Abstract: A decision feedback equalizer includes: a feedforward equalizer, a feedback equalizer, a slicer and a decision adjustment unit. The feedforward equalizer is arranged to generate a feedforward output signal based on an input signal. The feedback equalizer is coupled to the feedforward equalizer and arranged to generate a feedback output signal according to a decision output signal. The slicer is coupled to the feedforward equalizer and the feedback equalizer, and is controllable by a decision adjustment parameter, wherein the slicer is arranged to perform a slicer decision on a sum of the feedforward output signal and the feedback output signal, thereby generating the decision output signal. The decision adjustment unit is coupled to the slicer, and is arranged to adjust the decision adjustment parameter according to a sleep state of a communication device in which the decision feedback equalizer is disposed.

Abstract: An example method may include determining a first precoding processing for communication between a beamformer and a beamformee, and transmitting a first sounding signal precoded according to the first precoding processing. The method also includes obtaining first beamforming feedback from the beamformee in response to the first sounding signal, and selecting a second precoding processing for communication between the beamformer and the beamformee. The method also includes obtaining second beamforming feedback from the beamformee based on a second sounding signal from the beamformer preprocessed according to the second precoding processing, and analyzing the first beamforming feedback and the second beamforming feedback.

Abstract: A method and system for providing sub-band whitening are herein provided. According to one embodiment, a method estimating an interference whitening (IW) factor based on a legacy-long training field (LLTF) signal, updating the estimated IW factor during transmission of a data symbol, and scaling the data symbol based on the updated IW factor and the estimated IW factor.

Abstract: A wireless communication method and a wireless communication device. An electronic device for a user equipment in a wireless communication system, including a processing circuit configured to receive, from a base station, channel state information reference signal with a set of reception filters, perform channel estimation on a downlink channel from the base station to the user equipment, select, from the set of reception filters, one or more particular reception filters corresponding to respective channel estimation results that satisfy a first predetermined condition, and signal, from the user equipment to the base station, sounding reference signal with one or more particular transmission filters, wherein the one or more particular transmission filters and one or more particular reception filters are reciprocal respectively.

Abstract: A methods and apparatuses for providing and configuring channel state information (CSI) reports. A method of operating a user equipment includes receiving a channel state information reference signal (CSI-RS) and generating, based on the CSI-RS reception, a first CSI report and a second CSI report. The first CSI report includes a first channel quality indicator (CQI) index from a first set of CQI indexes and the second CSI report includes a second CQI index from a second set of CQI indexes. The method further includes transmitting the first CSI report in a first channel and the second CSI report in a second channel.

Abstract: In one aspect there is provided a process for beam management. In some embodiments, the process includes: a TRP classifying a data session between the TRP and a UE into one of at least two classifications; and the TRP selecting a beam management procedure for managing one or more BPLs between the TRP and the UE based on the classification into which the data session is classified.

Abstract: A receiver includes an equalizer circuit, a radio frequency interference cancellation circuitry, and a channel estimation circuitry. The equalizer circuit is configured to process a first data signal according to a control signal, in order to generate a second data signal. The radio frequency interference cancellation circuitry is configured to detect a radio frequency interference signal according to the second data signal to generate radio frequency interference information, and to output a correction signal according to the radio frequency interference information, in order to correct the second data signal. The channel estimation circuitry configured to analyze a plurality of sets of signal components in the second data signal, and to utilize a power ratio of one of the plurality of sets of signal components to generate the control signal.

Abstract: The present disclosure relates to a communication technique which combines IoT technology with a 5G communication system for supporting a higher data transfer rate than existing 4G systems, and a system thereof. The present disclosure can be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or a connected car, and services related to health care, digital education, retail business, security and safety, etc.) on the basis of 5G communication technology and IoT-related technology.

Abstract: Device, methods and systems for precoding in wireless systems using orthogonal time frequency space multiplexing are described. An exemplary method for transmitting wireless signals includes mapping data to generate a quadrature amplitude modulation (QAM) signal in a delay Doppler domain, determining a perturbation signal to minimize expected interference and noise, perturbing the QAM signal with the perturbation signal, thereby producing a perturbed signal, generating a pre-coded signal by pre-coding, using a linear pre-coder, the perturbed signal, and transmitting the pre-coded signal using an orthogonal time frequency space modulation signal scheme.

Abstract: An electronic device and a communication method. The electronic device comprises: a processing circuit, configured to: determine transmitting signals simultaneously to at least two user devices and proximity of directions of downlink transmission signals for the at least two user devices satisfying a predetermined condition; and acquire, an amount of antenna elements to be activated for downlink beamforming, which is determined based on the directions of downlink transmission signals for the at least two user devices.

