Abstract: A cross-shaped antenna array comprises a first linear array of first radiation elements, a second linear array of second radiation elements, wherein said second linear array is arranged substantially perpendicular to said first linear array, a common radiation element arranged at the intersection of said first linear array and said second linear array, and a feed port at each end of said first and second linear arrays for reception of a feed signal.

Abstract: A portable antenna control device includes: a main controller for generating a control signal for adjusting a device provided in an antenna; a modem unit for converting the control signal generated by the main controller into an on-off keying (OOK) signal; a power management unit for supplying direct current power; and an OOK port for synthesizing and outputting the OOK signal converted by the modem unit and the direct current power supplied by the power management unit.

Abstract: The present disclosure discloses a phase-shift unit, an antenna array, a display panel and a display device. In one embodiment, the phase-shift unit includes a first substrate and a second substrate assembled to each other; a liquid crystal layer between the first substrate and the second substrate; a microstrip line provided at a side of the second substrate facing towards the liquid crystal layer, and configured for receiving a voltage signal that controls deflection of liquid crystal molecules in the liquid crystal layer and for receiving or transmitting an electromagnetic wave signal; and a grounding layer provided on the first substrate and including a via hole corresponding to the microstrip line.

Abstract: Methods and systems for spatial filtering transmitters and receivers capable of simultaneous communication with one or more receivers and transmitters, respectively, the receivers capable of outputting source directions to humans or devices. The methods and systems use spherical wave field partial wave expansion (PWE) models for transmitted and received fields at antennas and for waves generated by contributing sources. The source PWE models have expansion coefficients expressed as functions of directional coordinates of the sources. For spatial filtering receivers a processor uses the output signals from at least one sensor outputting signals consistent with Nyquist criteria representative of the wave field and the source PWE model to determines directional coordinates of sources (wherein the number of floating point operations are reduced) and outputs the directional coordinates and communications to a reporter configured for reporting information to humans.

Abstract: A direction finding (DF) system and technique using a switched network architecture to couple a first plurality of antenna elements to a second, fewer, plurality of channels of an RF receiver. The RF receiver provides signals to a DF processor which combines data sampled at phase centers of the plurality of array elements. Such combined data samples may be used to estimate a direction of a received signal. The antenna elements may be configured into subarrays and a switch network couples different groups of subarrays to the RF receiver channels during different dwell times. Data collected during each dwell may be used to generate a spatial sample covariance matrix (SCM) and multiple spatial SCMs may be combined to provide aggregate covariance matrix values. A DF processor uses values from the aggregate covariance matrix to provide an output signal indicative of the direction of a received signal.

Abstract: A phase shifter assembly includes first and second phase shifters that respectively include a wiper printed circuit board and a rotatable wiper support, where the wiper printed circuit board and the wiper support are coupled in motion. The phase shifter assembly further comprises: a U-shaped bracket having first and second arms, where the first phase shifter is held on the first arm, and the second phase shifter is held on the second arm; and a rack that is linearly movably supported and is drivable to move linearly; wherein the slide holders has a tooth portion respectively, and the tooth portions are engaged with the common rack. By means of linear movement of the rack, the slide holders can be rotated respectively, and thus the slides are movable within a predetermined range respectively so as to implement phase shifts.

Abstract: A wireless power transmitting device is provided. The wireless power transmitting device includes a patch antenna, and a transmission/reception processing circuit configured to output a first signal to the patch antenna during a first period, and process a second signal output from the patch antenna during a second period, wherein the patch antenna is configured to transmit a transmission wave using the first signal, and output the second signal to the transmission/reception processing circuit using a reception wave.

Abstract: Antenna structures for spatial power-combining devices are disclosed. A spatial power-combining device includes a plurality of amplifier assemblies, and each amplifier assembly includes an amplifier coupled between an input antenna and an output antenna. At least one of the input antenna or the output antenna comprises a nonlinear shape that is configured to propagate a signal along a nonlinear path to or from the amplifier with reduced signal loss. Accordingly, each amplifier may be configured on a corresponding amplifier assembly in a position such that each amplifier is spaced farther apart from other amplifiers in the spatial power-combining device. In this manner, heat generated by the amplifiers may be more evenly dissipated by the spatial power-combining device.

