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Multiple Input Multiple Output

Multiple Input Multiple Output-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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NEW Reverse direction for multi-user multiple input multiple output communications
Intel Ip Corporation
January 18, 2018 - N°20180019792

This disclosure describes systems, methods, and devices related to reverse direction multi-user multiple input multiple output (mu-mimo). A device may determine a reverse direction indication to be included in a frame for transmission to one or more first devices in a mu-mimo communication. The device may cause to wirelessly transmit the frame to a first device of the one or ...
Spectrum-agile multiple input multiple output system and capacity adaptation between uplink and downlink
Board Of Regents, The University Of Texas System
January 11, 2018 - N°20180013536

A multi-input multi-output rotating frequency division duplexing transceiver in non-contiguous bands comprising an adaptive duplex filter, a controller coupled to the adaptive duplex filter, wherein an uplink band and a downlink band are rotated before each transmission sub-frame, and wherein at least two of the bands are non-contiguous, a multi-output adaptive frequency synthesizer coupled to the controller, a transmit mixer ...
Wireless communication impairments correction
Qualcomm Incorporated
December 21, 2017 - N°20170366226

Systems and methods for providing wireless communication impairment correction using non-linear iterative precoding by a transmitter device are disclosed. The transmitter may exploit the non-linear transmit indications, and perform digital non-linear multiple input multiple output (mimo) precoding of a transmit signal to improve the error vector magnitude (evm) at the intended receiver device and/or reduce the adjacent channel leakage ...
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System and selecting method for flexible allocations of antenna sub-arrays in multiple input multiple output ...
Mediatek Inc.
November 16, 2017 - N°20170331531

The invention provides a selection circuit and method of multiple input/output ports and antenna sub-arrays for reconfigurable hybrid beamforming. The selection circuit includes a plurality of digital signal processing modules, each electrically connected to a respective input/output port, a plurality of analog front end (afe) and radio frequency (rf) chains, each electrically connected to a respective digital signal ...
Electronic device and wireless communication method in electronic device
Samsung Electronics Co., Ltd.
November 16, 2017 - N°20170331529

Provided are an electronic device and a wireless communication method of an electronic device. The electronic device obtains information for mode switching when the electronic device is connected to an access point based on one of a first mode from among a multiple user multiple input multiple output (mu-mimo) mode and a single user multiple input multiple output (su-mimo) mode; ...
Enhanced multiple input multiple output preamble frame
November 09, 2017 - N°20170324599

This disclosure describes systems, methods, and devices related to an enhanced multiple input multiple output (mimo) preamble frame. A device may determine a mimo frame including a first section and a second section. The device may generate an enhanced mimo frame including at least in part a modified first section and the second section of the mimo frame. The device ...
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Target recovery in multiple input multiple output (mimo) radar system
November 02, 2017 - N°20170315221

A multiple input multiple output (mimo) radar system and method of using it for target recovery are disclosed. The mimo radar system comprises an array of distributed radiating elements configured to transmit signals towards a target scene, an array of distributed receiving elements configured to receive signals backscattered from the target scene, a sampling module configured to sample the signals ...
Multiple input multiple output radar system
November 02, 2017 - N°20170315213

The present disclosure relates to a method for cancelling spillover in a mimo radar system. The method comprises (i) transmitting and receiving a signal in a transmit-receive pair, the received signal including a spillover signal; (ii) routing a part of the transmitted signal of the transmit-receive pair to the received signal to increase the power level of the spillover signal; ...
Method and apparatus for receiving data in communication system supporting multiple input multiple output scheme
Samsung Electronics Co., Ltd.
October 26, 2017 - N°20170311331

The present disclosure relates to a pre-5th-generation (5g) or 5g communication system to be provided for supporting higher data rates beyond 4th-generation (4g) communication system such as a long term evolution (lte). A method for receiving data includes selecting one of reception schemes, and receiving data based on the selected reception scheme, wherein the reception schemes includes a scheme ...
Multi-user multiple input multiple output communications in wireless local area networks and wireless transmit and ...
Interdigital Patent Holdings, Inc.
October 12, 2017 - N°20170294953

Wtrus, access points (aps) and methods thereon are disclosed. A method on a wtru may include receiving a message from an ap that comprises a beamformee capability element; sending a second message to the ap that comprises a beamformer capability element; and receiving, from the ap, a third message in response to the second message that indicates a group to ...
Methods and apparatus for multiplexing reference signals for multiple input multiple output(mimo) layers
Qualcomm Incorporated
October 05, 2017 - N°20170288837

