|| List of recent Beamforming-related patents
| Central node apparatus and method for transmitting wireless signals between central office node and remote node using beam patterns and antenna polarization|
A central office node using beam patterns and antenna polarizations, a remote node, and a wireless communication method between the nodes. The central office node includes: a first antenna array with first polarization attributes; a second antenna array with second polarization attributes; and a transmitter unit configured to transmit data to a plurality of remote nodes using beam patterns generated during beamforming and the polarization of the first and second antenna arrays..
| Method and arrangement in a mobile communications network|
The present invention relates to an arrangement and method to design orthogonal ue-specific reference signals so that multiple ue-specific reference signals are feasible to support non-codebook-based multi-stream beamforming/precoding. This is achieved by re-using an existing ue-specific reference signal to obtain additional ue-specific reference signals being orthogonal to the existing ue reference signal..
| Method and system for explicit feedback with sounding packet for wireless local area networks (wlan)|
Aspects of a method and system for explicit feedback with a sounding packet for wireless local area networks (wlan). Aspects of the system may include a beamforming block that may enable generation of a plurality of rf chain signals based on a current steering matrix, where the current steering matrix may be a non-identity matrix.
|Beamforming for increasing cell edge capacity in a heterogeneous network|
Methods of communicating with a selected user equipment terminal (ue) in a first cell served by a base station and a remote radio head include forming a list of non-targeted ues including other ues in the first cell and cell edge ues in a neighboring cell that borders the first cell that are located near a border of the first cell and the neighboring cell, generating a list of candidate precoding matrices that can be used to communicate with the selected ue from the base station and/or from the remote radio head, generating a list of available precoding matrices by discarding from the list of candidate precoding matrices those precoding matrices that may cause interference to at least one non-targeted ue, selecting a precoding matrix from the list of available precoding matrices, and communicating with the selected ue using the selected precoding matrix.. .
|Mitigation of interfence from a mobile relay node to heterogeneous networks|
Devices, systems and methods for mitigating the interference introduced by mobile relay nodes in a heterogeneous network are described. The techniques described apply fractional frequency reuse and power controlled beamforming to mitigate such interference..
|Method and apparatus for acoustic area monitoring by exploiting ultra large scale arrays of microphones|
Systems and methods are provided to create an acoustic map of a space containing multiple acoustic sources. Source localization and separation takes place by sampling an ultra large microphone array containing over 1020 microphones.
|High-throughput beamforming mimo receiver for millimeter wave communication and method|
A receiver in a communication system is provided that includes a synchronization module and a channel estimator. The synchronization module is configured to identify an end of a cyclic prefix (cp) in a received signal using slope detection by monitoring a detection metric threshold in the received signal.
|Apparatus and method for transmitting/receiving feedback information in a wireless communication system using beamforming|
An apparatus performs a method for generating information indicating channel quality when a dynamic range of a receive signal strength and an interference signal strength is considerable in a wireless communication system using beamforming. A base station (bs) for processing feedback information for scheduling receives from a mobile station (ms) first feedback information comprising a receive signal strength measurement result in paths selected from a plurality of downlink paths between the bss and the ms, designates a transmit (tx) resource for interference measurement of the ms based on the first feedback information, receives from the ms second feedback information comprising an interference measurement result in the designated tx resource region, and calculates a signal to interference plus noise ratio (sinr) of the ms based on the first feedback information and the second feedback information.
|Access control reader with audio spatial filtering|
An access control reader enhances audio data captured by a beamforming microphone array. The access control reader determines a direction to a user and then utilizes beamforming in the direction of the user to enhance the user's voice.
|Ultrasonic diagnostic apparatus and beamforming method|
An ultrasonic diagnostic apparatus includes: a first reference beam generating unit generating a first reference beam from das signals calculated in an n-th frame; a second reference beam generating unit generating a second reference beam from a das signal calculated in an (n−1)-th frame, the das signal calculated in the n-th frame, and another das signal calculated in an (n+1)-th frame; an attenuation coefficient calculating unit calculating, based on the first reference beam and the second reference beam, an attenuation coefficient to be multiplied by the das signals calculated in the n-th frame; and a beamforming unit generating and providing a beamformed signal generated for a reference scan line in the n-th frame by multiplying a das signal calculated in the n-th frame by the attenuation coefficient.. .