Abstract: The present disclosure relates to an electronic device and communication method. The electronic device comprising a RF link unit radiating a data stream in form of electromagnetic wave radiation onto a phase shifter; a processing circuitry configured to determine an analog precoding matrix; phase shifters, each of which for performing analog precoding on the received signal of the electromagnetic wave radiation according to the determined analog precoding matrix, and an antenna array, each of antenna elements of which transmits the analog precoded signal, wherein the number of the phase shifters is the same as the number of the antenna elements of the antenna array, and the phase shifters and the antenna elements are in one-to-one correspondence.

Abstract: Broadband slot-coupled stacked patch antenna elements are capable of continuous broadband operation between 1.71 GHz and 2.69 GHz. The broadband slot-coupled stacked patch antenna element includes a mid-band radiating patch, a high-band radiating patch, and a low-band resonator with coupling slots capable of resonating at low, mid, and high band frequencies. Additionally, a low-profile probe-fed patch element is provided for pattern enhancement of antenna arrays at high-band frequencies. This low-profile patch element features fan-shaped probes that have three degrees of tune-ability, namely a length, a width, and a spreading angle. Further aspects include 3-column and 4-column offset arrays of the broadband patch radiators and an interleaved array of the low-profile high-band patch radiators and the broadband radiating elements. A new type of azimuth beam forming network (ABFN) is also introduced for the beam forming of the 3-column and 4-column dual-beam arrays.

Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for transmission beamforming. A multiphase beam steering transmitter may include a transmitter array of multiple transmitters. A transmitter may include a multiphase logic decoder that directly controls a power amplifier to perform a vector addition of a beam phase and amplitude. A transmitter of the array may include a multiphase clock generator that outputs basis phases with embedded phase modulation data which are output to the multiphase logic decoder. The multiphase clock generator may receive a modulated clock signal. The PA may be a multiphase switched capacitor power amplifier. The multiphase logic decoder may output two phases adjacent to a desired phase as inputs to clocks of the SCPA. The multiphase logic decoder may further output a control signal that determines which cells in the SCPA are activated and when.

Abstract: Techniques and apparatuses are described that enable digital beamforming for radar sensing using a wireless communication chipset. A controller initializes or causes the wireless communication chipset to use multiple receiver chains to receive a radar signal that is reflected by a target. A digital beamformer obtains baseband data from the wireless communication chipset and generates a spatial response, which may be used to determine an angular position of the target. The controller can further select which antennas are used for receiving the radar signal. In this way, the controller can further optimize the wireless communication chipset for digital beamforming. By utilizing these techniques, the wireless communication chipset can be used for wireless communication or radar sensing.

Abstract: A radio wave measurement system includes: an aerial moving body to move or to hover above a measurement target antenna for radiating a radio wave in a sky direction; and a position measurer to measure a time added position of the aerial moving body. The aerial moving body includes a measurement antenna to receive the radio wave and a radio wave measurer to measure time-added received radio wave data. The aerial moving body further includes a beam shape data generator to generate radiated radio wave data including the received radio wave data and the radio wave source relative position data representing measurement point data that is a position of the aerial moving body at a point of time when the received radio wave data is measured as a relative position with respect to the measurement target antenna.

Abstract: A wireless transmitting and receiving device includes antennas, weight adjusters connected to antennas, respectively, and configured to apply weights to an amplitude and a phase of a signal communicating through the antennas, signal transmitting and detecting units connected to the weight adjusters, respectively, a transmitter and a receiver connected to a first switch, a power distributor configured to connect the first switch to the respective signal transmitting and detecting units through internal wirings, and a compensator configured to the weights of the weight adjusters according to output signals of the signal transmitting and detecting units.

Abstract: A digitally controlled phase shifter for an antenna is provided. The phase shifter includes a coupler extending between input and output ports and first and second digitally tunable capacitance circuitry coupled to opposite ends of the coupler. Each first and second digitally tunable capacitance circuitry includes a digitally tunable capacitance. The phase shifter also includes control circuitry that includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, upon execution by the at least one processor, cause the control circuitry to vary the capacitance of the digitally tunable capacitance of at least one of the first and second digitally tunable capacitance circuitry in order to modify a phase shift provided by the phase shifter. A control circuitry and a method are also provided for controlling the phase shift provided by a phase shifter.

Abstract: A device includes a switching unit including N input ports and M output ports, wherein N?M?2. The switching unit is configured to selectively interconnect each of the M output ports with a different one of the N input ports. The device further includes M attenuators, wherein each of the M attenuators is electrically coupled to a different one of the M output ports of the switching unit.

