Methods, systems, and devices for wireless communications are described. A wireless communications system may support techniques for channel state information (CSI) based artificial noise injection. In some cases, a base station may receive an indication of CSI associated with a channel for communications with the UE. The base station may apply artificial noise signals, based on the CSI, to a set of first signals associated with control channel transmissions to obtain a set of second signals. The UE may receive the set of second signals and apply pseudo-noise signals, based on the CSI, to the set of second signals to remove or reduce the artificial noise. The UE may combine the set of second signals adjusted by applying the pseudo-noise signals to obtain a combined signal. The UE may decode the combined signal to obtain control information.

A technique capable of realizing improvement of utilization efficiency of resources such as frequency with respect to MIMO, beam forming, and the like is provided. A transmission/reception method according to an embodiment is a transmission/reception method of transmitting and receiving data between a transmission device 1 with a plurality of transmitting antennas and a reception device 2 with a receiving antenna, and includes: a generating step of generating, by the transmission device 1 or the reception device 2, characteristics of a plurality of pseudo propagation channels on a basis of characteristics of a plurality of actual propagation channels between the plurality of transmitting antennas and the receiving antenna, the characteristics of the plurality of pseudo propagation channels being characteristics similar to frequency characteristics to an extent that the frequency characteristic can be approximated with respect to the characteristics of the plurality of actual propagation channels; a transmitting step of creating, by the transmission device 1, one or more data to be transmitted by reflecting the characteristics of the plurality of pseudo propagation channels to a plurality of parallel and independent data, and transmitting the one or more data from the plurality of transmitting antennas as radio waves; and a receiving step of extracting, by the reception device 2, the plurality of parallel and independent data from one or more received data received as the radio waves by the receiving antenna on a basis of the characteristics of the plurality of pseudo propagation channels.

A test system comprises a radio frequency (RF) shielded container, the shielded container to house a UWB receiver device under test; an RF antenna arranged within the RF shielded container; and a UWB transmitter device operatively coupled to the RF antenna. The UWB transmitter device is configured to transmit a UWB signal within the RF shielded container using the antenna, wherein the transmitted UWB signal is representative of multi-path components (MPCs) of resulting signals in an end-use environment of the UWB receiver device resulting from transmitting a UWB ranging signal in the end-use environment.

The present disclosure relates to a device for use in a wireless network, the device including: a processor configured to: provide input data to a trained machine learning model, the input data representative of a network environment of the wireless network, wherein the trained machine learning model is configured to provide, based on the input data, output data representative of an expected performance of a plurality of configurations of network components with respect to power consumption and performance of the wireless network; select a configuration of a network component from the plurality of configurations based on the output data of the trained machine learning model; and instruct an operation of the network component according to the selected configuration; and a memory coupled with the processor, the memory storing the input data provided to the trained machine learning model and/or the output data from the trained machine learning model.

A method of wireless communication by a first user equipment (UE) includes requesting multi-static channel sensing estimates from a device to establish a communications link with a second UE, and receiving the multi-static channel sensing estimates from the device. The method further includes setting communication parameters based on the multi-static channel sensing estimates. The method still further includes communicating with the second UE over the communications link based on the communication parameters.

A method for determining a reliability of a wireless device to estimate its location under a simulated environmental condition includes simulating an environmental condition inside a test chamber by controlling a physical parameter. The test chamber contains the wireless user device configured to estimate a location of the wireless user device based on reference signals received from a signal source. The method includes communicating a pattern of reference signals having varying signal propagation characteristics in the test chamber. The method includes receiving an indication of an estimated location calculated by the wireless user device based on the pattern of reference signals. The reliability of the wireless device to estimate its location under the simulated environmental condition is determined based on a comparison of the estimated location with the simulated location.

The present invention relates to a method for predicting indoor three-dimensional space signal field strength by an outdoor-to-indoor propagation model, which comprises the steps of: establishing a three-dimensional space scene model from a transmitting base station to a target building; predicting space field strength of an outer envelope of the target building according to an extended COST-231-Walfisch-Ikegami propagation model; generating, on the outer envelope of the target building, a series of out-door-to-indoor virtual rays in accordance with a certain resolution; simulating a propagation procedure of the virtual rays using a ray tracing propagation model algorithm, to predict three-dimensional space signal field strength in the target building. In the present invention, an extended COST231-Walfisch-Ikegami propagation model is adopted for the transmitting base station and the outdoor region of the target building, while a ray tracing propagation model algorithm is adopted for the indoor region of the target building, which effectively combines an outdoor empirical propagation model and an indoor deterministic propagation model, so that a good equilibrium is achieved between calculation efficiency and calculation accuracy, and the algorithm has a strong engineering applicability.

During operation, an electronic device may perform measurements associated with an environment. Then, the electronic device may create a model that represents the environment, where the model specifies a two-dimensional (2D) or a three-dimensional (3D) geometric layout of the environment and/or estimated parameters associated with radio-frequency properties of at least a portion of the environment. Moreover, the electronic device may design a wireless network for use in the environment, where the designing includes determining radio-frequency characteristics in a band of frequencies associated with the wireless network based at least in part on the model, and the wireless network is predicted to achieve one or more target communication-performance metrics. Next, the electronic device may provide the design information associated with the design that specifies the wireless network, where the design information includes one or more wireless-network components and one or more locations of the wireless-network components in the environment.

Techniques are provided for accurately determining actual and prospective location(s) of radio(s) located in a structure and controlled by a shared spectrum system. By more accurately knowing the location(s) of the radios, the shared spectrum system can more efficiently allocate maximum transmission power(s) to the radio(s), enhance corresponding radio coverage area(s), and/or diminish interference to other radio(s) and/or primary user(s).

A method of controlling power in a transmission system may include determining a first transmit power of a first transmit path, determining a second transmit power of a second transmit path, and controlling the first transmit path and the second transmit path based on a combination of the first transmit power and the second transmit power. The combination of the first transmit power and the second transmit power may include a sum of the first transmit power and the second transmit power. Controlling the first transmit path and the second transmit path may include determining a first effective power target for the first transmit path based on the first transmit power and the second transmit power, and determining a second effective power target for the second transmit path based on the first transmit power and the second transmit power.