherein the PRT subsequence corresponds to a sub-band of the particular bandwidth; and transmit a data transmission using a waveform based at least in part on the resource allocation. Numerous other aspects are provided.

Abstract: One embodiment is directed to a system that comprises a non-DPD RF transceiver circuit that does not include digital pre-distortion (DPD) functionality and a DPD RF transceiver integrated circuit that includes DPD functionality. A first analog RF transmit signal output by the non-DPD RF transceiver circuit is received by a receive signal path of the DPD RF transceiver integrated circuit so that receive baseband data generated by the receive signal path is indicative of the first analog RF transmit signal. The receive baseband data generated by the DPD RF transceiver integrated circuit is received by a transmit signal path of the DPD RF transceiver integrated circuit. A second analog RF transmit signal output by the transmit signal path is a digitally pre-distorted version of the first analog RF transmit signal for amplification by the power amplifier.

Abstract: A transmitting apparatus, a receiving apparatus corresponding to the transmitting apparatus, and a transmitting-receiving system including: a first A/D converting part that converts an analog audio signal into a digital signal; a compressing part that compresses the converted digital signal; a modulating part that generates a modulated signal by modulating the compressed digital signal; an all-pass filter that reduces a phase distortion included in the modulated signal; and a transmitting part that transmits a phase-distortion-cancelled signal resulting from reducing the phase distortion of the modulated signal with the all-pass filter are provided.

Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th generation (4G) communication system such as long-term evolution (LTE). The present disclosure relates to beam management in a wireless communication system, and an operation method of a base station may comprise the steps of: transmitting first type reference signals; receiving feedback information on the first type reference signals; transmitting information on resources for second type reference signals, which are allocated on the basis of the feedback information, to at least one terminal; and transmitting the second type reference signals through the resources, wherein the second type reference signals are transmitted using fixed transmission beams by the base station. The present research has been conducted with the support of the “cross-departmental giga KOREA project” of the government (the ministry of science and ICT) in 2017 (No.

Abstract: A system for reducing near-end crosstalk (NEXT) includes a first electrical component contributing to a first NEXT pulse of a first polarity and a second electrical component receiving the first NEXT pulse at a first time delay (td). A circuit couples the first electrical component to the second electrical component to create a second NEXT pulse of a second polarity and delays the second NEXT pulse by an amount equal to the first time delay (td). The first and second NEXT pulses are combined to reduce the first NEXT pulse. A method for reducing NEXT includes coupling a first component contributing to a first NEXT pulse of a first polarity and a second component to create a second NEXT pulse of a second polarity, delaying the second NEXT pulse, and combining the second NEXT pulse with the first NEXT pulse to reduce the first NEXT pulse.

Abstract: A first radio node including processing circuitry configured to configure the first radio node to: obtain a first interference subspace, obtain beamforming weights based on the first interference subspace where the beamforming weights configured to modify a radiation pattern in at least one communication direction of at least one interference source, and perform wireless communications based on the beamforming weights.

Abstract: A communication device includes a processing circuit, the processing circuit being configured as: mapping a first information bit part used for a receiving end to a corresponding channel based on a pre-set mapping rule so as to execute spatial modulation with respect to the first information bit part of the receiving end; allocating a transmission power to the receiving end; and controlling the transmission power allocated through a mapped channel to transmit a second information bit part used for the receiving end. In the case of the first information bit parts used for multiple receiving ends being the same, the channels mapped for multiple receiving ends are the same. The multi-user spatial modulation performs spatial modulation for multiple receiving ends at the same time through a multiplexing channel of the transmitting end, improving the additional modulation order and the data transmission rate which can be obtained by each receiving end.

Abstract: A wireless device activates a first uplink bandwidth part (BWP) of a first cell. A beam failure of a second cell is detected. The wireless device switches, based on the first uplink BWP not being configured with one or more beam failure recovery resources for the second cell, from the first uplink BWP to a second uplink BWP, of the first cell, configured with the one or more beam failure recovery resources. An uplink signal indicating the beam failure is transmitted via the second uplink BWP.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may filter a group of uplink reference signals so that filtering delays of the group of uplink reference signals are consistent based at least in part on a filtering constraint for the group of uplink reference signals; and transmit the group of uplink reference signals. Numerous other aspects are provided.

Abstract: This application provides a data transmission method, a network device, and a terminal device. The method includes: generating, by the network device, first information, where a value of a bit included in the first information is used to indicate a demodulation reference symbol (DMRS) port combination in a second set, each DMRS port combination in the second set belongs to a first set, the first set includes a plurality of DMRS port combinations, the DMRS port combination includes at least one DMRS port, and a quantity of DMRS port combinations included in the second set is less than a quantity of DMRS port combinations included in the first set; and sending, by the network device, the first information to the terminal device. According to embodiments of this application, signaling overheads can be reduced.

Abstract: A wireless communications system includes a stochastic pre-distortion actuator configured to receive a carrier-modulated signal and convert the carrier-modulated signal into an output signal. The system includes one or more antennas configured to receive the output signal and transmit the output signal, one or more power amplifiers electrically coupled between the pre-distortion actuator and the one or more antennas and a receiver configured to receive the output signal over-the-air and generate feedback based on the output signal. The pre-distortion actuator is configured to generate the output signal by applying a correction to the carrier-modulated signal that cancels out nonlinearities associated with the one or more antennas and/or the one or more power amplifiers. The pre-distortion actuator is configured based on the feedback.

Abstract: According to the present invention, a transmitting station apparatus includes: a plurality of modulation units that modulates a plurality of streams into which transmission data is divided to generate a plurality of first data signals; a training signal generation unit that generates a known training signal; a linear equalization unit that linearly equalizes the plurality of first data signals using a tap coefficient for removing inter-antenna interference and inter-symbol interference and outputs second data signals on which transmission beam forming and equalization are simultaneously performed; and a plurality of transmitting station communication units that transmit the training signal or the second data signals to a receiving station apparatus and receive the tap coefficient from the receiving station apparatus, and a receiving station apparatus includes: a coefficient estimation unit that estimates a channel impulse response from the training signal and calculates the tap coefficient based on the channe

Abstract: There is provided mechanisms for performing beam management. A method is performed by a radio transceiver device. The method comprises transmitting a reference signal in a transmission beam as part of the beam 5 management. The reference signal in the transmission beam occupies time/frequency resources that extend over a frequency interval. The transmission beam has a frequency-dependent polarization over the frequency interval.

Abstract: An apparatus for a mobile communication device adapted for digital pre-distortion that includes a memory and a processor operatively coupled to the memory of the processor. The processor receives a first input signal and also receives a first output signal from a power amplifier that is based on the first input signal. The processor additionally varies compression applied to a second input signal based on the first output signal of the power amplifier, generates a distortion compensation vector for the second input signal based on the first output signal of the power amplifier, and also varies an input excitation signal supplied to the power amplifier based on the first output signal of the power amplifier.