Abstract: A method for acquiring an indication of a preferred beam of a wireless communication device is disclosed. The method is performed in a network node of a cellular communication network. The network node is adapted to support a plurality of beams of a signal beam-forming scheme and to communicate with the wireless communication device using at least one beam of the plurality of beams. A message indicative of the beam power setting is transmitted to the wireless communication device. Measurement signals are also transmitted. A report indicative of the preferred beam is received from the wireless communication device. The preferred beam is determined by the wireless communication device based on the measurement signals and the beam power setting. Corresponding methods for the wireless communication device, as well as corresponding arrangements, network node, wireless communication device, cellular communication network, and computer program products are also disclosed.

Abstract: A determination of an angle of arrival of radiofrequency (RF) radiation can be made using compressive sensing techniques to inform a receiver portion of a radar system using fewer measurements and samples of the received signal. A method for compressive sensing at an array antenna includes forming a plurality subarrays of array elements from the array antenna such that each subarray includes two or more array elements, capturing data at the plurality of subarrays of array elements, modulating phase properties of the data captured at each of the subarrays, combining the modulated data from each of the plurality of subarrays to form a measurement having phase and magnitude measurements corresponding to the combined modulated data and determining angle of arrival information for the data using the measurement matrix.

Abstract: A satellite communication system processes a plurality of input signals to generate beamformed signals, drives a plurality of nonlinear power amplifiers with the beamformed input signals to produce RF signals for transmission; and transmits the RF signals with a plurality of Tx antenna elements. Conversion to and from linear signals to and from nonlinear or digitized signals is performed. Temporal or spatial decorrelation of the beamformed signals is employed to reduce the impact of intermodulation products. In some cases the power amplifiers are nonlinear, and can be one-sided or two-sided and produce two or three distinct output levels.

Abstract: A real-time data transmission system includes an aerial device and a base station. The aerial device has a first antenna module transmitting data in a frequency band with wide-bandwidth and high-speed transmission characteristics. The base station includes a second antenna module configured to receive data from the first antenna module of the aerial device in the frequency band. The radiation direction of the second antenna is adjustable in accordance with the position of the aerial device.

Abstract: There is provided an antenna arrangement for a radio transceiver device. The antenna arrangement comprises at least two antenna arrays, wherein at least one of the at least two antenna arrays has antenna elements of two polarizations. The antenna elements of one polarization at each of the at least two antenna arrays define a respective set of antenna elements. The antenna arrangement comprises at least two baseband chains. The antenna arrangement comprises a switching network configured to selectively operatively connect each of the at least two baseband chains with its own set of antenna elements such that no two baseband chains are operatively connected to one and the same set of antenna elements. Each of the at least one antenna array that has antenna elements of two polarizations is operatively connected to the switching network via a respective hybrid connector configured to provide a signal from one of the baseband chains to antenna elements of both polarizations.

Abstract: A multiway switch, a radio frequency system, and a wireless communication device are provided. The multiway switch is applicable to a wireless communication device being operable in a single-frequency single-transmit mode. The multiway switch includes five T ports and 2n P ports. The five T ports are configured to be coupled with a radio frequency circuit. The 2n P ports are configured to be coupled with an antenna system comprising 2n antennas. The five T ports include one first T port coupled with all of the 2n P ports. The multiway switch is configured to be coupled with the radio frequency circuit and the antenna system to implement a preset function of the wireless communication device of transmitting a sounding reference signal (SRS) through 2n antennas corresponding to the 2n P ports in turn.

Abstract: A multi-layer phase shift driving device for an electrically regulated antenna includes multiple control boards that are spaced apart from each other, each of which is arranged with respective phase shift driving mechanisms for driving brushes of the electrically regulated antenna, and arranged with a plurality of holes through which rods pass, wherein each control board is provided with at least one of said rods fixed thereto to serve as fixing rods of the control board and serve as guiding rods of the other control boards of the multiple control boards, such that the multiple control boards can be driven independently of each other.

Abstract: An antenna system may include a first phase shifting network to output a first set of component signals from a first component signal having a first frequency, a second phase shifting network to output a second set of component signals from a second component signal having a second frequency, the first frequency being less than the second, and an antenna array, the first phase shifting network to impart a first tilt angle for the first set of component signals, the second phase shifting network to impart a second tilt angle for the second set of component signals, and a single variable electrical tilt controller to control the first and second phase shifting networks and being configured to maintain a ratio between the first tilt angle and the second tilt angle, where the first tilt angle is greater than the second tilt angle, and where the ratio is less than one.

