The present disclosure relates to an electronic device, a wireless communication method, and a computer-readable medium. According to one embodiment, provided is an electronic device comprising a processing circuit and used for a user equipment side; the processing circuit is configured to control to transmit a non-precoded first uplink reference signal, receive feedback by a base station regarding the first uplink reference signal, and sending, on the basis of said feedback, a pre-coded second uplink reference signal.

The disclosure relates to a 5G or 6G communication system for supporting upper data rates. Provided are a beam control method performed by a terminal in a wireless communication system. The method includes receiving, from a base station, configuration information including a time interval and transmission configuration information (TCI) state information corresponding to the time interval; and performing beam control, based on the TCI state information during the time interval.

Methods and systems for detecting and mitigating the effects of time of flight interference of a radio frequency (RF) signal are provided. A wireless communication network may determine, based on one or more parameters being sufficiently different than a baseline value, that time of flight interference is occurring based on the undesirable propagation of a first cell's downlink signals into a second cell's coverage area. In response to the determination, the network may identify an offending base station and modify the RF transmission characteristics of the offending base station to prevent or mitigate the impact of the interference event on the RF signal's propagation.

In the present invention, disclosed is a method for a base station transmitting a downlink control channel to user equipment in a wireless communication system. More specifically, the method comprises the steps of configuring resource elements, which are included in each of a plurality of resource blocks, as a plurality of resource element groups comprising a predetermined number of resource elements; allocating antenna ports to the resource elements which are included in each of the plurality of resource element groups; allocating as a transmission resource for the downlink control channel, at least one resource element group from each of the plurality of resource blocks; and transmitting the downlink control channel to the user equipment by using the transmission resource.

Antenna systems and methods for Massive Multi-Input-Multi-Output (MIMO) (M-MIMO) communication are provided. Antennas systems include a M-MIMO transmitter architecture with a hybrid matrix structure. The hybrid matrix structure protects against transmit path component failures and ensures that a spatial rate of the M-MIMO transmitter is not degraded by the failures. Antenna systems and methods also include antenna selection schemes for selecting a subset of antennas from a plurality of antennas to transmit to a receiver.

A broadcast receiving apparatus includes: a plurality of unit antennas arranged at preset intervals, each unit antenna of the plurality of antennas being configured to receive a broadcast signal; a plurality of receiving modules, each receiving module of the plurality of receiving modules being configured to convert the broadcast signal received by a corresponding unit antenna of the plurality of unit antennas into a first signal and output the first signal; a filter configured to filter a noise component out of the first signals output by the plurality of receiving modules, synthesize the first signals into a second signal and output the second signal; and a signal processor configured to perform a signal process for displaying an image based on the second signal output from the filter.

The method is for channel estimation with transmitter (Tx) and receiver (Rx) beam training in an OFDMA HBF system wherein the transmitter and receiver communicate over a channel and each include a plurality of Radio Frequency (RF) chains and an antenna array of antenna elements corresponding to each RF chain, and wherein the transmitter includes an analog beamformer and the receiver includes an analog combiner. The method includes generating a set of orthogonal Tx training beams for the transmitter based upon a number of antenna elements in the transmitter antenna array, and generating a set of orthogonal Rx training beams for the receiver based upon a number of antenna elements in the receiver antenna array. The method includes probing the channel by simultaneously transmitting OFDMA preambles with each RF chain using a different one of the orthogonal Tx training beams and receiving the OFDMA preambles with each of the orthogonal Rx training beams in a scheduling sequence that includes a pairing of each orthogonal Tx training beam with each orthogonal Rx training beam, and performing channel estimation based upon probing feedback results including a channel response between different pairs of the orthogonal Tx training beams and the orthogonal Rx training beams.

A wireless communications system provides coordinated multi point transmission over a channel of a wireless transmission medium. The system includes a central controller having a processor and a memory, a first cell region having a first communications node disposed therein, and a plurality of neighboring cell regions disposed about the first cell region. Each of the plurality of neighboring cell regions includes a second communications node disposed therein. The system includes a plurality of user equipment devices disposed within an overlapping region of the first cell region and one of the neighboring cell regions. The central controller is configured to assign the first communications node to be an anchor transmission point of a coordinated set of transmission points. The anchor transmission point is configured to perform carrier sensing on the channel. The coordinated set of transmission points includes the first communications node and at least one second communications node.

A wireless communications system provides coordinated multi point transmission over a channel of a wireless transmission medium. The system includes a central controller having a processor and a memory, a first cell region having a first communications node disposed therein, and a plurality of neighboring cell regions disposed about the first cell region. Each of the plurality of neighboring cell regions includes a second communications node disposed therein. The system includes a plurality of user equipment devices disposed within an overlapping region of the first cell region and one of the neighboring cell regions. The central controller is configured to assign the first communications node to be an anchor transmission point of a coordinated set of transmission points. The anchor transmission point is configured to perform carrier sensing on the channel. The coordinated set of transmission points includes the first communications node and at least one second communications node.

An operating method of a communication device for providing a beamformed transmission signal to a plurality of terminals may include determining a target transmission vector based on an area restriction condition for each of the plurality of terminals, generating a beam selection matrix for selecting some of a plurality of antennas based on the target transmission vector and a beam selection condition, generating a precoding matrix based on the target transmission vector and the beam selection matrix, and generating a transmission signal based on the beam selection matrix and the precoding matrix.