Methods and apparatus for multiplexing reference signals for multiple input multiple output (mimo) layers are provided. Resources for demodulation reference signals (dmrs) corresponding to each of two or more data streams are assigned, wherein the resources assigned to each of the data streams are staggered in frequency and span two or more ofdm (orthogonal frequency divisional multiplexing) symbols. The dmrs ...
Transmission apparatus, transmission method, and wireless communication system for orthogonal cover code (occ) generation and ...
Fujitsu Limited
October 05, 2017 - N°20170288803

A base station which performs multiple input multiple output (mimo) transmission. A processor configured to generate reference signals by spreading with four groups of orthogonal code sequences, each group of orthogonal code sequences including four orthogonal sequences, wherein the orthogonal code sequences correspond to transmission layers and each of the orthogonal code sequences has a length of four, and a ...
Method and apparatus for channel sounding for a mu-mimo wireless communication network
Cambium Networks Limited
October 05, 2017 - N°20170288746

In a multi user multiple input multiple output mu-mimo wireless communication network comprising an access point and subscriber modules, a method of channel sounding comprises forming a respective mu-mimo beam from the access point to each subscriber module of a first sounding group of subscriber modules by applying a beamforming weightset to a weighting matrix, the beamforming weightset determined based ...
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Point-to-multipoint microwave communication
Skyriver Communications, Inc.
September 21, 2017 - N°20170272230

A microwave communication system may include subscriber stations in communication with a base station. The stations may include time duplex circuitry normally found in wireless local area networks (wlans). Signals normally routed through antennas associated with such circuitry instead are routed through circuitry to perform frequency conversion to and from microwave communications frequencies, for communications over microwave links between the ...
System and method for multiple input multiple output (mimo) detection with soft slicer
Samsung Electronics Co., Ltd.
September 14, 2017 - N°20170264391

A system, method and device for wireless communication is provided. The method includes receiving, by a receiver, data from a transmitter, storing the data in the receiver, and determining, by the receiver, a probability of a bit stored in the data and a probability of a symbol based on the probability of the bit, wherein determining the probability of the ...
Multiple input multiple output regulator controller system
Qualcomm Incorporated
September 07, 2017 - N°20170255214

Circuit techniques control multiple regulator circuits. Regulator circuits are configured to time share voltage control circuitry. The voltage control circuitry may include multiple sets of switches to selectively couple a voltage control circuit with a selected voltage regulation loop of one of the regulators.
Method and apparatus for transmitting/receiving channels in mobile communication system supporting massive mimo
Samsung Electronics Co., Ltd.
August 24, 2017 - N°20170245251

A channel transmission/reception method and an apparatus for transmitting/receiving channels between a base station and a mobile terminal efficiently in a mobile communication supporting massive multiple input multiple output (mimo) transmission are provided. The method includes determining a resource to which a demodulation reference signal (dmrs) addressed to a terminal is mapped within a resource block, the dmrs ...
Method and apparatus for operating a power save mode in a wireless lan system
Lg Electronics Inc.
August 10, 2017 - N°20170230909

A communication method that includes transmitting a power save multi-poll (psmp) frame containing a power save mode (psm) of a non-access point (ap) station (sta) to a first station and to a second station which are paired with an ap on the basis of multiple input multiple output (mimo) technology. Information on the psm indicates the point in time of ...
Communication method and apparatus using beamforming in a wireless communication system
Samsung Electronics Co., Ltd.
August 10, 2017 - N°20170230095

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 ...
Method and apparatus for transmitting management information frame in wireless local area network system
Lg Electronics Inc.
August 03, 2017 - N°20170223612

A method for reporting load information, performed by an access point (ap), in a wireless local area network system, the method includes determining first utilization information for a first channel having a bandwidth of 40 mhz; and transmitting basic service set (bss) load information, the bss load information including a multi user (mu) multiple input multiple output (mimo) capable station count ...
Method and apparatus of iterative channel tracking for mimo-ofdm system
Lilee Systems, Ltd.
August 03, 2017 - N°20170222841

Methods and systems for channel estimation using iterative channel tracking algorithm, in a communication system combined multiple input multiple output (mimo) technology with orthogonal frequency division multiplexing (ofdm), are disclose. The initial channel estimation of a data packet uses the first preamble inserted in front of the ofdm blocks. After demodulating subsequent one or more ofdm blocks, iterative channel tracking ...
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