Abstract: A new antenna array of the invention which has simple structure, small volume and can adopt a variety of realization forms, it can be easily integrated in the PCB of the mobile terminal using surface mount technology (SMT) or multi-layer PCB integration and other forms of technology. The antenna array is compact and can be configured with different number of antenna elements to meet the gain requirements. The antenna array is small in size and has a wide antenna bandwidth that can cover multiple 5G millimeter-wave bands while maintaining a directional high antenna gain and a stable radiation pattern. The antenna array can satisfy the millimeter-wave 5G communication requirements such as high gain, beam forming characteristics, beam scanning characteristics, and can be easily integrated into a portable mobile terminal.

Abstract: A method of radio frequency identification (RFID) tag bearing estimation comprises: at an RFID tag reader having a plurality of antenna elements, emitting a primary transmit beam; receiving a response signal from an RFID tag via the antenna elements; generating a first set of signal measurements corresponding to a first set of receive beam characteristics, based on a first partition of the response signal; generating a second set of signal measurements corresponding to a second set of receive beam characteristics, based on a second partition of the response signal; and combining the first and second sets of signal measurements, for selection of an estimated tag bearing for the RFID tag from the first and second receive beam characteristics.

Abstract: A method of detecting a direction of arrival of at least one interference signal interfering a wanted signal in a plurality of received signals involves receiving, by a number of antennas of an antenna array, a number of signals, identifying an interference signal in the received signals, applying a beam forming signal processing technique to the identified interference signal, and detecting the direction of arrival from the results of the beam forming signal processing.

Abstract: Embodiments herein provides a method and system for beam steering in a Multiple Input Multiple Output (MIMO) system. The method comprising determining a precoder matrix based on at least one of an inter-antenna element spacing controlled based on a selection of a number of antenna elements at the transmitter and a location of at least one receiver; and steering a transmit beam using the precoder matrix towards the at least one receiver. Yet another embodiments proposes the method and system for steering the at least one optimal receive beam or optimal sub-receive beam towards the at least one transmitter based on at least one of a Channel Quality Indication (CQI), a Channel State Information (CSI), and a location.

Abstract: An antenna module includes a plurality of antenna units, wherein one of the antenna units includes a fixed phase and the other antenna units respectively include a phase adjusted in response to the fixed phase.

Abstract: An optical phase shifter may include a waveguide core that has a top surface, and a semiconductor contact that is laterally displaced relative to the waveguide core and is electrically connected to the waveguide core. A top surface of the semiconductor contact is above the top surface of the waveguide core. The waveguide core may include a p-type core region and an n-type core region. A p-type semiconductor region may be in physical contact with the n-type core region of the waveguide core, and an n-type semiconductor region may be in physical contact with the p-type core region of the waveguide core. A phase shifter region and a light-emitting region may be disposed at different depth levels, and the light-emitting region may emit light from a phase shifter region that is in a position adjacent to the light-emitting region.

Abstract: In order to make it possible to prevent occurrence of an interference among terminal apparatuses when a base station forms a beam toward a terminal apparatus by beam-forming to transmit a downlink signal, and to improve reception quality at a terminal apparatus.

Abstract: A phased array system includes at least two traveling wave antennas arranged in parallel, and each traveling wave antenna includes at least two antenna units sequentially connected. A first end of each traveling wave antenna connects to a corresponding first radio frequency channel. The first end of each traveling wave antenna connects to a signal processing module of the phased array system by using the corresponding first radio frequency channel. A phase and/or an amplitude of a signal inputted by the signal processing module from the first end into the traveling wave antenna may be adjusted by adjusting a configuration of the first radio frequency channel.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. More particularly, aspects of the present disclosure provide multiplexing schemes which may be suited for the single carrier waveform. For example, some techniques and apparatuses described herein permit multiplexing of multiple, different data streams without destroying the single-carrier properties of the waveform. Additionally, or alternatively, some techniques and apparatuses described herein may provide unequal error protection, unequal bandwidth allocation, and/or the like as part of the multiplexing schemes. Examples of multiplexing schemes described herein include in-phase/quadrature (I/Q) multiplexing, superposition quadrature amplitude modulation (QAM) based at least in part on layered bit mapping, polarization division multiplexing of QAM with superposition coding, and frequency division multiplexing using UE-specific beams.