|Iterative coordinated beamforming systems and methods|
Methods in a multiple-cell cellular network that implements iterative coordinated beamforming (i-cbf) algorithms with limited cooperation from adjacent nodes (base stations and/or mobile stations) may jointly determine transmit beamforming vectors and receive combining vectors to increase sum throughput. The transmit beamforming vectors and receive combining vectors can be determined based on a performance metric, such as by maximizing sinr (signal-to-interference-and-noise ratio) for each mobile station in the network, maximizing slnr (signal-to-leakage-and-noise ratio) for each base station in the network, or minimizing smse (sum mean square error).
|Method for wifi beamforming,feedback, and sounding (wibeam)|
Methods for wifi beamforming, feedback, and sounding (wibeam) are described. Codebook based beamforming feedback signaling and sounding mechanisms for use in wireless communications are disclosed.
|Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication system|
A method for transmitting a signal from a transmitter over a channel to a receiver on a power line network, wherein said signal is ofdm-modulated on a set of sub-carriers, is proposed, wherein an ofdm tonemap and an eigenbeamforming encoding matrix are determined based on a channel estimation for each sub-carrier, a tonemap feedback signal and an eigenbeamforming feedback signal are generated, which are descriptive of said ofdm tonemap and said eigenbeamforming encoding matrix, respectively, and transmitted to the transmitter. A corresponding receiver, a transmitter, a power line communication and a power line communication system are described as well..
|System and method for adaptive beamforming for specific absorption rate control|
A system may include a modifiable mobile device having at least two antennas coupled to fractional amplifiers, with returned power detectors. A beamformer unit provides adaptive beam shaping pattern, and a baseband processor provides beam pattern requirements, wherein the beamformer unit modifies the beam pattern requirements with return loss sampling information to shape the adaptive beam pattern so that a transmitted beam pattern minimizes transmitted power reflected back to the mobile device.
|Multi-user multi-stream beamforming method, apparatus, and base station|
The present invention relates to a multi-user multi-stream beamforming method and apparatus, and a base station. The multi-user multi-stream beamforming method includes the steps of: a) calculating a beamforming matrix of each user in the multi-user according to a minimum leakage principle; b) determining a user average signal to leakage noise ratio (slnr) of the multi-user according to the beamforming matrix of each user; c) determining whether the user average slnr is stable, and if the user average slnr is not stable, returning to step a) to recalculate the beamforming matrix of each user by using the calculated beamforming matrix of each user..
|Method and apparatus for combined adaptive beamforming and mimo in indoor wireless lan|
A wireless local area network (wlan) device comprising a processor, a transceiver coupled to the processor, a switching mechanism coupled to the transceiver, a beamforming antenna assembly coupled to the switching mechanism, and a multiple input, multiple output (mimo) antenna assembly coupled to the switching mechanism. Included is an apparatus comprising a processor and a memory coupled to the processor, wherein the memory comprises instructions that cause the processor to calibrate a wlan device, select an optimal antenna configuration, track the wlan device performance, and wait for a triggering event.
|Antenna resource management for multi-antenna structure|
A radio network node antenna management system dynamically manages a multi-antenna structure (200). The multi-antenna structure (200) includes a set of n antennas with beamforming capability.
|System and method for discrete gain control in hybrid mimo rf beamforming for multi layer mimo base station|
A multiple-input-multiple-output (mimo) receiving system configured for receiving multiple transmission layers is provided herein. The system includes a plurality of beamformed tunable receiving antennas configured to receive a plurality of transmitted layers; and a control module configured to select for the beamformed antennas a single set of discrete weights for tuning said antennas for all of the transmitted layers so that the weights are selected for optimal performance of said receiving system, wherein said selection is carried out based on an extended maximal ratio combining (mrc) metric or other quality metric measured by the mimo baseband module, and using said measured metric separately for each beamformed antenna to determine gain or attenuation independently of phase selection..
|System and method for supporting multiple reverse link data streams|
A method for wireless communication includes determining a number of uplink data streams to transmit from a mobile device and determining a selection of antennas from a plurality of antennas for transmitting the uplink data streams. The method also includes determining beamforming parameters based at least in part on a beamforming identifier.
