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Precoding Matrix

Precoding Matrix-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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System and method for hierarchal beamforming and rank adaptation for hybrid antenna architecture
Futurewei Technologies, Inc.
July 12, 2018 - N°20180198511

An embodiment method for beam-related information and channel state information feedback includes receiving first analog beamformed reference signals; transmitting a first report indicating a set of selected analog beamformed reference signals and a transmission rank that jointly maximize a first performance criterion for subsequent transmissions by a transmitter that transmitted the first analog beamformed reference signals; receiving second analog beamformed ...
Codebook-based signal transmission/reception method in multi-antenna wireless communication system, and device for same
Lg Electronics Inc.
July 12, 2018 - N°20180198499

Disclosed are a codebook-based signal transmission and reception method in a multi-antenna wireless communication system and an apparatus therefor. Specifically, a method for transmitting or receiving a signal on the basis of a codebook by a terminal in a 2-dimensional multi-antenna wireless communication system comprises the steps of: receiving a channel state information reference signal (csi-rs) through a multi-antenna port ...
Method and apparatus forcsi reporting in elevation beamforming and fd-mimo
Qualcomm Incorporated
July 12, 2018 - N°20180198497

Methods, systems, and devices are described for wireless communication. The ue may identify, at a user equipment (ue), a codebook type indicator (cti) that indicates a codebook among a set of codebooks, such that the codebook may be associated with a two-dimensional antenna port structure of a base station, select a precoding matrix indicator (pmi) based on the cti, and ...
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Uplink mimo codebook for advanced wireless communication systems
Samsung Electronics Co., Ltd.
June 28, 2018 - N°20180183503

Methods and apparatuses for a codebook for uplink mimo in advanced wireless communication systems. A user equipment (ue) includes a processor and a transceiver operably connected to the processor.
Phase-rotation of svd-based precoding matrices
Intel Ip Corporation
June 21, 2018 - N°20180175918

A wireless device configured to process multiple-input multiple-output (mimo) data streams. The wireless device includes a singular value decompostion (svd) engine configured to diagonalize a channel matrix into a precoding matrix; an svd rotation engine configured to phase-rotate the precoding matrix, such that the channel matrix is partially de-diagnalized; and a transmitter configured to transmit a data packet corresponding to ...
Uplink transmit diversity and precoding
Qualcomm Incorporated
June 14, 2018 - N°20180167252

A configurable new radio (nr) uplink (ul) transmission may use transmit diversity. A user equipment (ue) may identify an uplink transmission of at least one stream as using one of cyclic prefix orthogonal frequency division multiplexing or discrete fourier transform spread orthogonal frequency division multiplexing.
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China Academy Of Telecommunications Technology
June 14, 2018 - N°20180167124

Disclosed are a channel state information feedback and a control method and device therefor, which are used for realizing large-scale csi feedback under an antenna system, wherein a ue may only need to feedback some pieces of pmi information, so that the complexity of the ue feeding back csi is reduced, and the flexibility for a network side to control ...
Codebook configuration method and user equipment
Huawei Technologies Co., Ltd.
June 14, 2018 - N°20180167117

The present invention provides a codebook configuration method and user equipment. The ue receives a reference signal that is of an antenna whose quantity of antenna ports is x and that is sent by a base station and configuration information of a codebook subset restriction for the quantity x of antenna ports, where the configuration information of the codebook subset ...
Method and apparatus for transmitting signal using multiple radio unit
Electronics And Telecommunications Research Institute
June 07, 2018 - N°20180159604

A method and an apparatus for transmitting a signal by using a plurality of radio units (rus) to a user equipment (ue). The apparatus is configured to: determine an ru set including at least two rus of the plurality of the rus based on a feedback regarding a received strength of a transmission beam formed by the plurality of the ...
Precoding with a codebook for a wireless system
Nec Corporation
May 31, 2018 - N°20180152230

A base station used in a wireless communications system with multiple transmission ranks is disclosed. The base station comprises a memory to store a codebook for a transmission rank, a beamforming controller to precode data with a precoding matrix selected from the codebook, and a transmitter to transmit the precoded data to a user equipment, wherein the precoding matrix is ...
Multi-hypothesis channel quality indicator feedback
Qualcomm Incorporated
May 24, 2018 - N°20180145738