Abstract: A transmission line is provided with a fixed physical length and a programmable electrical length for achieving a programmable time delay. The transmission line can include a dielectric and a biasing device disposed across the dielectric, and the biasing device can dynamically and continuously vary an absolute level of a bias voltage across the dielectric to vary a dielectric constant of the dielectric, which can vary a time delay of the transmission line. In some embodiments, the biasing device can modulate the bias voltage from a positive voltage to a negative voltage at a frequency and with waveform characteristics that prevent such modulation from interfering with a signal propagating through the dielectric, that prevent the bias voltage from unintentionally varying the time delay of the transmission line when the absolute level of the bias voltage is constant, and that prevents ion impurities within the dielectric from accumulating on bias electrodes.

Abstract: The present disclosure relates to a wireless communication node (1) comprising at least one antenna arrangement (2, 2?, 2?). Each antenna arrangement (2, 2?, 2?) comprises at least one antenna port (3), at least two antenna elements (4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b) arranged for providing an antenna beam pattern (8), and a phase control arrangement (9, 9?, 9?) arranged to receive at least one input signal (10) via said antenna port (3) and to determine a plurality of intermediate signal components (11) from said input signal (10) by determining a first set of respective phase shifts (?1, ?2, 10 ?3, ?4; ?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8) for said input signal (3).

Abstract: An apparatus includes a phased array antenna panel and one or more beam former circuits. The phased array antenna panel generally comprises a plurality of antenna elements. The plurality of antenna elements are generally arranged in one or more groups. The one or more beam former circuits may be mounted on the phased array antenna panel. Each beam former circuit is generally coupled to a respective group of the antenna elements. Each beam former circuit generally comprises a plurality of transceiver channels comprising a transmit channel and a receive channel. The phased array antenna panel is generally configured to distribute a control signal to each of the beam former circuits. Each of the transceiver channels is generally configured to switch between a transmit mode and a receive mode in response to the control signal.

Abstract: There is provided a signal distribution network for an antenna arrangement with fewer input ports than antenna elements. The signal distribution network comprises at least two signal splitters. The signal distribution network comprises at least one signal combiner. Each signal splitter is configured to receive one input baseband signal from a unique input port and to provide one direct feed signal as input to a unique antenna element, and to provide one intermediate signal as input to at least one of said at least one signal combiner. Each signal combiner is configured to receive two intermediate signals, each intermediate signal being received from a respective signal splitter of the at least two signal splitters, and to provide one combined signal as input to a unique antenna element, wherein the one combined signal is formed by combining the received two intermediate signals.

Abstract: An antenna device for a vehicle for a vehicle serves for a vehicle transceiver device whose transmission power level regulation device is configured in a manner such that, during the bidirectional communication, the transmission power level is set as larger as the quality of the communication link falls and is conversely lowered as the transmission quality of the communication link increases.

Abstract: The embodiments of the present disclosure provide an antenna system, including a barrel directional antenna array, a radio frequency transceiver, and a baseband signal processing and control unit. Based on the barrel directional antenna array, the antenna system can adjust the quantity of sectors in a 360-degree range based on a change in a service volume in the 360-degree sector, so that an adjusted sector service capacity threshold can accommodate the service volume in the 360-degree sector. In this way, resource scheduling flexibility is improved.

Abstract: A MIMO test system is provided that performs non-cable-conducted, over-the-air radiated calibration and test modes of operations. A DUT is located in an anechoic chamber having a plurality of probe antennas disposed therein. During the calibration mode, the test instrument causes predetermined signals to be transmitted over a transmission channel comprising a non-cable-conducted, OTA interface between probe antennas of the chamber and antenna ports of the DUT and obtains measurements of received power and relative phase. The test instrument uses the measurements to construct a radiation channel matrix associated with the transmission channel and obtains an inverse matrix of the radiation channel matrix. During the test mode, the test system performs a non-cable-conducted, OTA radiated test during which the test instrument applies the inverse matrix to DUT performance measurements obtained by the test instrument to calibrate out the radiation channel matrix from the DUT performance measurements.

Abstract: A radar sensing system for a vehicle, the radar sensing system including a transmitter and a receiver. The transmitter is configured to transmit a radio signal. The receiver is configured to receive the transmitted radio signal reflected from objects in the environment. The transmitter includes an antenna and is configured to transmit the radio signal via the antenna. The antenna includes a plurality of linear arrays of patch radiators. An arrangement of the linear arrays of patch radiators is selected to form a desired shaped antenna pattern having a desired mainlobe shape and desired shoulder shapes to cover selected sensing zones without nulls or holes in the coverage.