|Multi-stage charge re-use analog circuits|
A linear transform can be performed using a passive analog multi-stage charge re-use linear transform circuit. The passive analog multi-stage charge re-use linear transform circuit transforms an input analog circuit to generate a transformed analog output signal.
|Mimo beamforming method and method of constructing a differential codebook for a wireless network|
A mimo beamforming method comprises receiving at a base station information regarding a difference between an ideal beamforming matrix and an averaged beamforming direction, using the information to construct a beamforming matrix at the base station, and performing a beamforming operation using the reconstructed beamforming matrix. Alternatively, the method comprises computing at a subscriber station an averaged beamforming direction, computing at the subscriber station a quantization index corresponding to a differential matrix in a differential codebook, and transmitting the quantization index across a wireless channel of the wireless network.
|Beamforming method and ultrasonic diagnostic apparatus|
A beamforming method includes: generating a main beam signal by performing, with a focus on a first region, a delay and sum operation on receiving echo signals; generating a sub beam signal which has a low sensitivity to ultrasound signals reflected off the first region; and generating a narrow beam signal by (i) calculating a coefficient for narrowing an angle of the main beam signal, and (ii) multiplying the main beam signal by the coefficient, wherein in the generating of a sub beam signal, the sub beam signal is generated using a differential signal that is a difference between two beam signals each of which is generated by performing a delay and sum operation on the receiving echo signals, with a focus on a corresponding one of two regions of a subject which are different from the first region and are different from each other.. .
|Method for generating synthetic image and ultrasonic imaging apparatus using same|
The present disclosure relates to a method for generating a synthetic image. In the method, image data is generated using a receiving dynamic beamforming method, image data is generated using a synthetic aperture beamforming method, and the image data generated using the receiving dynamic beamforming method and the image data generated using the synthetic aperture beamforming method are synthesized with being applied with weighting factors according to advancing distances of ultrasonic waves.
|Use of an earpiece acoustic opening as a microphone port for beamforming applications|
A mobile multi-function device that includes a speaker, two or more microphones, and a beamformer processor is described. The beamformer processor uses the microphones to perform beamforming operations.
|Method and system for noise reduction|
A method for noise reduction is provided including: beamforming audio signals sampled by a microphone array to get a signal with an enhanced target voice and a signal with a weakened target voice; locating a target voice in the audio signal sampled by the microphone array; determining a credibility of the target voice when the target voice is located; updating an adaptive filter coefficient according to the credibility, and filtering the signal with the enhanced target voice and the signal with the weakened target voice according to the updated adaptive filter coefficient to get a signal with reduced noise; and weighing a voice presence probability by the credibility, and enhancing the signal with reduced noise according to the weighed voice presence probability.. .
|Beamforming feedback options for mu-mimo|
Beamforming may be used in mimo communication systems to further enhance spectral efficiency. Beamforming refers to beamed transmissions to a single destination (e.g., a station) at a time, to enhance the rate and/or range of transmission.
|Frequency domain equalizer for a beamformed system|
A method, system, and computer program product for beamforming in a wireless communication system is disclosed. The method, system, and computer program product comprise a plurality of transmit antennas for a transmitter and at least one receive antenna for a receiver.
|Beamforming feedback options for mu-mimo|
Beamforming may be used in mimo communication systems to further enhance spectral efficiency. Beamforming refers to beamed transmissions to a single destination (e.g., a station) at a time, to enhance the rate and/or range of transmission.
The present invention relates to improving the throughput and power efficiency of communication systems that use beamforming to accurately orient transmission of signals between emitters and receivers. A first communication device implements adaptive beamforming with respect to a second communication device.
|Object information acquiring apparatus, information processing apparatus and object information acquiring method|
An object information acquiring apparatus is provided that includes: a plurality of receiving elements which receive an acoustic wave that propagates from an object, and which convert the acoustic wave to a reception signal; an adaptive beamformer that performs adaptive beamforming of adjusting reception directionality in accordance with the reception signal in use of the reception signal; a delay-and-sum beamformer that performs delay-and-sum beamforming having preset directionality in use of the reception signal; an amplitude modulator that uses one output signal of one of the adaptive beamformer and the delay-and-sum beamformer, to perform amplitude modulation on an output signal of the other one of the beamformers; and a generator that, on the basis of a signal outputted by the amplitude modulator, generates image data on the interior of the object.. .
