Abstract: A method for detecting and attenuating the impact of interference in a signal of a radio receiver with multiple tuners. The method includes providing a first input signal RF1 to a first tuner T1; simultaneously providing a second input signal RF2 to a second tuner T2; simultaneously producing a first intermediate high injection signal IFH1, by the first tuner T1, using the first input signal RF1 filtered on a first frequency fE, and a first intermediate low injection signal IFB2, by the second tuner T2, using the second input signal RF2 filtered on the first frequency fE; comparing the first intermediate high injection signal IFH1 and the first intermediate low injection signal IFB2; selecting one out of the first intermediate high injection signal IFH1 and the first intermediate low injection signal IFB2 to be decoded by the radio receiver.

Abstract: A method and apparatus for performing beam failure recovery in a wireless communication system are disclosed. A method for performing beam failure recovery by a user equipment according to embodiment of the present disclosure may include transmitting, to a base station, capability information including a maximum number of BFD-RSs per a BFD-RS set supported by the UE and receiving, from the base station, configuration information including information related to at least one BFD-RS set, and each of the at least one BFD-RS set may include the maximum number of BFD-RSs or less.

Abstract: An apparatus for decoding a sequence of pictures from a data stream is configured for decoding a picture of the sequence by: deriving a residual transform signal of the picture from the data stream; combining the residual transform signal with a buffered transform signal of a previous picture of the sequence so as to obtain a transform signal of the picture, the transform signal representing the picture in spectral components; and subjecting the transform signal to a spectral-to-spatial transformation, wherein the buffered transform signal comprises a selection out of spectral components representing the previous picture.

Abstract: Mechanisms for beam management. An example method, in a network node, comprises transmitting a reference signal so as to enable each of the terminal devices participating in a first part of the beam management procedure to identify in which of a first set of beams the reference signal is received with highest power. The method comprises transmitting the reference signal in a second part of the procedure so as to enable each of the terminal devices to identify in which of a second set of beams the reference signal is received with highest power. The method comprises transmitting the reference signal during a third part of the procedure so as to enable each of the terminal devices to identify in which of a third set of beams the reference signal is received with highest power. There is one third set for each beam in the first set.

Abstract: A method for operating a user equipment (UE) comprises receiving, from a base station (BS), CSI feedback configuration information; determining, based on the CSI feedback configuration information, CSI feedback including, for each layer l of a total number of ? layers, an indicator i1,8,l indicating an index of a strongest coefficient among KNZ,l coefficients, wherein l?{1, . . . , ?} is a layer index, ??1 is a rank value, and KNZ,l is a number of non-zero coefficients for layer l; determining a payload of the indicator i1,8,l for each layer l based on the rank value; and transmitting, to the BS, over an uplink (UL) channel, the CSI feedback including the indicator i1,8,l for each layer l of the total number of ? layers.

Abstract: In a phase locked loop composed of digital circuits, the circuit scale of a circuit that generates phase difference information is reduced. A multi-phase clock generation circuit generates a plurality of feedback clock signals having different phases. A feedback side frequency divider divides frequencies of the plurality of feedback clock signals and outputs the feedback clock signals as frequency-divided clock signals. A reference clock latch circuit holds the frequency-divided clock signals in synchronization with a reference clock signal and outputs a held value. A control circuit controls the frequencies of the plurality of feedback clock signals on the basis of the held value.

Abstract: Presented herein are system and methods for implementing a flight plan initiated beam/null forming antenna. According to an aspect, a terrestrial (i.e., ground) to air communications network can include a beam/null steering antenna that can be configured to operate in conjunction with a spectrum management system to provide one or more communications links between an airborne radio and a ground-based operator. The beam/null steering antenna can also receive the flight plans of aircraft using the system from the spectrum management system. In one or more examples, the beam/null steering antenna can use the flight plan information provided the spectrum management system to determine if a signal received at the antenna is a known desired signal, a known undesired signal, or an unknown undesired signal. In one or more examples the antenna can be configured to direct a beam or null at a particular signal based on the determination.

Abstract: An apparatus in a wireless communication system is configured to perform a method for directional beam nulling of SRS-based data beams. A base station (BS) includes a transceiver and a processor. The processor is configured to transmit a data beam to at least one user equipment (UE). The processor is also configured to configure the data beam to have a null area in a direction of a satellite earth station (ES), the null area defining a space within a coverage area of the data beam in which a signal from the data beam is suppressed. The data beam is configured by: generating one or more steering vectors to the ES; obtaining a UE channel matrix via a sounding reference signal (SRS) and determining a rank value; and generating a beamforming precoder configured to directional null the data beam in the direction of the ES.

Abstract: A method, network node and wireless device for phase error compensation for Fifth Generation downlink systems with four correlated uncalibrated antennas are provided. A method includes applying N incremented phase rotations to one of the four antennas to produce N channel state information reference signal resources, N being an integer greater than 1. The method also includes transmitting N CSI-RS on 4 CSI-RS ports to a wireless device, WD, each of the N CSI-RS resources being transmitted with a different one of the incremented phase rotations. The method further includes receiving from the WD a CSI-RS resource indication that indicates a particular one of the N CSI-RS resources. The method also includes applying, in subsequent transmissions to the WD, a phase rotation to the one of the four antennas, the phase rotation corresponding to the indicated CSI-RS resource.

