One general aspect of the present disclosure includes a device configured to operate in a wireless system. The device including: a transceiver configured with a plurality of E-UTRA operating bands; and a processor operably connectable to the transceiver. The processer may be configured to: control the transceiver to transmit an uplink signal via at least two bands among the plurality of E-UTRA operating bands; and control the transceiver to receive a downlink signal via three bands among the plurality of E-UTRA operating bands, wherein pre-configured MSD value is applied to a reference sensitivity for receiving the downlink signal based on the E-UTRA operating band 2.

A portable point-of-sale terminal is provided, including: a communication module configured to search for a network signal of a wireless network base station for communication; a transaction module configured to perform a transaction procedure; a detection module configured to perform a detection procedure for detecting a signal strength and a network channel of the wireless network base station; a processing module configured to: when the transaction module starts the transaction procedure, drive the detection module to perform the detection procedure; and when it is detected that the signal strength meets a default condition, allow the transaction procedure, and generate a prompt signal to be completed; or when it is detected that the signal strength does not meet the default condition, generate a warning signal; and a display module configured to display prompt information or warning information.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a device may receive layout information that identifies a configuration of an antenna array of antennas, wherein the antenna array is to include a plurality of antenna subarrays and a plurality of antenna chips, wherein each antenna chip is communicatively coupled to antennas of an associated antenna subarray; determine, based at least in part on a phase shift characteristic associated with the antennas, a set of phase differences between antenna subarrays; determine, based at least in part on the set of phase differences, a chip position of each antenna chip relative to the associated antenna subarray; and generate, based at least in part on the chip position of each antenna chip, a layout of an antenna package to receive the antenna array and the plurality of antenna chips. Numerous other aspects are provided.

This document describes systems and techniques to perform simulation model fitting for radio frequency (RF) matching-network optimization. Using a simulation tool, a simulation model of the RF interface circuitry is generated with matching component values. Port impedances of the simulation model are adjusted to match at least one or more simulated scattering parameters to at least one or more actual scattering parameter of a physical prototype of the RF interface circuitry assembled with the same matching component values. An optimal load-pull location for the RF interface circuitry is also determined. The simulation model is then used to identify a matching pair that corresponds to the optimal load-pull location. In this way, the described systems and techniques can reduce engineering time and improve the accuracy of the tuning process.

A synthetic reception strength value in a case of synthesizing indirect waves of radio waves generated due to an obstruction is calculated for each piece of receive antenna coordinate information in consideration of a phase of each indirect wave. Relation information indicating relation between input information and teaching information is generated. The input information is the synthetic reception strength value for each piece of the receive antenna coordinate information corresponding to transmit antenna coordinate information. The teaching information is information indicating a reception state of the radio waves being calculated using a method of actually measuring the radio waves output by the transmit antenna at a position of a receive antenna or a method other than the method of the actual measurement. Strength of the radio waves is estimated by calculating the information indicating the reception state of the radio waves by using the transmit antenna coordinate information for evaluation and the generated relation information.

One or more processors control processing of radio frequency (RF) signals using a machine-learning network. The one or more processors receive as input, to a radio communications apparatus, a first representation of an RF signal, which is processed using one or more radio stages, providing a second representation of the RF signal. Observations about, and metrics of, the second representation of the RF signal are obtained. Past observations and metrics are accessed from storage. Using the observations, metrics and past observations and metrics, parameters of a machine-learning network, which implements policies to process RF signals, are adjusted by controlling the radio stages. In response to the adjustments, actions performed by one or more controllers of the radio stages are updated. A representation of a subsequent input RF signal is processed using the radio stages that are controlled based on actions including the updated one or more actions.

A method and method to detect vegetation growth into a wireless signal path. Signal strength indicators for a signal that is transmitted from a transmitter at a second location are received from a receiver at a first location. The signal strength indicators are determined to be consistent with a progression of a decrease in received signal strength corresponding to a growth of vegetation growing into a wireless signal path between the first location and the second location. A recent signal strength indicator is determined to be below a threshold from a baseline received signal strength, and a notification of likely vegetation encroachment into the wireless signal path is provided based on the recent signal strength indicator being below the threshold and determining that the signal strength indicators are consistent with a progression of a decrease in signal strength corresponding to a growth of vegetation.

A beamformer for providing signals from a device under test (DUT) and an emulator is disclosed. The beamformer includes: a radio frequency (RF) interface configured to receive a plurality of radio beams and convert a data stream comprising a plurality of radio beams from analog signals to digital signals; a radio samples processor configured to receive the digital signals, decouple data samples from the plurality of radio beams, and recombine the data samples to provide a single data stream to a corresponding single device used by an end-user; and a local processor adapted to dynamically adjust operational parameters in the radio samples processor of the single data stream.

The present invention discloses a simulation system and testing method of AIS signals for airborne receiver. The simulation system comprises: multiple AIS receivers for receiving AIS signals of vessels, each AIS receiver being respectively connected to a timing unit, and the multiple AIS receivers being connected to a centralized processor by means of a communication network; the centralized processor for combining data of the multiple AIS receivers, deleting redundant data, and forming an AIS database; a flight simulator for manipulating an altitude and direction of an aircraft, and simulating a flight path of a real aircraft; and an AIS signal generator for incorporating the AIS database according to an aircraft position and time point sent from the flight simulator, calculating all AIS signals received by the aircraft at the time point, and sending the AIS signals to an RF signal generator to generate VHF RF signals. The present invention resolves the issue of large differences between existing airborne AIS simulation tests and actual application scenarios, and is applicable to the development of a airborne AIS signal simulation and a testing apparatus.

Aspects of the disclosure include determining that a first instance of a first object is present in a first image in accordance with an execution of a first image processing algorithm, generating a first bounding region that at least partially surrounds the first instance of the first object in the first image, determining that the first instance of the first object in the first image has a first attribute in accordance with an execution of a second image processing algorithm, wherein the second image processing algorithm is operative on the first image in accordance with the first bounding region, and selecting the first instance of the first object and/or a second instance of the first object to receive a deployment of a network resource in accordance with the determining that the first instance of the first object in the first image has the first attribute. Other aspects are disclosed.