|Systems and methods for interference alignment in wi-fi|
System and method embodiments are provided for interference alignment in a wireless local area network (lan) with an overlapping basic service set (obss). In an embodiment, a method includes instructing a first access point (ap) in the wireless lan to broadcast a null data packet (ndp) sounding packet to a plurality of stations when no other ap is broadcasting, wherein the ndp sounding packet comprises a plurality of long training field (ltfs), and wherein a total number of ltfs is equal to a total number of transmission streams, receiving channel beamforming (bf) information and a signal plus interference to noise ratio (sinr) from each of the stations, wherein each of the stations computes the channel bf information and the sinr from sounding packets received from each of the aps in the wireless lan, and determining a transmission schedule according to the sinrs and the channel bf information..
|Ultrasound probe with integrated electronics|
A hand-held ultrasound system includes integrated electronics within an ergonomic housing. The electronics includes control circuitry, beamforming and circuitry transducer drive circuitry.
|Multi-user and single user mimo for communication systems using hybrid beam forming|
A station in a wireless communication system includes a processor circuitry configured to form at least a first plurality of data streams and a second plurality of data streams, and a digital precoder configured to receive the first plurality of data streams and the second plurality of data streams. The wireless station can further include a plurality of radio frequency (rf) beamforming chains connected to the digital precoder and configured to form at least one rf envelope, wherein the digital precoder is configured to steer a plurality of digital beams within the at least one rf beam envelope, the digital beams forming a plurality of spatially distinct paths for the first plurality of data streams and a plurality of spatially distinct paths for the second plurality of data streams, and a plurality of antennas operably connected to the rf beamforming chains..
|Reference signaling scheme using compressed feedforward codebooks for mu-mimo systems|
A multi-user mimo downlink beamforming system with limited feed forward (200) is provided to enable precoding matrix information to be efficiently provided to a subset of user equipment devices (201.i), where zero-forcing transmit beamformers (wi) are computed at the base station (210) and assembled into a precoding matrix (w). The precoding matrix is encoded using a compact reference signal codebook (225, 207.i) for forward link signaling, either by sending bits indicating the index of the transmission matrix used, or by transmitting one or more precoded pilots or reference signals wherein the pilot signals are precoded using vectors uniquely representative of the transmission matrix used which includes candidate reference signal matrices which meet a predetermined condition number requirement, such as a condition number threshold.
|Generalized reference signaling scheme for multi-user multiple input, multiple output (mu-mimo) using arbitrarily precoded reference signals|
A multi-user mimo downlink beamforming system is provided to enable transmit beamforming vectors to be efficiently provided to a subset of user equipment devices, where spatial separation or zero-forcing transmit beamformers (wi) are computed at the base station and used to generate precoded reference signals. The precoded reference signals are fed forward to the user equipment devices, which apply one or more hypothesis tests to the precoded reference signals to extract the precoding matrix (w), including the specific transmit beamforming vector (wue) designed for the user equipment, and this extracted information is used to generate receive beamformers (vi)..
|Beamforming feedback frame formats within multiple user, multiple access, and/or mimo wireless communications|
Beamforming feedback frame formats within multiple user, multiple access, and/or mimo wireless communications. A transmitting wireless communication device (tx) transmits a sounding frame to one or more receiving wireless communication devices (rxs) using one or more antennae and one or more clusters.
|Multi-state beamforming array|
A sonar system and method of operating a sonar system are disclosed. In one embodiment, the sonar system comprises an array of transducers and a multiplexer configurable into a plurality of states.
|Harmonic ultrasound imaging using synthetic aperture sequential beamforming|
A method includes generating an ultrasound image based on the harmonic components in the received echoes using multi-stage beamforming and data generated therefrom. An ultrasound imaging system (100, 200) includes a transducer array (108) including a plurality of transducer elements configured to emit ultrasound signals and receive echoes generated in response to the emitted ultrasound signals.