Abstract: A receiving device includes a reception unit that samples a sample signal from a DUT 2; an FFT processing unit 21 that performs an FFT process by multiplying the sample signal by a window function; an FFT length setting unit 34 that, when the signal length of the signal to be measured is shorter than the first FFT length conforming to the communication standard, instead of the first FFT length, sets a second FFT length shorter than the signal length of the signal to be measured, as an FFT length of the FFT process; and a window function setting unit 35 that, when the signal length of the signal to be measured is shorter than the first FFT length, instead of a first window function, sets an asymmetric second window function having a peak separated from a center of a window section, as the window function.

Abstract: Systems and methods for detecting, monitoring, and mitigating the presence of a drone are provided herein. In one aspect, a system for detecting presence of a one or more drones includes a radio-frequency (RF) receiver configured to receive an RF signal transmitted between a drone and a controller. The system can further include a processor and a computer-readable memory in communication with the processor and having stored thereon computer-executable instructions to cause the at least one processor to receive a set of samples from the RF receiver for a time interval, the set of samples comprising samples of the first RF signal, obtain a parameter model of the first frequency hopping parameters, and fit the parameter model to the set of samples.

Abstract: Described are embodiments for uplink transmission using multiple panels. In an embodiment, a wireless device receives configuration parameters indicating a transmission configuration indication (TCI) state index is associated with: a first TCI state, of a first antenna panel, for uplink transmissions; and a second TCI state, of a second antenna panel, for uplink transmissions. The wireless device receives a command indicating the TCI state index and determines, based on the configuration parameters, the first TCI state and the second TCI state associated with the TCI state index indicated in the command. The wireless device transmits, via the first antenna panel, one or more first transport blocks based on the first TCI state. The wireless transmits, via the second antenna panel, one or more second transport blocks based on the second TCI state.

Abstract: A beam search method using an active phased array antenna, in which the beam search method uses a single tile-type phased array antenna including a plurality of radiating elements arranged in a matrix form, and the phased array antenna includes a plurality of sub-arrays including the plurality of radiating elements and arranged in one direction, includes: calculating a beam coefficient application vector for each of the sub-arrays by using a received signal for each of the sub-arrays and a beam coefficient for each of the sub-arrays; determining, as an initial value, a beam coefficient of an effective sub-array corresponding to a maximum value from among absolute values of beam coefficient application vectors for each of the sub-arrays; and performing a monopulse algorithm based on the initial value, to obtain an extended beamwidth greater than a reference beamwidth, which is a range of a beam detected by the phased array antenna.

Abstract: Methods and apparatuses for direct sequence detection can receive an input signal over a communication channel. Next, the input signal can be sampled based on a clock signal to obtain a sampled voltage. A set of reference voltages can be generated based on a main cursor, a set of pre-cursors, and a set of post-cursors associated with the communication channel. Each generated reference voltage in the set of reference voltages can correspond to a particular sequence of symbols. A sequence corresponding to the sampled voltage can be selected based on comparing the sampled voltage with the set of reference voltages.

Abstract: Apparatuses, methods, and systems are disclosed for supporting JED model selection and training. One apparatus includes a processor and a transceiver that receives a configuration from a network device, said configuration indicating at least one of: a set of resources for model training, a type of intended model training, and combinations thereof. The processor selects a Joint Channel Equalization and Decoding (“JED”) model from a set of models based on the received configuration. The processor trains the selected JED model using the received configuration.

Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI, and a second report coding CQI, PMI1 and PMI2. The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling.

Abstract: Provided is an antenna placement method in a system for detecting an object in a detection area between at least one set of a transmission station and a reception station by a wireless signal.

Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.

Abstract: A first communication device that simultaneously transmits to a group of two or more second communication devices using multi-user multiple input multiple output (MU-MIMO) communication performs beamforming training with a selected second communication device of said group of second communication devices by transmitting one or more training units, wherein an analog beamforming training matrix and/or a digital beamforming training matrix adapted for beamforming training with the selected second communication device are applied on the one or more training units, receiving from the selected second communication device feedback in response to the transmitted transmit packets, and determining, for use in the simultaneous transmission of data to a group of two or more second communication devices including the selected second communication device, an updated analog beamforming matrix and/or an updated digital beamforming matrix based at least on the received feedback.

Abstract: A receiver comprising: a processing module configured to: receive a first portion of a packet of received signalling from a first antenna; receive a carrier estimate signal; adjust the first portion based on the carrier estimate signal and correlate the signal with an expected code sequence to provide a first correlated signal; a tracking module configured to: receive the first correlated signal and update the carrier estimate signal, wherein the processing module is further configured to: receive a second portion of the packet from a second antenna; adjust the second portion based on the carrier estimate signal and correlate the signal to provide a second correlated signal, and wherein the receive path further comprises a phase calculation module configured to: receive the first and second correlated signals and determine a respective first and second carrier phase and an angle of arrival of the received signalling.