A preprocessing arrangement is configured for installation in a multiple-antenna communication system, e.g. a MI-MO-enabled device, to improve internal data transfer of the system. The arrangement is interposed between an antenna array and a computer device. In operation, the arrangement obtains (301) a diagonal matrix W of multiplicator values, the diagonal matrix W being given by H=WAX, wherein H is a channel transmission matrix for the system, A is a predefined filter matrix, and X is a matrix that depends on H. The arrangement further extracts (302) an input vector Y of signal values from the antenna array, generates (303) an output vector Ŷ of output values by forming A.sup.HW.sup.HY, wherein superscript indicates Hermitian transpose, and provides the output values in the output vector Ŷ to the computer device. By providing the output vector Ŷ, the number of signal values to be received and jointly processed by the computer device is reduced relative to the number of antennas in the antenna array.

A receiving device and signal processing method, the method including monitoring quality parameters of N received signals in real time, wherein the N received signals are obtained by N receive antennas from a same transmit antenna, predicting, according to the quality parameters, whether quality of a first combined signal that is obtained after combination processing is performed on the N received signals is superior to quality of a received signal whose quality is optimal in the N received signals, determining the first combined signal as a to-be-processed signal in response to predicting that the quality of the first combined signal is superior to the quality of the received signal, and determining a to-be-processed signal according to M received signals of the N received signals in response to predicting that the quality of the first combined signal is inferior to the quality of the received signal.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may indicate, to a base station, a capability of the UE to use a channel measurement resource for both a joint transmission hypothesis and a single transmission hypothesis. The UE may receive, based on indicating the capability of the UE, a configuration message indicating a first channel measurement resource that is associated with a first transmission configuration indicator state and that is configured for a first joint transmission hypothesis. The UE may obtain a channel measurement for both the first joint transmission hypothesis and a first single transmission hypothesis using the first channel measurement resource based on the configuration message.

Methods and apparatus for providing an adaptive beamforming antenna for OFDM-based communication systems. In one embodiment, a method includes forming a matrix (A) of cyclic prefix values and a matrix (B) of tail values from an orthogonal frequency division multiplexed (OFDM) symbol, and forming a summation matrix (S) and a difference matrix (D) from the matrix A and the matrix B. The method also includes multiplying a beamformer preset matrix (W) with the matrix S and the matrix D to determine a matrix (P) and a matrix (Q), and determining a beam identifier from the P and Q matrices.

A precoding process is performed on a first baseband signal and a second baseband signal to generate a first precoding signal and a second precoding signal. A pilot signal is inserted into the first precoding signal and phase change is performed on the second precoding signal. A pilot signal is inserted into the phase changed second precoding signal, and phase change is further performed on the phase-changed second precoding signal with the pilot signal inserted.

The present disclosure provides a method and device in User Equipment (UE) and a base station for dynamic scheduling. The UE first receives first information; and then receives second information; and operates a first radio signal. Wherein the first information comprises Q field(s), a first field is used to determine a first antenna port set, the first field is one field of the Q field(s). The first antenna port set comprises a positive integer of antenna port(s), the second information is transmitted by an antenna port within the first antenna port set. The first information and the second information are both dynamically configured. The operating refers to receiving, or the operating refers to transmitting. The second information is used to determine scheduling information of the first radio signal. The present disclosure ensures the robustness of scheduling signaling reception in multi-antenna scenarios, and also avoids excessive overhead, hence improving transmission efficiency.

Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.

In an aspect, a network device (e.g., BS, core network component, etc.) determines a self-interference measurement (SIM) configuration associated with null-forming at a wireless device (e.g., UE or BS), the null-forming associated with steering at least one receive beam of the wireless device and/or at least one transmit beam of the wireless device away from one or more external sources of self-interference. The network device transmits the SIM configuration to the wireless device. The wireless device performs at least one null-forming procedure in accordance with the SIM configuration.

Apparatus and methods for multi-antenna communications are provided. In certain embodiments, a communication system includes an antenna array including a plurality of antenna elements, and a plurality of RF circuit channels each coupled to a corresponding one of the antenna elements. The plurality of RF circuit channels generate two or more analog baseband signals in response to the antenna array receiving a radio wave. The communication system further includes a controllable amplification and combining circuit that generates two or more amplified analog baseband signals based on amplifying each of the two or more analog baseband signals with a separately controllable gain, and that combines the two or more amplified analog baseband signals to generate a combined analog baseband signal.

Disclosed are a method and an apparatus for wireless communication to and from a vehicle in an autonomous driving system. A method for wireless communication to and from a vehicle in an autonomous driving system according to an embodiment of the present disclosure includes receiving data on a communication environment map that includes position-dependent beam information, from a server and determining a direction of transmitted or received beam based on a driving path for the vehicle and the communication environment map; and performing data communication using the direction of transmitted or received beam. With this method, the time taken for beam selection can be reduced, and path loss can be reduced. An autonomous vehicle according to the present disclosure operates in cooperation with an artificial intelligence module, an unmanned aerial vehicle (UAV), a robot, an augmented reality (AR) device, a virtual reality (VR) device, a device relating to 5G, and the like.