|Method and system for a distributed configurable transceiver architecture and implementation|
In communication device comprising a plurality of distributed transceivers and one or more corresponding antenna arrays, a first distributed transceiver is configured to receive signals comprising one or more first data streams and a second distributed transceiver is configured to receive signals comprising one or more second data streams. One or more components within a transmit processing chain of the first distributed transceiver and/or one or more components within a transmit processing chain of the second distributed transceiver are adjusted to maximize beamforming gain for the one or more first data streams and/or second data streams.
|Method for signalling a precoding in a cooperative beamforming transmission mode|
(d) transmitting a first indicator representative of the first precoding matrix.. .
|Beamforming devices and methods|
Devices and methods are provided for directionally receiving and/or transmitting acoustic waves and/or radio waves for use in applications such as wireless communications systems and/or radar. High directional gain and spatial selectivity are achieved while employing an array of receiving antennas that is small as measured in units of the wavelength of radio waves being received or transmitted, especially in the case of spatially oversampled arrays.
|Methods and arrangements for beamforming reports in wireless networks|
Logic of an access point may transmit a null data packet for beamforming training and transmit a beamforming report poll to the first station on a user list before receiving a transmission from the first station on the user list. Logic may wait for a timeout period to determine whether the first station on the user list will respond to the null data packet prior to transmitting the beamforming report poll.
|Dielectric resonator array antenna|
Disclosed herein is a dielectric resonator array antenna including one or more series-feed type array elements installed to be arranged in parallel in a multilayer substrate, wherein first high frequency signals having the same or different phases or time delays are adjusted to be applied to the respective series-feed type array elements and respective radiated 1d array beams are individually used or combined to adjust beamforming of 2d array beams. Also, since the series-feed type array element is configured by connecting a plurality of dielectric resonator antennas in series, it can be easily and simply fed in series through coupling generated by the intervals between the feeding lines of the pertinent feeding unit of the plurality of dielectric resonator antennas connected in series.
|Method and apparatus for a clock and signal distribution network for a 60 ghz transmitter system|
Herein is presented, a low power on-die 60 ghz distribution network for a beamforming system that can be scaled as the number of transmitters increases. The transmission line based power splitters and quadrature hybrids whose size would be proportional to a quarter wavelength (˜600 μm) if formed using transmission lines are instead constructed by inductors/capacitors and reduce the area by more than 80%.
|Method and apparatus for a class-e load tuned beamforming 60 ghz transmitter|
The class-e amplifier can be tuned to pass only the fundamental frequency to the antenna by optimizing the second harmonics at the drain of the final pa driver transistor. A cpw in series with a capacitor between the pa transistor and the load forms a band pass filter that only allows the fundamental frequency to pass to the load of the antenna.
|Mimo beamforming-based single carrier frequency division multiple access system|
A multiple-input multiple-output (mimo) beamforming-based single carrier frequency division multiple access (sc-fdma) system is disclosed. At the transmitter, a fast fourier transform (fft) is performed on transmission data to generate frequency domain data.
|Ultrasonic diagnostic apparatus and control method thereof|
An ultrasonic diagnostic apparatus includes a probe including a transducer which transmits an ultrasound signal to a target, receives the ultrasound signal reflected from the target, and transduces the received ultrasound signal into an analog signal; an a/d converter which converts the analog signal output by the probe into a digital signal; a compression unit which compresses the digital signal output from the a/d converter; and a host computer which decompresses the digital signal compressed by the compression unit and performs beamforming.. .
|Image processing module, ultrasonic imaging apparatus using the image processing module, and ultrasonic image generation method using the ultrasonic imaging apparatus|
An image processing module includes a beamforming unit configured to provide a beamformed signal based on an input signal; a point spread function (psf) database comprising at least one two-dimensional point spread function obtained based on at least one situational variable of the beamformed signal; and an image generation unit configured to select at least one two-dimensional point spread function from the point spread function database and perform deconvolution using the beamformed signal and the selected at least one two-dimensional point spread function to generate an image of a target portion of an object.. .