A method for providing multi-hypothesis channel quality indicator (mh-cqi) feedback is described. Hypotheses corresponding to rank indicator (ri) and precoding matrix indicator (pmi) assumptions associated with a dominant interferer are selected.
User terminal, radio base station and radio communication method
Ntt Docomo, Inc.
May 17, 2018 - N°20180139746

To reduce a reception processing load, while obtaining gain of non-orthogonal multiple access (noma), in the case of transmitting a downlink signal using the noma scheme, a user terminal according to one aspect of the present invention is provided with a transmission section that transmits a plurality of precoding matrix indicators (pmis) to a radio base station, and a reception ...
Power allocation and precoding matrix computation method in a wireless communication system
Rf Dsp Inc.
May 17, 2018 - N°20180139703

This invention presents methods for power allocation for each data stream on each transmitting antennas in mu-mimo wireless communication systems comprising the bs computing the temporary beamforming matrix, constructing special matrices and vectors with the maximum transmitting power on each antenna, the allocated power to each data stream, the channel quality of each data stream, and the amplitude of each ...
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Channel state information (csi) feedback and subsampling
Nec Corporation
May 17, 2018 - N°20180138955

A method implemented in a base station used in a wireless communications system is disclosed. The method comprises receiving, from a user equipment, rank indication (ri), a first precoding matrix indicator (pmi), and a second pmi (codebook index i2), wherein values 0-15 are assigned to the second pmi ipmi2 for ri=1 and values 0-3 are assigned to the second pmi ...
Receiving method and receiving apparatus
Sun Patent Trust
May 17, 2018 - N°20180138953

All data symbols used in data transmission of a modulated signal are precoded by switching between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol along the frequency axis and the time axis all differ. A modulated signal with such ...
Transmission method, transmitter apparatus, reception method and receiver apparatus
Sun Patent Trust
May 10, 2018 - N°20180131551

Transmission quality is improved in an environment in which direct waves dominate in a transmission method for transmitting a plurality of modulated signals from a plurality of antennas at the same time. All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data ...
Method, apparatus and communication unit
Intel Deutschland Gmbh
May 10, 2018 - N°20180131432

A method, an apparatus and a communication unit for generating precoding feedback information in a multiple frequency radio transmission system are disclosed. A rank for precoding matrices, wherein the rank is constant over the multiple frequencies, is selected and a plurality of precoding matrices having the selected rank are selected.
Beamforming in antenna systems
Facebook, Inc.
May 10, 2018 - N°20180131423

Apparatuses, methods, and systems for beamforming in antenna systems are disclosed. A method includes determining an unconstrained analog precoding matrix (frf,uc), wherein the unconstrained analog precoding matrix (frf,uc) is determined based on m dominant eigenvectors of the sum of spatial channel covariance matrices of k users, and wherein k indicates a number of users communicating with a base ...
Uplink mimo design
Qualcomm Incorporated
May 10, 2018 - N°20180131418

Aspects of the disclosure relate to multiple-input multiple-output (mimo) signals, and the determination of a precoding matrix for configuring the mimo signals. An uplink traffic channel may be configured utilizing orthogonal frequency division multiplexing (ofdm) waveform.
Cooperative communication method and system
Industrial Technology Research Institute
May 03, 2018 - N°20180123753

A cooperative communication method and a cooperative communication system are provided for the transmission between multiple transmission devices and their corresponding receiving devices. In a first phase of a communication period, at least one of the multiple transmission devices performs a first phase precoding on data using a multicasting precoding matrix so as to transmit the data precoded by the ...
Method and apparatus for feeding back channel state information, user pairing method and apparatus, data ...
Fujitsu Limited
May 03, 2018 - N°20180123669

Embodiments of this disclosure provide a method and apparatus for feeding back channel state information, a user pairing method and apparatus, a data transmitting method and apparatus and a system. In one embodiment, the apparatus for feeding back channel state information includes: a feedback unit configured to feed back channel state information to an enb, the channel state information including ...
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