Abstract: A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.

Abstract: An aspect of an embodiment provides a method for controlling channel quality monitoring in a wireless communication system that utilises beamforming, whereby a plurality of signals are transmitted from a base station to a user equipment and the quality of a received signal is measured at the user equipment for each of the plurality of signals, each of the plurality of signals being transmitted by the base station utilising a different frequency sub-band and beam pairing. The method includes: identifying plural frequency sub-band and beam pairings for which the received signal quality is correlated; and, for each frequency sub-band and beam pairing within a group of plural frequency sub-band and beam pairings for which the received signal quality is correlated, evaluating the periodicity of a received signal quality analysis process, and determining whether or not to adjust the periodicity.

Abstract: A PAM4 receiver including an adaptive continuous-time linear equalizer and a method for training the same are disclosed. The PAM4 receiver and the method for training the same of the present invention employs a training pattern including a first training data pattern and second training data pattern to adaptively tune the PAM4 receiver to achieve accurate data reception and long-distance, high-speed communication.

Abstract: Facilitating a determination of channel state information for advanced networks (e.g., 4G, 5G, and beyond) is provided herein. Operations of a system can comprise configuring a mobile device with a demodulation reference signal. The operations can also comprise transmitting a channel state information reference signal to the mobile device, wherein the channel state information reference signal configures a number of channel state information reference signal ports. Operations of another system can comprise determining a number of resources for a group of transmission ranks and determining a link quality metric for transmission ranks of the group of transmission ranks. The operations can also comprise selecting a transmission rank and a precoding matrix indicator and transmitting the precoding matrix indicator to a network device.

Abstract: A system of a machine includes a network of nodes distributed throughout the machine. A means is operable to communicate with the network of nodes through one or more electromagnetic signals. A plurality of waveguides is configured to guide transmission of the one or more electromagnetic signals. A radio frequency antenna is coupled to a first waveguide of the plurality of waveguides. A radio frequency transceiver is coupled between the means and the radio frequency antenna. A membrane is configured to support communication between the first waveguide and at least one node of the plurality of nodes.

Abstract: A method for determining and/or adjusting phases of at least two electrical signals is disclosed. The method includes the following steps: a first frequency and/or a first power level for a first signal is set and a second frequency and/or a second power level for a second signal is set. The first signal and the second signal are superposed, thereby obtaining a superposed signal. A power parameter of the superposed signal is determined via a power measurement unit for several different phase offsets of the first signal and/or of the second signal. A relative phase between the first signal and the second signal is determined and/or set based on the determined power parameters. Moreover, a signal generator system is disclosed.

Abstract: Disclosed are a method for transmitting and receiving channel state information (CSI) in a wireless communication system and a device therefor. Particularly, a method by which a terminal reports channel state information in a wireless communication system can comprise the steps of: receiving, from a base station, configuration information relating to the CSI report on a downlink channel; receiving, from the base station, at least one CSI-RS for the CSI report; outputting feedback information by means of the at least one CSI-RS; and reporting the CSI to the base station by using the outputted feedback information.

Abstract: A radio communication system includes a transmitting station, and at least one receiving apparatus.

Abstract: The present application provides a method, a device, a transmitter, and a receiver for detecting syncwords. After inserting syncwords in a data frame to be transmitted, a transmitter transmits the data frame to be transmitted inserted with a preset number of syncwords to a receiver. Because the bit-length of information in the data frame to be transmitted inserted with the preset number of syncwords is a specified multiple of the length of the syncwords, and the symbol components of the preset number of the inserted syncwords are different, or the symbol components are the same but the orders of the symbols are different, the receiver correlates each syncword of the preset number of syncwords with the data frame to be transmitted inserted with the preset number of syncwords after receiving the data frame to be transmitted.

Abstract: A voltage controlled oscillator includes a first inductor; a first variable capacitance unit including a first variable capacitance element having a variable capacitance and a second variable capacitance element having a variable capacitance; a first node configured for application of a first voltage to the first variable capacitance unit; a cross-coupled unit including a first transistor and a second transistor, an output of the first transistor connected to an input of the second transistor; a current source configured to flow a current through the first inductor, the first transistor, and the second transistor; a second variable capacitance unit including a third variable capacitance element having a variable capacitance, and a fourth variable capacitance element having a variable capacitance; and a second node different from the first node configured for application of a second voltage to the second variable capacitance unit.