|Transmission method and mobile station to carry out the method|
A method, in a cellular radio-communication system comprising a core network and an access network, the access network comprising base stations for providing wireless links to at least one mobile station, the mobile station being capable of operating in a first transmission mode in which beamforming transmit diversity is not used and in a second transmission mode in which beamforming transmit diversity is used. The method comprises switching from the second transmission mode to the first transmission mode upon determining that at least one predetermined criterion related to the mobile station operation in soft handover is satisfied..
|Method and apparatus for microphone beamforming|
In accordance with an example embodiment of the present invention, an apparatus is disclosed. The apparatus includes a camera system and an optimization system.
|Method and system for feedback of antenna beamforming|
The disclosed systems and methods achieve improved communication by periodically sending sounding packets from a transmitter; feeding back, from a receiver, the change in beamforming estimation according to reception of the sounding packets; and utilizing the change in beamforming estimation to produce transmitter beamforming.. .
|Method and system for optimal beamforming in wireless networks|
Aspects of a method and system for optimal beamforming in a wireless network are presented. Aspects of the system may include one or more processors for use in a requesting communication device wherein the one or more processors may be operable to request a transmission time slot allocation.
|Method and system for pda-based ultrasound|
A method and system are disclosed for a compact, inexpensive ultrasound system using an off-the-shelf personal digital assistant (pda) device interfacing to a hand-held probe assembly through a standard digital interface. The hand-held probe assembly comprises a detachable transducer head attached to a beamforming module that performs digital beamforming.
|Geodesic lens antenna with azimuth and elevation beamforming|
An array of geodesic lens antennas (glas) comprises multiple vertical radiating slots, each formed into an annulus, which are individually controlled by feeding rings. One feeding ring is provided for each of the gla elevation elements, resulting in multiple, parallel waveguide channels that together enable elevation beam steering, thus forming a concentric stack of geodesic lenses.
|Methods and arrangements for beam refinement in a wireless network|
In some embodiments a beamforming method is disclosed. The method can include transmitting a beam having a channel defined by a maximum ratio transmission vector (mrt) and receiving a first response from a receiver, where the first response has first information such as parameters related to the transmitted beam.
|Link prediction based re-beamforming triggering algorithm for 60 ghz communication links|
A system and method are provided to trigger re-beamforming based on an algorithm that assesses various link characteristics. The algorithm is based on the ability of a 60 ghz receiving device to track and feedback a received signal strength indication (rssi) to a 60 ghz data packet transmitter.
|Multi-point opportunistic beamforming with selective beam attenuation|
A method for communication includes receiving at a receiver from a group of two or more transmitters multiple radio frequency (rf) transmission beams that alternate in time and space and include at least first and second transmission beams. The method identifies that the first transmission beam causes interference to reception of the second transmission beam.
|Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system|
The present invention is related to a method and apparatus for implementing space frequency block coding (sfbc) in an orthogonal frequency division multiplexing (ofdm) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode.
|Methods and apparatus for simplified beamforming|
Systems, methods, and devices for simplified beamforming are provided. In one aspect, a plurality of signals from a signal transmitter are received over a wireless network on one or more receive antennas.
|Apparatus and method for random access in wireless communication system using beamforming|
An apparatus implements methods for random access in a wireless communication system using beamforming. A subscriber station (ss) measures a best downlink transmission beam among downlink transmission beams transmitted from a base station (bs), and transmits random access channel (rach) information, which includes indication information indicating the best downlink transmission beam, to the bs.
|Method and apparatus for beamforming|
A method and an apparatus using beamforming in a wireless communication system are provided. The communication method includes detecting generation of uplink data to be transmitted from a mobile station (ms) to a base station (bs), and transmitting a scheduling request signal requesting uplink resource allocation in at least one channel region corresponding to uplink transmission and reception beams in an uplink resource area allocated to a scheduling request channel..
|Loudspeaker beamforming for personal audio focal points|
In one embodiment, a method comprising receiving at a microphone located at a first location audio received from plural speakers, the audio received at a first amplitude level; and responsive to moving the microphone away from the first location to a second location, causing adjustment of the audio provided by the plural speakers to target the first amplitude level at the microphone.. .