Abstract: An active repeater device includes a primary sector and at least a secondary sector communicatively coupled to the primary sector receives or transmits a first beam of input RF signals having a first beam pattern from or to a base station, respectively. The primary sector includes an baseband signal processor and a first radio head (RH) unit. The secondary sector comprises a second RH unit. The first beam pattern covers a first geographical area. Beamforming coefficients are generated to convert the first beam pattern of the first beam of input RF signals to a second beam pattern. A second beam of output RF signals in the second beam pattern is transmitted from or received by, respectively, the secondary sector to or from, respectively, a plurality of user equipment (UEs) based on the generated beamforming coefficients and the received first beam of input RF signals.

Abstract: A first communication device generates a beamforming training initiator packet for transmission in the wireless communication network, the beamforming training initiator packet including i) information indicating a start of a beamforming training session, and ii) respective identifiers of multiple second communication devices that are to process beamforming training packets transmitted by the first communication device during the beamforming training session. The first communication device transmits the beamforming training initiator packet, and after transmitting the beamforming training initiator packet, transmits a plurality of beamforming training packets during the beamforming training session.

Abstract: Techniques that facilitate reconfigurable transmission of a radar frequency signal are provided. In one example, a system includes a signal generator and a power modulator. The signal generator provides a radar waveform signal from a set of radar waveform signals. The power modulator divides a local oscillator signal associated with a first frequency and a first amplitude into a first local oscillator signal and a second local oscillator signal. The power modulator also generates a radio frequency signal associated with a second frequency and a second amplitude based on the radar waveform signal, the first local oscillator signal and the second local oscillator signal.

Abstract: A system comprises a first transceiver circuit, a second transceiver circuit, and a first data bus. The first transceiver circuit is configured to receive first signals from first antenna elements, beamform the first signals to generate a first beamformed signal, downconvert the first beamformed signal as part of generation of a first downconverted beamformed signal, and transmit the first downconverted beamformed signal onto the first data bus. The second transceiver circuit is configured to receive second signals from second antenna elements, beamform the second signals to generate a second beamformed signal, downconvert the second beamformed signal as part of generation of a second downconverted beamformed signal, receive the first downconverted beamformed signal via the first data bus, and combine the first downconverted beamformed signal and the second downconverted beamformed signal to generate a combined signal for demodulation.

Abstract: An active repeater device includes a primary sector and at least a secondary sector communicatively coupled to the primary sector receives or transmits a first beam of input RF signals having a first beam pattern from or to a base station, respectively. The primary sector includes an baseband signal processor and a first radio head (RH) unit. The secondary sector comprises a second RH unit. The first beam pattern covers a first geographical area. Beamforming coefficients are generated to convert the first beam pattern of the first beam of input RF signals to a second beam pattern. A second beam of output RF signals in the second beam pattern is transmitted from or received by, respectively, the secondary sector to or from, respectively, a plurality of user equipment (UEs) based on the generated beamforming coefficients and the received first beam of input RF signals.

Abstract: The present invention provides a scanning method to reduce overhead in a millimeter wave (mmWave) scanning scheme by using position information of a terminal in a mmWave system, and devices supporting same.

Abstract: Provided is a method for estimating a Doppler frequency in a wireless communication system that operates in a millimeter wave (mmWave) bandwidth. A receiver implements a beam scanning process by using a plurality of preambles corresponding respectively to a plurality of beams to which mutually different beam forming is applied, and estimates a Doppler frequency for each of the plurality of beams. The plurality of preambles may correspond respectively to the beam forming directions of the plurality of beams.

Abstract: Audio device systems and methods are provided to enhance speech pick-up from a user. The systems and methods receive signals from a plurality of microphones coupled to one or more earpieces. The signals are processed using a first array processing technique to enhance their acoustic response from a selected direction, such as a direction of the user's mouth, to provide a primary signal. The signals are also processed using a second array processing technique to enhance response from the selected direction, to provide a secondary signal. The primary signal and the secondary signal are compared, and a selected signal is provided based upon the primary signal, the secondary signal, and the comparison.

Abstract: Embodiments of the present application provide an antenna adjustment method, an antenna, and a base station control center, where the antenna includes: a detection unit, configured to detect a current orientation parameter of the antenna; an obtaining unit, configured to obtain remote electrical tilt data of multiple element arrays in the antenna that are corresponding to a target frequency band, where the remote electrical tilt data is determined according to a difference between a target orientation parameter of a beam of the multiple element arrays and the current orientation parameter; and an adjustment unit, configured to adjust an orientation of the beam of the multiple element arrays according to the remote electrical tilt data. According to the embodiments of the present application, multiple element arrays in the antenna that are corresponding to each frequency band can be separately adjusted, thereby improving antenna performance.