|Method for determining beamforming parameters in a wireless communication system and to a wireless communication system|
A method for determining a beamforming vector or a beamforming channel matrix in a communication system including a transmitting station and a receiving station, and a communication system. The transmitting and receiving stations include respective antenna groups and respective codebooks include a plurality of predefined beamforming vectors for the antenna group..
|Sounding and steering protocols for wireless communications|
Systems, apparatuses, and techniques relating to wireless local area network devices are described. A described technique includes transmitting a sounding packet to wireless communication devices; receiving, in response to the sounding packet, feedback packets from the wireless communication devices, wherein the feedback packets are indicative of beamforming matrices, the beamforming matrices being derived from received versions of the sounding packet; determining steering matrices based on the beamforming matrices; generating spatially steered data packets for the wireless communication devices based respectively on the steering matrices and data streams intended respectively for the wireless communication devices; and transmitting, within a frame, the spatially steered data packets to the wireless communications devices, wherein the spatially steered data packets concurrently provide the data streams respectively within the frame to the wireless communication devices via different spatial wireless channels..
|Supporting measurments and feedback for 3d mimo with data transmission optimization|
Technology is discussed for supporting wireless communication paths from an antenna array with a vertical directional component. Examples reduce training feedback for increased numbers of communication paths by only reporting on a subset of reference signals (rss) provided for various vertical beam configurations.
|Method and device for sounding signal allocation and sounding assisted beamforming|
A communication device and methods are disclosed. A transmission directionality of a plurality of antennas is controlled based on a received previously known signal transmitted from a communication terminal, when a signal to the communication terminal is transmitted.
|Real-time microphone array with robust beamformer and postfilter for speech enhancement and method of operation thereof|
A microphone array processing system and method carried out in the system. In one embodiment, the system includes: (1) a beamformer configured to perform adaptive beamforming on gain-compensated signals received from a plurality of microphones, the adaptive beamforming including dynamic range compression and diagonal loading of a sample correlation matrix based on order statistics and (2) a postfilter configured to receive an output of the beamformer and reduce noise components remaining from the beamforming..
|Using antenna pooling to enhance a mimo receiver augmented by rf beamforming|
A system having a multi-layer (multi-stream) multiple-input-multiple-output (mimo) receiving system, having a mimo baseband module and a radio distribution network (rdn) connected to the mimo receiving system. The rdn has two or more beamformers that are fed by two or more antennas, so that a total number of antennas in the system are greater than the number of branches of the mimo baseband module.
|Method of transmitting secret information at transmitting end and method of receiving secret information at receiving end, based on mimo multiplexing using antennas|
A method of transmitting secret information in a transmitting end and a method of receiving secret information at a receiving end, based on multi-input multi-output (mimo) multiplexing using antennas, are provided. The method of transmitting includes selecting one or more indices of the secret information that correspond to at least one receiving antenna among receiving antennas, and mapping the one or more indices to an information vector.
|Efficient adaptable wireless network system with agile beamforming|
Beamforming for adapting wireless signaling beams in an adaptive and agile manner is contemplated. The beamforming may be characterized by adaptively constructing beam form parameters to provide wireless signaling in a manner that maximizes efficiency and bandwidth according to device positioning relative to a responding base station..
|Communication method and apparatus using beamforming in a wireless communication system|
A communication method and an apparatus using beamforming in a wireless communication system are provided. The communication method includes determining a candidate user set including one or more mobile stations (mss), for multiple user-multiple input multiple output (mu-mimo) transmission, transmitting beam information indicating best base station (bs) transmission beams of the mss of the candidate user set to the mss of the candidate user set, receiving precoding matrix index (pmi) information indicating a pmi to be used for baseband precoding from each of the mss of the candidate user set, the pmi information being determined based on the beam information, and transmitting a signal precoded based on the pmi information to at least one ms..
|Apparatus and method for transmitting acoustic signal using human body|
An apparatus and method for transmitting an acoustic signal using a human body are disclosed. The acoustic signal transmitting apparatus includes: a pre-processor configured to perform processing for compensating for transfer distortion of an acoustic signal; a controller configured to control beamforming of the acoustic signal whose transfer distortion has been compensated for; and a plurality of acoustic devices configured to transfer the acoustic signal to a human body which the plurality of acoustic devices have contacted, through beamforming according to a control of the controller.